Abstract: As highway agencies across the country attempt to balance rebuilding existing highways, reducing congestion and user delays, and improving safety, the use of accelerated highway rehabilitation methods has become a necessity. This has been the case for the California Department of Transportation (Caltrans), which recently undertook a major concrete pavement rehabilitation project on Interstate-15 near the city of Ontario, California. The I-15 Ontario Corridor carries about 200,000 average daily traffic with 4-6 lanes each direction, about 6% of which is heavy trucks during peak hours. The size of the project is approximately $86 million in the engineer’s estimate cost. Construction is scheduled to start February 2009 and to be completed by April 2010. The major scope of the project is the replacement of concrete pavement on two outside lanes in both directions along the 7.5-km (4.7-mi) stretch. Due to a complexity of construction access and the rehabilitation process, the project was designed to implement various types of concrete pavement rehabilitation methods. Basically, the old concrete pavement will be replaced with one of: (1) normal portland cement concrete (28-day curing-time mix); (2) rapid strength concrete (12-hour curing-time mix); (3) fast-setting hydraulic cement concrete (4-hour curing-time mix); or (4) precast concrete panel. Construction scheduling and analysis program Construction Analysis for Pavement Rehabilitation Strategies (CA4PRS) was used to demonstrate that the combination of rehabilitation methods was the most cost-effective strategy to shorten construction duration, minimize lane closure impact, and achieve longer-life pavement design. To take advantage of unique experimental technologies being adopted on the I-15 Ontario Project, Caltrans plans to conduct field monitoring studies with the Federal Highway Administration (FHWA) and University of California, Berkeley researchers to compare rehabilitation process and progress, and work-zone traffic impact between the design and material types.
Publication Year: 2009
Publication Date: 2009-01-01
Language: en
Type: article
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Cited By Count: 2
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