WGA Transport Capability Statement

Transport Capability Statement

Contents

OUR COMPANY— DEFINING TOMORROW. .................................................................................................. 5 OUR EXPERIENCE— TRANSPORT . .......................................................................................................... 7 ROADS............................................................................................................................................. 8 BRIDGES........................................................................................................................................... 14 RAIL ............................................................................................................................................. 18 TRAFFIC MODELLING............................................................................................................................ 22 INDEPENDENT DESIGN VERIFICATION AND INDEPENDENT DESIGN CERTIFICATION.................................................... 26 PAVEMENTS...................................................................................................................................... 30 LIGHTING AND TRAFFIC SIGNALS............................................................................................................. 34 STREETSCAPES.................................................................................................................................. 38

TRANSPORT CAPABILITY STATEMENT

Our Company—Defining tomorrow

Our Company— Defining tomorrow

We are WGA (Wallbridge Gilbert Aztec), a multi-disciplinary, award-winning engineering and project management consultancy with deep roots in Australia and New Zealand. Our technical excellence is found in our ability to be different, to be solution-focused and to look beyond the status quo, which enables our clients to chase their dreams of building better futures. Continuous learning through our experience proves that facing up to complexities often leads to the best, most exciting solutions. A company like no other—we are owned by employees, loved by our long-term clients and are guided by well-established connections in our communities.

PURPOSE-DRIVEN Our team of 700+ employees spanning Australia and New Zealand apply smart thinking to create a future-focused and sustainable built environment.

We want to make projects, and life, easy for everyone. We partner with our clients and will always be there when and where you need us. We are passionate about what we do, we strive to solve complex problems and deliver client driven outcomes by thinking outside the box.

Darwin

11 OFFICES ACROSS ANZ 700+ EMPLOYEES 27,000+ PROJECTS DELIVERED TO DATE 10,200+ CLIENTS

Brisbane

Perth

Whyalla

Newcastle

Auckland

Melbourne

Adelaide

Hamilton

Hobart

Christchurch

TRANSPORT CAPABILITY STATEMENT

OUR EXPERIENCE

Our Experience— Transport

Bridging communities and fuelling our economies – we are leading the charge in the Transport sector.

As a trusted partner for Australia's major infrastructure projects, we provide comprehensive solutions that are not just cost-effective, but sustainable, and innovative.

Spanning project inception to detailed engineering during the design phase, our smart minds integrate structural, geotechnical, electrical, and civil engineering capabilities to deliver exceptional results from project inception to completion. Traffic and transport planning: Master planning, traffic modelling, impact assessments, and optimisation. Infrastructure design: Roads, rail, mining haulage roads, urban developments, and major freeway networks. Civil engineering: Structures, geotechnical, electrical, and ITS solutions.

Backed by a proven track record and appointments to key road authority panels, we understand the challenges our community and world face.

Our advanced modelling capabilities, using AIMSUN, LEGION, TRANSYT, Domino, and VISSIM, ensure accurate and reliable simulations of traffic networks giving you visibility of your project at all times.

As a trusted partner for delivering effective and sustainable transportation solutions, we will keep Australia moving forward.

TRANSPORT CAPABILITY STATEMENT

Our Experience—Transport

Roads Our expertise lies in designing road infrastructure that prioritises safety, efficiency, and innovation. Collaborating with clients, we create transportation solutions tailored to the specific needs of vehicles, cyclists, and pedestrians. By considering factors like topography, traffic volume, and environmental impacts, our road designs support economic growth, facilitate smooth movement, and enhance the quality of life for communities. Whether it’s a bustling highway or a quiet rural road, our goal is to create safe and accessible infrastructure that benefits everyone.

Torrens Road to River Torrens— $801m CIVIL, GEOTECHNICAL, LIGHTING, PAVEMENTS, STORMWATER, STRUCTURAL, TRAFFIC AND WATER SENSITIVE URBAN DESIGN WGA was part of the consortium selected to deliver the $801 million South Road upgrade from the Torrens Road to River Torrens (T2T) in Adelaide. The project included a 4.0km non-stop section of roadway incorporating a lowered road section, a 3km section of lowered non-stop motorway, parallel surface at-grade roads along the length of the lowered motorway to connect most local roads and arterial roads, an overpass of the Outer Harbor railway line, intersection upgrades, improved cycling and pedestrian facilities, landscaping and noise barriers. The project also included the design of a complex series of linkages and service roads to provide access to existing surface level roads and businesses.

Majors Road Interchange— $120m CIVIL, ELECTRICAL, HYDROLOGY, PAVEMENTS, STORMWATER, STRUCTURAL, TEMPORARY WORKS, TRAFFIC AND WATER SENSITIVE URBAN DESIGN Majors Road carries approximately 13,200 vehicles per day and is an important arterial road, providing a key connection between Lonsdale Road and Main South Road. WGA undertook the detailed design of new entry and exit ramps to create a full interchange with the Southern Expressway, and the associated duplication of Majors Road through to Lonsdale Road. Working with Acciona, WGA's scope as the lead designer included road alignment, drainage, pavements, earthworks, utilities, bridge structures, barriers, ITS structures, traffic modelling, traffic signals, road lighting and temporary works. During the tender design WGA identified several key improvements to the reference design which were adopted as part of the final design arrangement. This included an alternative alignment of the Patrick Jonker Veloway which eliminated two ramp underpass crossings, significantly shortening the southbound entry and exit ramps and resulting in a large reduction in earthworks and pavements. As an additional design value add, the entry ramps have been designed to accommodate future ramp metering with no change to the ramp nose location and minimal impact to the as-built infrastructure.

