California Demonstration Project: Pavement Replacement Using a Precast Pavement System on I-15 in Ontario.

摘要

As part of a national initiative sponsored by the Federal Highway Administration under the Highways for LIFE program, the California Department of Transportation was awarded a $5 million grant to showcase and demonstrate the use of precast concrete pavement system (PCPS) technology for the replacement of concrete slabs on Interstate 15 in Ontario, CA. The project involved the rehabilitation of 4.7 miles of roadway including 696 PCPS slab installations. The rehabilitation project provided the opportunity to evaluate PCPS alongside traditional cast-in-place slab replacement methods. In addition, the project involved the use of other innovative technologies. The design phase of this project utilized CA4PRS analysis to optimize construction staging plans and Dynameq to characterize traffic flow during construction and rehabilitation activities. Also, a road safety audit was performed in the early stages of the construction to critically examine safety considerations in various design and planning elements. This report documents the details of this project, including a description of the applied PCPS technology and its design, construction staging techniques and maintenance of traffic, slab installation, and performance evaluations and economic analysis. This report also contains other items relevant to HfL projects, including a description of HfL goals, technology transfer activities on the project, and a detailed analysis of data to evaluate if the HfL goals were satisfied. This project serves as a great example of the successful use of multiple innovations on a large scale project. The project also demonstrates the key factors for success: vast breadth of knowledge and expertise required, the importance of planning and attention to details, and the significance of good communication across various divisions within an agency. Specifically, in the case of PCPS, this project achieved tremendously high production rates for slab installations in nighttime work windows.