WGA 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

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