North-South Corridor - Torrens to Darlington Reference Design— $15b CIVIL, HYDROGEOLOGY, LIGHTING, STRUCTURAL, TRAFFIC AND WATER SENSITIVE URBAN DESIGN

As a preferred major route for Adelaide's north and south bound traffic, the North-South Corridor improves traffic flow, supporting large volume of traffic around the CBD

The non-stop corridor runs from Gawler to Old Noarlunga, an impressive distance of 78km. WGA, in partnership with WSP and GHD, formed the North-South Complete Joint Venture to take on the reference design for the final - and most complex - 10.5km section of the corridor. WGA's staff provided many roles within the integrated design team, including leading the traffic modelling, which was critical in developing the overall solution and network connectivity. This involved the assessment of other significant improvements in the Adelaide network that will also be required to facilitate the movement of traffic to the North-South Corridor. WGA staff provided project management, and document control services together with leading the bridge designs retention structures, pavements, hydrogeological modelling, and geographic information systems (GIS). In addition, WGA was the lead modellers for the highly complex road geometric design.

TRANSPORT CAPABILITY STATEMENT

Our Experience—Transport

Image Credit: Victoria's Big Build

Karel Ave—$25m CIVIL, PAVEMENTS, STORMWATER, STRUCTURAL AND WATER SENSITIVE URBAN DESIGN Karel Avenue is a key arterial link between the Jandakot Airport precinct and surrounding residential area, to Roe Highway and north to Farrington Road. Pre-development, Karel Avenue was a single lane dual carriageway between Berrigan Drive and Farrington Road and a dumbbell grade separated interchange with Roe Highway. WGA was engaged by Georgiou Group on behalf of Main Roads Western Australia to upgrade Karel Avenue to a two-lane dual carriageway from Farrington Road to Berrigan Drive. This involved designing an upgraded dog- bone interchange over Roe Highway which necessitated the widening of Bridge 1857 and a minor extension to the shared path underpass. A new precast concrete bridge over the Freight Railway line and a dual lane roundabout at Berrigan Drive was included in the works. WGA completed the civil design for geometry, road safety barriers, signs and pavement markings, stormwater drainage and pavements. Key constraints impacting the design included: ● Constrained environmental clearance envelope (black cockatoo nesting area). ● No option for offline traffic diversions. ● Widening of existing bridge infrastructure whilst maintaining traffic at all times.

Managed Motorways— $14m CIVIL, GEOTECHNICAL, INTELLIGENT TRANSPORT SYSTEMS, LIGHTING, PAVEMENTS, STORMWATER, STRUCTURAL, TRAFFIC AND WATER SENSITIVE URBAN DESIGN Working with contractor BMD and design partner SAGE Automation, WGA helped to deliver upgrades to the Stirling to Crafers section of Adelaide’s South Eastern Freeway. The project improved safety and travel times along the freeway through the installation of ITS and managed motorway systems, and the conversion of the existing emergency lanes into a third travel lane in each direction. Improvements to the Stirling and Crafers interchanges further addresses congestion and safety issues that have plagued this section of the freeway for 20-years, eliminating a known bottleneck.

Golf Links Road— $39m CIVIL, ELECTRICAL, GEOTECHNICAL, PAVEMENTS, STORMWATER, SUSTAINABILITY, TRAFFIC AND WATER SENSITIVE URBAN DESIGN The Golf Links Road Upgrade focused on improving the safety of the road and intersections. The works comprised road surface improvements, upgrades to a six-way roundabout, two cross intersections, installation of traffic lights, a pedestrian crossing near a school, construction of footpath, installing safety barriers, and upgrades to the drainage network. Engaged by MACA as their lead design consultants for the project, the WGA team worked collaboratively with MACA and Major Road Projects Victoria. WGA optimised the road geometry to achieve balanced cut and fill on overland flow paths, eliminating the need for any flood modelling or flood mitigation works. The narrow road corridor was highly congested with existing services however, our design team was able to avoid the costly relocation of a large, old water main through smart road geometry and pavement design. This enabled the road to be constructed over the water main. Working with MACA the team implemented a construction staging sequence that minimised impact to the community.

Hall Road East Upgrade— $42m CIVIL, ELECTRICAL, GEOTECHNICAL, PAVEMENTS, STORMWATER, SUSTAINABILITY, TRAFFIC AND WATER SENSITIVE URBAN DESIGN The Hall Road East Upgrade forms part of the wider Hall Road Upgrade which comprised the addition of an extra lane in each direction between McCormicks Road and Western Port Highway, upgrade to five intersections to add capacity and improve traffic flow, new walking and cycling paths, and installation of centre median and kerb-side safety barriers. WGA provided the design for the upgrade of the existing Hall Road, Evans Road and Cranbourne-Frankston Road intersections into a singled signalised intersection. WGA's scope included providing an alternative pavement design to allow retention of the existing drainage which was instrumental in the mitigation of the post-development aflux. WGA also undertook the detailed design of the road, traffic signals, pavements, major signage, and drains including a retention basin.

TRANSPORT CAPABILITY STATEMENT

Our Experience—Transport

Pakenham Road Interchange— $44m CIVIL, PAVEMENTS, STORMWATER, STRUCTURAL, TRAFFIC AND WATER SENSITIVE URBAN DESIGN

WGA undertook the detailed design of all civil roads, drainage & WSUD, pavement design, signs and pavement markings, traffic signalling design and structural design for the major improvements to McGregor road. This included:

● Adding an extra lane on McGregor Road between the Princes Freeway and Webster Way ● Upgrading the McGregor Road, Henry Road and Webster Way intersection ● Widening of the existing freeway entry and exit ramps including an upgrade of the exit ramp roundabout, ● Design of new ramp overhead gantry and metering signals on the inbound entry ramp.

