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50 csengineermag.com august 2019 mands of the project. The collaborative software provided inspectors and contractors real-time access to design files on tablets, eliminating lengthy meetings and manual review and workflows, saving hundreds of hours. Coordinating information sharing through ProjectWise saved ALDOT an estimated USD 50,000 and 40,000 resource hours. "MicroStation clash detection was hands down the most effective technology utilized in the project," commented Taylor. ALDOT saved over USD 10 million by implementing this software feature. The reports generated from this BIM review methodology al- lowed designers to fix costly design and construction errors prior to project bidding, ensuring utilities were properly located and eliminating construction change orders. Having an automated and optimal design review process avoided construction delays and reduced construction time by 65 days. Integrating LumenRT with MicroStation visualization capabilities allowed ALDOT to provide dynamic visual representation of the project rather than traditional 2D drawings to optimize project understanding. This facilitated public and stakeholder communi- cation as well as saved ALDOT USD 2 million in lawsuits filed based on misinterpretation of ROW lines. The animated renderings demonstrated how ROW lines were not only legitimate but also improved surrounding properties. Rejuvenating Downtown Birmingham Currently under construction, the project continues to use ProjectWise as the method for sharing and exchanging information in real time with on-site teams through mobile devices. The 3D BIM model produced with Bentley's digital design applications enabled ALDOT to effectively convey the design to the people of Birmingham, meeting its responsibility to the public to not only build safe infrastructure but also save the public money. Bentley provided ALDOT an integrated technology solution to meet de- velopmental needs of the city of Birmingham while reducing environmental impact by minimizing noise levels in the developed urban area. The new, structurally safe and functional roadway infrastructure provides better interstate access by consolidating ramp locations, creating an area for improved park space beneath the bridges. This mega-reconstruction project is reuniting the north and south sides of central Birmingham where they once were divided by the urban I-59/I-20 interstate. It has provided the catalyst for rejuvenating Birmingham with the new City Walk initiative, which will add parks, walking paths, cafes, and music venues, increasing commerce and economic growth within the community. Project Summary Organization: Alabama Department of Transportation Solution: Roads and Highways Location: Birmingham, Alabama, United States Project Objectives: • To implement digital workflows to coordinate information exchange and meet the 14-month construction schedule for the reconstruction of Alabama's I-59/I-20 corridor. • To develop an accurate 3D BIM model to optimize design and cost estimates. • To effectively convey design and project impact to stakeholders and the public. Products Used: CulvertMaster, Descartes, FlowMaster, LumenRT, MicroStation, OpenRoads, ProjectWise, StormCAD FAST FACTS: • ALDOT initiated a USD 750 million reconstruction project to improve safety and functionality of the I-59/I-20 interchange in central Birmingham. • The visualization group delivered a 3D digital engineering model for multiple uses to meet the 14-month construction schedule. ROI: • Using ProjectWise to coordinate information exchange streamlined workflows among the numerous consultants to save 36 days in delivery time. • Performing clash detection in MicroStation identified 1,100 errors, saving USD 10 million and 65 days in construction time. • Bentley's integrated applications enabled ALDOT to produce an interactive 3D model for contractors to optimize cost estimates. AMY HEFFNER is a manager of civil product marketing at Bentley Systems, focused on the promotion of Bentley's civil design applications, including OpenBridge, OpenRail, OpenRoads, and OpenSite.

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