New Day, New Conflict (The Challenges of Water/Wastewater Design for a Multi-Billion Dollar Highway Design-Build Project)

摘要

Large urban highway widening projects will have many water and wastewater pipeline conflicts. Those conflicts are caused by various aspects of the highway project including the following: road pavement widening through lane addition, new/realigned storm sewer, new bridges, new retaining walls and proposed grading changes. This paper presents the challenges and advantages of water and wastewater pipeline relocation design as part of the design-build large urban highway project with Public-Private Partnership (3P) funding and project delivery. This paper also addresses possible ways to improve the process for future work. The utility relocation portion of the project consisted of eliminating all possible water and wastewater conflicts with the aforementioned design components of the roadway. The project scope consisted of three large highway corridors in Tarrant County, Texas. Tarrant County is the third most populous county in Texas according to the 2010 U.S. Census and the county seat is Fort Worth, TX. Approximately 150 water and wastewater conflicts were analyzed throughout the project. This equates to 106 miles (170 kilometers) of water, wastewater and franchise utilities impacted by the project. The total construction cost for these three urban highway reconstruction projects was $4.1 billion.