WGA collaborated closely with Major Road Projects Victoria, Bild and other stakeholders to achieve a safe, optimal, and cost-effective design solution while navigating around numerous existing utility services in the brownfield environment.

WGA pursued innovative design engineering, challenging norms and reducing the need for road safety barriers and strip footings across the project, minimising the extent of overhead gantry protection that utilised concrete barriers and associated piles and footings, and subsequently providing significant cost savings.

TRANSPORT CAPABILITY STATEMENT

Our Experience—Transport

Bridges We deliver comprehensive bridge design services across Australia, ensuring safe, functional, and cost-effective structures for any crossing—creeks, rivers, roads, freeways, and rail lines. Our expertise encompasses the entire bridge life cycle, from inspecting, maintaining, and strengthening existing and historical bridges, to planning, feasibility studies, concept design, and detailed design for new builds. Specialising in temporary works design, we consider construction methodologies from the earliest project stages. This holistic approach enables us to simplify complex challenges, collaborating closely with clients to deliver enduring infrastructure that serves communities for generations.

Karel Avenue Road Bridge over Freight Rail— $25m CIVIL AND STRUCTURAL Completed in 2021, WGA provided the detailed design for the widening of Karel Avenue to provide two lanes in each direction at the interchange with the Roe Highway. The project included the duplication of Karel Avenue bridge over the Roe Highway, a wider and longer bridge no. 1595A for Karel Avenue over the Thornlie to Cockburn rail line and a shared path underpass extension. Bridge no.1595A adopted a single span solution with no piers, which provides flexibility for the location of future rail lines and constitutes a safer option with regards to rail traffic. The structural solution chosen for the north bridge abutment is a soldier pile wall with a deadman anchor system. The wall comprises 900 mm diameter continuous flight auger (CFA) piles. A sprayed concrete wall is provided in between and in front of the piles at the north abutment. This wall provides soil retaining function and constitutes the facing of the abutment. The duplication of the existing bridge no. 1482 with the new bridge no. 1857 is achieved with a two-span structure of approximately 58 metres between abutments with a one-way cross fall. The new bridge accommodates two 3.5m wide traffic lanes and a 1.5m wide shoulder.

Majors Road Interchange Bridge Widening— $120m CIVIL, ELECTRICAL, HYDROGEOLOGY, PAVEMENTS, STORMWATER, STRUCTURAL, TEMPORARY WORKS, TRAFFIC AND WATER SENSITIVE URBAN DESIGN Majors Road carries approximately 13,200 vehicles per day and is an important arterial road providing a key connection between Lonsdale Road and Main South Road. Working with Acciona, WGA's scope as the lead designer included road alignment, drainage, pavements, earthworks, utilities, bridge structures, barriers, ITS structures, traffic modelling, traffic signals, road lighting and temporary works. A key part of the project was the widening of the existing Majors Road bridge. The two-lane composite steel-girder bridge was upgraded and modified to accommodate two lanes of traffic in each direction with dedicated right turns for access to the new interchange entry ramps. The project is all about improving access to the Southern Expressway and reducing travel time to and from the city.

O-Bahn Tunnel & Torrens Pedestrian Bridge— $160m CIVIL, DIGITAL, GEOTECHNICAL, HEAVY LIFTING, STRUCTURAL AND TEMPORARY WORKS

Part of the South Australian Government’s investment in building a stronger public transport network, the O-Bahn City Access Project included the creation of centrally aligned priority bus lanes along Hackney Road, and a dedicated 675m bus tunnel providing quicker, more reliable access for O-Bahn buses into the city. WGA led the structural design including: ● Geometric design for the tunnel, ramps and portal areas. ● Sheet pile walls, base slab and guideways constructed beneath the water table. ● Precast plank roof of the tunnel in Hackney Road, Dequetteville Terrace, Rundle Road and the Parklands.

● New section of First Creek Culvert. ● Tunnel drainage and pump stations.

WGA was the structural designer for the 78m long shared use path bridge across the Torrens River, located 15m downstream from the existing Hackney Road Bridge. The bridge comprises three continuous spans of 26m and was designed with integral abutments and piers to eliminate bearings and movement joints, reducing maintenance requirements.

The bridge pier comprises a V-shaped pier to match the existing which is supported on a large pad footing.

TRANSPORT CAPABILITY STATEMENT

Our Experience—Transport

Geelong Road Bridge Rehabilitation—$5m CIVIL, GEOTECHNICAL AND STRUCTURAL

Mount Emu Creek Bridge Rehabilitation—$2m CIVIL AND STRUCTURAL

Calder River and Ford River Bridge Inspections and Upgrades— $8m CIVIL, GEOTECHNICAL, STRUCTURAL AND TRAFFIC WGA undertook Level 2 assessments of two 11.5m regional bridges in Cape Otway on the Great Ocean Road, which were nearing the end of their design lives. In addition WGA carried out a road safety audit for the roads leading to and after the bridges. Both bridges' timber deck and girders were found to have insufficient capacity to support the bridge’s 75% SM1600 loading, an Australian Standard for vehicle masses up to 120t. The superstructure was inadequate to resist braking loads, and had excessive pile settlement under vertical loading. A full replacement was recommended for both bridges.

Spout Creek Bridge— $10m CIVIL, GEOTECHNICAL AND STRUCTURAL

WGA was engaged to undertake detailed design of the Geelong Road Bridge over Kororoit Creek, a high priority bridge upgrade. The scope included assessment of the bridge inspection report, and development of a design solution for deck strengthening, barrier upgrades and bearing replacement works, all of which had to consider construction staging under live traffic environments, other access constraints and whole of life costs. The complexities came from the required change to bridge articulation following the removal of the stepped joints. This in turn required the piers and their foundations to be assessed for the new movements they will experience. The bearing reset required a complete understanding of the current bridge position and what the change in articulation will mean to them. Our performance on the project and commitment to client engagement led the client to invite WGA to tender for additional road works projects.

