The Riverside County Transportation Commission (RCTC) has awarded a contract to Parsons Brinckerhoff (PB) to provide engineering services for a major expansion of the SR-91 toll road in Riverside County, Calif.

The project will study the addition of one general purpose lane and two toll lanes in each direction on SR-91 from SR-241 to Pierce Street through the City of Corona, which is approximately 12 mi. (19 km). It includes widening of existing undercrossings and water crossings, and realignment and reconstruction of existing exit and entrance ramps within the project limits. The project also entails a direct connector to link I-15 to the toll lanes and potentially extend this connection 5 mi. (8 km) along I-15.

The expansion, with an estimated construction cost of $1 billion, is a flagship project within the RCTC's 10-year construction program. The segment of SR-91 is one of the most congested routes in Southern California. The current average daily traffic of 280,000 vehicles is expected to increase by 60 to 70 percent over the next 20 years.

As the prime consultant on the project, PB is responsible for preparation of a California Department of Transportation project report, traffic engineering, preliminary engineering and all environmental documentation for the project.

For more information, visit www.pbworld.com.

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