Using Bentley’s design applications, YYECC established a collaborative modeling environment, creating a standard template library, and roadway, interchange, bridge, tunnel and structural models for the rapid transport system. The interoperability of Bentley applications facilitated integrated modeling and clash detection, improving design ac- curacy and management. BIM designers relied on clash detection features and digital workflows within the CDE to provide accurate data to specific design consultants to ensure model accuracy. With four different design companies and multiple engineering disciplines, each discipline needed to ensure their model integrated with the other models precisely. OpenBridge Modeler and OpenRoads allowed specific engineering disciplines to design in context according to specifications to apply the model in daily project management. Perform- ing clash analysis on the pipeline and roadway digital models during the pipeline corridor design revealed different elevations between the models. The team identified and resolved 210 elevation issues between the pipes and the roadway and underpass parking lot during the modeling phase. Bentley’s integrated technology facilitated more efficient communication among the various design disciplines and enabled early error detection and resolution prior to construction, eliminating costly on-site rework. With integrated modeling, the team could closely coordinate the models and data, optimizing design integrity. “The model integrity is improved by 90 percent,” stated Li Chao, vice director of BIM Center at YYECC. Connected Data Environment and BIM Optimize Execution By combining information mobility with information modeling using a CDE and robust BIM methodologies, YYECC achieved digital management, industrializing project execution and delivery while facilitating a smarter digital city. Using Bentley’s applications to implement the digital solution improved progress management by 42 percent and design intent by 92 percent, realizing 63 percent design optimization. The interoperable BIM engineering applications helped meet requirements for cost management by defining standard attributes at early project stages. This innova- tive application of engineering data for cost management guaranteed efficiency and accuracy of multidimensional cost management, improving engineering quantities and costs by 70 percent. Using integrated BIM technology in the CDE reduced the review and approval process from one week to one hour, lowered the deficiency of acquired early-stage materials by 40 percent, and improved on-site information quality by 30 percent. On previous projects, four full-time employees were required to manage approvals for cost submittals; however, under the new collaborative management process, only one person is required to accomplish the same scope. Industrializing project delivery processes through digital 3D modeling, visualization, and information sharing en- hanced design efficiency by 25 percent, reduced design drawing errors by 60 percent, and improved visualization efficiency by 70 percent incorporating LumenRT. Having the Bentley platform accessible via mobile devices and web interface helped improve collaboration by 25 percent, while the ability to incorporate remote collection of data into the CDE improved data integrity on the construction line. By adopting iModels and PDF as lightweight BIM appli- cations to reduce file size, the team further simplified and accelerated data transmission and information sharing for more efficient management. Using ProjectWise and BIM software, YYECC optimized execution and delivery of Kunming’s rapid transport system and resolved the complex management issues. Implementing digital processes and workflows to connect users and stakeholders facilitated effective collaboration and development of Kunming as a new digital city. Digital DNA Drives Urban Revitalization Recognizing the successes achieved through collaborative digitalization of the Kunming transportation infrastructure project, the Chinese government has introduced a new directive to other PPP projects in the region to adopt similar BIM methodologies and technologies. Leveraging a CDE supported by BIM methodologies optimized information sharing and accessibility and established the digital DNA required for future decision making by the owner-operator. The new connected digitalized process enables reuse of data for other PPP projects to help drive urban revitalization and achieve development in the Guandu area of a fully digital, new smart city. Using Bentley applications to create a robust CDE and digital twin model of the rapid transport system, YYECC has established the basis for better construction projects and a source for improving digital urban management for future generations of Kunming City. Through execution of this transportation infrastructure project, the company realized the full potential of industrialized project delivery, verifying feasibility of BIM for PPP projects and promoting digital city initiatives. “We firmly believe that going digital, embracing digital workflows, is the best way to create a smart city,” commented Chao. 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