WGA provided a load assessment to 75% SM1600 loading for Mount Emu Creek bridge which crosses over the creek on Princes Highway in Panmure. The loading equates to vehicles of 120t, and required structural strengthening to achieve. WGA’s scope included design of the roads, bridge structure and road safety barriers, which was achieved by assessing the existing bridge’s condition to identify areas requiring rehabilitation and improvement. The design prioritised safety to construct and traffic staging, as the road could not be closed during construction. The result is a robust, sustainable design that caters for future traffic loading and safe pedestrian and cyclist movements.

Spout Creek is a two-lane 15m wide road bridge on the Great Ocean Road, originally constructed in 1953 and widened in 1972. Regional Roads Victoria engaged WGA to undertake condition investigations of the bridge, then develop design and construction options to increase the bridge load rating to meet 75% compliance with the SM1600 traffic loading standard. WGA completed load bearing assessments using historical condition assessment reports and drawings. Several rehabilitation options were developed which were then considered for constructibility and developed in partnership with the client and contractor. The key challenge was ensuring the proposed design allowed this popular tourist route to remain open during construction. Once a shortlist of rehabilitation options was reached, WGA undertook geotechnical investigations to assess the abutment and wingwall foundation bearing capacity, abutment and wingwall backfill strength parameters, approach barrier foundation parameters including lateral load and vertical load assessments, and shear and pull-out capacities of the existing rock anchor dowel bars. WGA also completed an Australian Road Research Board (ARRB) Level 2 Condition Assessment of the existing bridge structure.

Birkenhead Bridge Re-decking— $3.73m PAVEMENTS AND STRUCTURAL

The Birkenhead Bridge over the Port River is an iconic piece of infrastructure and a State Heritage item. One of only a handful of bascule (opening) bridges in Australia, it has provided a critical connection between Port Adelaide and Birkenhead since opening in 1940, carrying approximately 15,000 vehicles a day. Engaged by the Department for Infrastructure and Transport, WGA undertook the design of a new lightweight FRP roadway decking for the bascule spans of the bridge, a first for bascule bridges in Australia. The design incorporated innovative wearing surfaces fused to the FRP during the manufacture process. The decking was subject to rigorous testing, ensuring its integrity during bridge openings in hot weather events.

TRANSPORT CAPABILITY STATEMENT

Our Experience—Transport

Rail We know how important it is to have a well-designed rail system - it keeps our transport network running smoothly, connects regions, reduces traffic jams, and cuts down on carbon emissions. Crucial in creating a safe and reliable design solution, our expertise in route assessment, track design, bulk earthworks design, rail bridges, structural analysis, stormwater management and drainage design will ensuring your rail project achieves the project goals, making life better for everyone.

Raes Road Bridge over Rail— $32m CIVIL, STRUCTURAL AND TEMPORARY WORKS

Marion Station Pedestrian Open Underpass—$3.7m CIVIL, GEOTECHNICAL, RAIL AND STRUCTURAL WGA prepared the concept design for an 'Open Pedestrian Underpass' at the Marion Railway Station to replace an ageing and non-compliant overpass structure. The design aimed to provide an open style underpass designed using Crime Prevention Through Environmental Design (CPTED) principles to provide a safe thoroughfare for train passenger and pedestrians. The design included Earthing and Bonding of the entire infrastructure within the rail corridor, extensive CCTV cameras and lighting, vandal proof 42-inch LCD display screens at the base of each ramp which provide any user with a full view of all areas of the underpass on the LCD TV screen. The structural design including the detailing of all the fencing, balustrades and handrails were documented in 3D using REVIT software.

Aimed to facilitate access from Stockwell Drive to Kimberley Estate, WGA designed then new bridge and associated temporary works over the Bendigo V-Line railway track. WGA provided comprehensive structural design of the bridge's superstructure and substructure, on/ off structure barriers, retaining walls, approach wingwalls, and anti-throw screens. The complexity of the site demanded an integral bridge design without expansion joints, leading to intricate substructure solutions eliminating the need for specific inspection or maintenance within the rail corridor. We addressed concerns of future V-Line tracks within the cutting by foreseeing requirements for rockface spill retention and proposing slope stabilisation methodologies like soil nails or rock bolts. Notably, our design allowed the utility placement alongside the bridge for streamlined maintenance access without track closures.

Torrens Road to River Torrens— $801m CIVIL, ELECTRICAL, GEOTECHNICAL, HEAVY LIFTING, HYDROGEOLOGY, STRUCTURAL, TEMPORARY WORKS AND TRAFFIC WGA completed active rail crossings at Chief Street and Coglan Street in Brompton, SA and Queen Street in Croydon, SA. The team also contributed to the design of the Outer Harbor Rail bridge, which was constructed in a constrained site along the existing rail alignment. The design of the rail bridge embankments used a combination of precast retaining walls and in situ bored piles able to be installed during low-speed operating conditions. A critical innovation, this ensured completion of the rail embankment and rail bridge within a 20-day track closure window. Careful consideration to the compaction regime for earth fill behind the retaining walls was required to balance the competing requirements to minimising precast wall size and hasten construction. WGA designed the temporary works and undertook the heavy lifting design required for the safe installation of the superstructure of the new rail bridge.

Goodwood Junction Rail Grade Separation—$45m CIVIL, GEOTECHNICAL, STRUCTURAL AND TEMPORARY WORKS The Rail Grade Separation project removed a major bottleneck in the Adelaide Rail Network by separating the Australian Rail Track Corporation freight and Belair Passenger Rail line from the twin track Seaford Passenger Rail line, removing the existing at grade conflict between the freight and passenger lines. Through the design and construction of a 550m underpass separating the freight and passenger rail lines, the project facilitated the removal of a road level crossing at Leader Street, and a rail diamond at Goodwood. WGA delivered hydraulic modelling and engineering design for the diversion of Brownhill Creek culvert around the rail underpass. In addition, the team led the geotechnical design of the revetment walls, and detailed design of all temporary works, including structures, pavements, and drainage.

Oaklands Level Crossing Removal - Concept Design— $110m CIVIL, STRUCTURAL AND TRAFFIC WGA prepared the concept planning for the Oaklands Rail Grade Separation project. The project removed the level crossing by lowering the Seaford rail line underneath Morphett Road, including a lowered Oaklands Railway Station. WGA undertook the traffic modelling for the project to support the business case, and prepared concept road, rail, pedestrian crossings, rail station concept and bridge structure designs for the project.

TRANSPORT CAPABILITY STATEMENT

Our Experience—Transport

Torrens Rail Junction Concept Design— $150m CIVIL AND STRUCTURAL

In collaboration with the Department for Infrastructure and Transport, WGA prepared the concept planning for the Torrens Rail Grade Separation project.

The project involved the grade separation of the Outer Harbour railway line under Park Terrace, and the grade separation of the Gawler Railway line from the Australian Rail Track Corporation line.

Services provided by WGA included, road design, rail track design and concept structural engineering.

ARTC Track and Civil Independent Verification— CIVIL, RAIL AND STRUCTURAL

WGA has performed Independent Track, Civil, and Structural reviews to the Precision Group for over 25 regional track upgrade projects undertaken all around Australia for Australian Rail Track Corporation (ARTC). These projects involved an independent assessment of the designs produced by Precision Group against the relevant ARTC Design Standards and the preparation of an Independent Verification Certificate to ARTC.

Exeter and Menangle - Activated Mazes for ARTC—$2m CIVIL, RAIL, STORMWATER AND WATER SENSITIVE URBAN DESIGN WGA working with JMDR prepared the detailed design and documentation for two activated pedestrian crossings in Exeter and Menangle in New South Wales for the Australian Rail Track Corporation.

The new crossings replaced old, non Disability Discrimination Act compliant crossings with new activated mazes with automated gates.

TRANSPORT CAPABILITY STATEMENT

Our Experience—Transport

Traffic Modelling

Designing efficient transportation systems requires a deep understanding of traffic dynamics, modelling, simulation and vehicle analysis – don’t worry, we have you covered.

By predicting traffic flow patterns, we help planners optimise new road designs, enhance intersections, and implement effective traffic management strategies. This data-driven approach ensures that our transportation infrastructure can accommodate future demands and provide a smooth, safe driving experience for our communities.

Thompsons Road, Geelong— $4.5m ELECTRICAL AND TRAFFIC

Adelaide Airport Landside Precinct—$75m CIVIL, STRUCTURAL AND TRAFFIC

Thompson Road is a 5km arterial road used by over 16,000 vehicles a day. It serves a growing commercial precinct and features two residential zones and an important bus corridor. The project to upgrade the road was a Victoria State Government initiative to improve safety along the corridor. Victoria’s Department of Transport engaged WGA to undertake traffic signal design for several intersection upgrades along Thompson Road in the Geelong suburb of Corio. Works included five traffic signal remodels and one new signalised pedestrian crossing. During the design phase, WGA undertook traffic modelling of the corridor to assess the existing and future conditions of each intersection utilising intersection modelling software, which informed the traffic signal upgrade requirements needed to alleviate safety concerns. The modelling led to a reduction in civil work scope, ultimately reducing construction costs while achieving the required safety benefits.

Following a masterplanning exercise, WGA provided fully integrated structural, civil and traffic engineering services for this major infrastructure upgrade, which included the development of a landscaped plaza area for passenger amenity, upgrade of the existing road network, including new roundabout and 1km of new roads, and new taxi and bus facilities, and construction of a 2000 space, multi-storey, short term car park, which can be doubled in size as demand increases. Traffic engineering associated with the car park and plaza required the need to accommodate a number of different user types with varying requirements, whilst minimising vehicular and pedestrian conflict. To assist with accommodating the flow of traffic throughout the Airport, traffic micro-simulation models were developed during design development. This approach assisted in developing a road network that met the current and future traffic demands without the need for costly grade separated traffic solutions. The modelling was relatively complex given the various user types associated with the Adelaide Airport.

North-South Corridor - Torrens to Darlington Reference Design— $15b CIVIL, GIS, HYDROGEOLOGY, PROJECT MANAGEMENT, STRUCTURAL, TEMPORARY WORKS AND TRAFFIC

The North-South Complete Joint Venture, formed from WGA in partnership with WSP and GHD, completed the reference design for the final section of the North-South Corridor from the River Torrens to Darlington. The final 10.5km section is the most complex part of the North- South Corridor. The roadway includes two sections of tunnels, and lowered and surface motorways. WGA staff provided many roles within the integrated design team, including leading the traffic modelling, which was critical in developing the overall solution and network connectivity requirements. This involved the assessment of other significant improvements in the Adelaide network that will also be required to facilitate the movement of traffic to the North-South Corridor.

The Traffic Modelling design improved connections between major arterial roads and the city ring route, for access into the CBD. It also unlocked a secondary access into the city via James Congdon Drive and Sir Donald Bradman Drive, removing the existing issue of congestion on Anzac Highway. Our design has seen significant improvements in travel times both North and South of the city, creating simpler and safer access for all road users.

WGA provided street lighting design aimed at insuring adequate lighting for improved pedestrian safety.

TRANSPORT CAPABILITY STATEMENT

Our Experience—Transport

Image Credit: Victoria's Big Build

Hall Road East Upgrade— $42m CIVIL, ELECTRICAL, GEOTECHNICAL, SUSTAINABILITY AND TRAFFIC The Hall Road East Upgrade saw the addition of an extra lane in each direction between McCormicks Road and Western Port Highway, upgrade to five intersections, new walking and cycling paths, and installation of centre median and kerb-side safety barriers. WGA's scope included the transformation of the existing Hall Road, Evans Road and Cranbourne Frankston Road intersections into a single signalised intersection. Consistent with other Major Road Projects Victoria projects, the main objective was to improve traffic flow and safety for the road users. WGA undertook the SIDRA Traffic modelling of the proposed layout to optimise the reference design and confirm the traffic throughput achieved the project targets.

Caroline Springs Boulevard, the Crossing and the Esplanade Intersection Design— $5.4m CIVIL, ELECTRICAL, GEOTECHNICAL AND TRAFFIC City of Melton engaged WGA as the design lead for the intersection upgrade of Caroline Springs Boulevard with the Crossing and the Esplanade, including detailed design of traffic, civil, drainage and geotechnical engineering services. The project included upgrade of the existing roundabout to a new signalised intersection in the suburb of Caroline Springs in Melbourne’s west. The objective was to provide controlled crossing locations for pedestrians and cyclists, promoting walking and cycling as a viable and safe alternative to driving, and to control vehicle movements at the intersection reducing congestion during peak periods.

Burnside Council City Wide Traffic Model— TRAFFIC

With considerable growth planned on the fringes of the City of Burnside, concerns about increasing traffic due to the surrounding arterial network approaching capacity triggered the need for council to undertake future planning and analysis. WGA developed a hybrid AIMSUN microsimulation model allowing accurate analysis of impacts of the proposed development. The model has been used to analyse Local Area Traffic Management treatments with great success. It sped up the council process as the outcomes of treatments were able to be visualised to elected members, and decisions could be made in a timely manner.

TRANSPORT CAPABILITY STATEMENT

Our Experience—Transport

Independent Design Verification and Independent Design Certification Crucial to any design, IDV and IDC validates design integrity by bringing in a third party to provide objective and unbiased evaluation of design. We understand the importance of verifying whether a design meets the intended function and performance requirements, whilst also complying relevant standards and regulations.

Image Credit: Main Roads Western Australia

Stephenson Avenue—$255m CIVIL, GEOTECHNICAL, ITS, LIGHTING, PAVEMENTS AND STRUCTURAL WGA was engaged as the independent design verifier for the Stephenson Avenue Extension project for the S2M Alliance. The project consists of the extension of Stephenson Avenue over Mitchell Freeway northbound to Cedric Street. The new grade separated interchange includes entry and exit ramps to the freeway for both north and southbound traffic. This new connection will significantly improve safety and congestion in the area. Also included as part of the project is a new bus interchange overpass at Stirling Station. Both new bridges over the Mitchell Freeway are proposed as incrementally launched bridges to minimise traffic disruption. WGA was engaged to complete the verification of road geometry, road safety barriers, drainage, structures, geotechnical, pavement, electrical and Intelligent Transport Systems.

Mitchell Freeway Extension— $180m CIVIL, GEOTECHNICAL, LIGHTING AND STRUCTURAL WGA was engaged to provide independent verification for the road geometry, safety barriers, drainage, structures, geotechnical, electrical and Intelligent Transport Systems associated with the Mitchell Freeway Extension. The project consisted of an extension of the Mitchell Freeway from Hester Avenue to Romeo Road. The works included a grade separation at Lukin Drive and Butler Boulevard as well as connecting road works on Wanneroo Road and Romeo Road. Across the project, there are three new bridges and three underpass structures including interface with the Public Transport Authority’s railway infrastructure.

Regency Road to Pym Street— $354m CIVIL, GEOTECHNICAL, STRUCTURAL, TEMPORARY WORKS AND TRAFFIC The R2P Alliance engaged WGA to undertake the independent design certification role for the Regency Road to Pym Street Project, across all engineering disciplines, and included the overpass structures and temporary works for both overpass installations. Verification included structures, geotechnical matters, road design, stormwater management and drainage, pavements, lighting, traffic modelling, and major temporary works, including all temporary works associated with the self-propelled modular transporters used in the installation of the Regency Road Bridge. In addition, WGA undertook the road safety audits for the project.

High Street Upgrade— $100m GEOTECHNICAL, CIVIL AND STRUCTURAL

WGA provided independent verification for the design and construction required to upgrade High Street between Stirling Highway and Carrington Street in Fremantle. As part of the upgrade, the existing signalised intersection at Stirling Highway was upgraded to a dual lane roundabout, including left turn bypass lanes to help reduce congestion. A new service road parallel to High Street minimises access points onto the main road and relieves residential traffic on High Street. As independent verifiers for the project, WGA was engaged to complete verification of road geometry, safety barriers, drainage, structures, geotechnical and pavements, lighting and Intelligent Transport Systems.

TRANSPORT CAPABILITY STATEMENT

Our Experience—Transport

Great Eastern Highway Bypass Interchange— $400m CIVIL, GEOTECHNICAL, ITS, LIGHTING, PAVEMENTS AND STRUCTURAL WGA was engaged as independent design verifier for the Greater Connect Alliance project. The works included the upgrade of Great Eastern Highway Bypass between Kalamunda Road and Roe Highway. The project included new freeway to freeway type interchanges at Roe Highway and Abernethy Road. As part of the scopes, WGA were responsible for verification of five new road bridges, a PSP bridge, two new pedestrian underpasses, noise/retaining walls, road geometry, stormwater drainage, electrical, lighting, and intelligent transport systems. ● Upgrades to the Great Eastern Highway Bypass, including the removal of the existing intersection at Stirling Crescent. ● Upgrades to parts of Abernethy Road. ● Graded separated freeway to freeway type interchanges at Abernethy Road and Roe Highway. ● Lloyd Street Extension including a new bridge over the Helena River.

Oaklands Rail Grade Separation— $214m CIVIL, ELECTRICAL, GEOTECHNICAL, STRUCTURAL, TEMPORARY WORKS AND TRAFFIC WGA undertook the independent design certification which saw the delivery of a new Oaklands station, a new Morphett Road bridge and associated roadworks for the realigned road, a pedestrian bridge at the eastern end of the station, public plazas, utility service relocations, realignment of rail track including and formation, signalling and electrification, landscaping, and an additional 50 commuter car parks. As well as certifying the design, WGA carried out a risk assessment and design compliance review against the contract requirements. Components of the independent design certification included structures and major temporary works, geotechnical matters, traffic modelling, road design, stormwater management and drainage design, pavements, lighting design, electrical and communications for stations, railway track design, rail signalling combined service route design for physical position and civil compliance, and railway electrification design.

Image Credit: Halo Civil Engineering

Leach Highway/Welshpool Road Interchange Upgrade— $93m CIVIL, LIGHTING AND STRUCTURAL WGA completed the independent design verification for the Leach Highway/Welshpool Road interchange upgrade which consisted of a new roundabout grade separation of Leach Highway at Welshpool Road and a bridge duplication over the existing railway corridor north of Welshpool Road. As independent verifiers for the project, WGA was engaged to verify road geometry, safety barriers, drainage, structures, electrical and Intelligent Transport Systems.

Mitchell Freeway Widening - Hester to Warwick— $190m CIVIL, GEOTECHNICAL, LIGHTING AND STRUCTURAL WGA completed the independent design verification for the Mitchell Freeway southbound widening from Reid Highway to Hodges Drive. The project consisted of verge side widening of the Mitchell Freeway southbound carriageway from Hodges Drive to Reid Highway. As part of this widening, new ramp works were completed at several ramps including Warwick Road, Ocean Reef Road, Hepburn Avenue and Hodges Drive. This also includes smart freeway upgrades for Shenton Avenue, Burns Beach Road, Neerabup Road and Hester Avenue. As independent verifiers for the project, WGA completed verification of road geometry, safety barriers, drainage, structures, geotechnical, pavements, electrical and Intelligent Transport Systems.

TRANSPORT CAPABILITY STATEMENT

Our Experience—Transport

Pavements

Often the make or break of new roads or existing road upgrades is, pavement design!

Understanding that every road surface has different needs depending on their intended use, location, and soil structure, our specialist pavement engineers hold an intimate understanding of pavements and materials as well as construction and maintenance practices. Looking at the bigger picture, we consider traffic loads, subgrade evaluation, materials, thickness, climate considerations, and maintenance and rehabilitation needs so we can facilitate the best possible outcomes for our clients and road users. Backed by an extensive knowledge of State Road Authority, Austroads and local council guidelines, our expertise spans from residential and commercial subdivisions to major arterials and freeways, port facilities, mining and renewable energy facility access tracks and intermodal terminals.

Golf Links Road— $39m CIVIL, ELECTRICAL, GEOTECHNICAL, PAVEMENTS, TRAFFIC AND SUSTAINABILITY The upgrade to Golf Links Road aimed to enhance road safety for all road users, featuring improvements to road surfaces, improvements to a six-way roundabout, two cross intersections, installation of traffic lights and a pedestrian crossing near a school, construction of new footpaths drainage upgrades and installation of safety barriers along sections of the road. WGA verified an option to adopt a Foam Bitumen Stabilisation pavement treatment, to increase the amount of existing pavement material that could be reused on site, reducing the quantity of virgin material used in the construction of the pavement. This was a highly sustainable solution and providing significant cost savings to the project, whilst also providing traffic staging benefits.

Hall Road East Upgrade— $42m CIVIL, ELECTRICAL, GEOTECHNICAL, PAVEMENTS, TRAFFIC AND SUSTAINABILITY The Hall Road East Upgrade involved adding an extra lane in each direction between McCormicks Road and Western Port Highway, enhancing five intersections to increase capacity and improve traffic flow, providing new walking and cycling paths, and installing centre median and kerb-side safety barriers. The site featured generally expansive subgrade with swell results ranging from 0% to 2.5%, and isolated sections of high expansive materials exceeding 2.5%. WGA undertook further assessment on the expansive nature of the site and revised the reference pavement design to address these highly expansive subgrade areas while maintaining a practical, cost-effective solution.

Goodwood, Springbank and Daws Roads Intersection Upgrade— $61m CIVIL, ELECTRICAL, GEOTECHNICAL, PAVEMENTS STRUCTURAL AND TRAFFIC

Goodwood Road is one of southern Adelaide’s major north-south arterial routes, with Springbank Road and Daws Road providing a key east-west connection. On average, over 60,000 vehicles a day travel through this location, with travel time delays in peak periods. The upgrade to the Goodwood, Springbank and Daws Roads intersection aimed to address safety and traffic volume issues at this highly travelled intersection. The intersection upgrade consisted of full depth asphalt pavements either constructed over imported granular subgrade replacement material or over existing remnant pavement material. WGA's pavement designs included the use of deflectograph testing to assist with determining the structural condition of the existing pavements and level of upgrade required. Constructibility was a key requirement of the project, along with limiting road closures during construction. This in part included the option of an asphalt working platform that could be installed should thin remnant pavement depths be encountered during boxing out.

TRANSPORT CAPABILITY STATEMENT

Our Experience—Transport

Australian Marine Complex Vessel Transfer Path— $61m CIVIL, DIGITAL ENGINEERING, ELECTRICAL, GEOTECHNICAL, HEAVY LIFTING AND PAVEMENTS

Located in Western Australia, 23km south of Perth, the 400ha Australian Marine Complex provides services for the repair, maintenance and construction of naval and commercial vessels, as well as infrastructure for the fabrication and assembly of offshore oil and gas modules. The Vessel Transfer Path Upgrade project allowed for the transport of larger vessels between the Common User Facility floating dock and the Civmec Shipbuilding Facility all within the Australian Marine Complex.

HEAVY INDUSTRIAL PAVEMENT DESIGN

The road design required a width of 19m and clearances of 25m, with a consistent longitudinal gradient of under 2% to ensure safe passage for the self-propelled modular transporters. To accommodate the 15t wheel loads, 1400kPa tyre pressures, and speeds of 1km/h, the pavement had to meet heavy industrial pavement standards, with a design life of 20 years. Geotechnical investigations revealed the need for high-quality crushed igneous rock in the top 100mm of the base course to create a tightly bound surface for sealing. WGA optimised the pavement design to minimise the initial cost while reusing as much existing pavement material as possible, utilising an adaptive design based on results of in-situ testing during construction.

TRANSPORT CAPABILITY STATEMENT

Our Experience—Transport

Lighting and Traffic Signals

Hall Road East Upgrade— $42m CIVIL, ELECTRICAL, GEOTECHNICAL, TRAFFIC AND SUSTAINABILITY

Lighting the way. Illuminating our roads with functional and effective lighting and traffic signals is essential for safe and efficient transportation. Our design engineering focuses on creating well-lit environments that enhance nighttime visibility, improve safety for drivers and pedestrians, and contribute to aesthetically pleasing streetscapes. Traffic signal design plays a pivotal role in optimising traffic flow, ensuring safety, and enhancing the overall driving experience. By carefully analysing traffic patterns, coordinating signal control, and selecting appropriate equipment, we can create efficient and user-friendly transportation systems for all.

This project formed part of the wider Hall Road Upgrade which comprised the addition of an extra lane in each direction between McCormicks Road and Western Port Highway, upgrade to five intersections to add capacity and improve traffic flow, new walking and cycling paths, and installation of centre median and kerb-side safety barriers. WGA undertook the detailed design for the complex signalised intersection arrangement, working collaboratively with the Department of Transport and Planning to ensure the design was documented and approved in a timely manner to meet the construction program..

Image Credit: Victoria's Big Build

Main North Road and Main North East Intersections with Nottage Terrace— $19m CIVIL

WGA delivered the detailed design and documentation of both Main North and Main North East Intersections with Nottage Terrace.

WGA managed and undertook detailed design to deliver these two projects including updating the traffic modelling. This area was a previous bottle neck for northern traffic to and from the CBD and, considering their close proximity, it required an integrated approach to maximise the outcomes. The improved traffic performance has significantly reduced travel times and improved local amenity as traffic no longer uses the local network to avoid these intersections.

Torrens Road to River Torrens— $801m CIVIL, ELECTRICAL, GEOTECHNICAL, HEAVY LIFTING, HYDROGEOLOGY, PAVEMENTS, STRUCTURAL, TEMPORARY WORKS AND TRAFFIC WGA led the traffic analysis, road design, pavements, water sensitive urban design, geotechnical and lighting teams for the project. WGA developed the concept and then the detailed design for the signalised gyratory intersection at Grange and Manton Street in a highly constrained location, to allow construction of the road bridge within the centre of the intersection. Since the completion of intersection, WGA engineers continued to monitor its performance and suggested improvements to the phasing and signal times to ensure optimal performance. The temporary intersection performed so well that travel times improved during construction through this section and the department received positive feedback from the public, which is unheard of especially during construction!

Caroline Springs Boulevard, the Esplanade and the Crossing Intersection Design— $5.4m CIVIL, ELECTRICAL, GEOTECHNICAL AND TRAFFIC City of Melton engaged WGA as the design lead for the intersection upgrade of Caroline Springs Boulevard with the Crossing and the Esplanade, comprising detailed design of traffic, civil, drainage and geotechnical engineering services. The project included the upgrade to the existing roundabout to a new signalised intersection in the suburb of Caroline Springs in Melbourne’s west. The project’s objectives were to provide controlled crossing locations for pedestrians and cyclists, to promote walking and cycling as a viable and safe alternative to driving, and to control vehicle movements at the intersection and, in doing so, reduce congestion during the peak periods.

Goodwood/Springbank/Daws Roads Intersection Upgrade— $61m CIVIL, ELECTRICAL, GEOTECHNICAL, STRUCTURAL AND TRAFFIC

Part of the wider SA Metro Congestion Initiative, WGA was awarded the finalisation of the business case and conceptual layout, and the detailed design of the road intersection upgrade. This included the realignment of Springbank and Daws roads and additional traffic lanes to improve road safety and travel times for motorists. Works included road widening, road realignment, upgraded and new pedestrian crossings, pedestrian/cyclist ramps and footpaths, new and upgraded traffic signals and road lighting, dedicated bicycle lanes on the approaches and through the intersection, and new landscaping treatments.

TRANSPORT CAPABILITY STATEMENT

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