Riverside, California. USA.



Riverside County Transportation Commission (RCTC)



Construction budget

USD 250 million

Key facts

Project length of 24 km. Highway improvement. Two additional Tolled Express Lanes (TELs) in each direction (High Occupancy Vehicle (HOV) lanes).

Outside widening of existing freeway and 11 bridge widenings and numerous retaining/sound walls. Significant river crossing over the Santa Ana River. Toll Collection System infrastructure.


Detailed design.


Design Build Institute of America (DBIA) National Excellence Award in the Transportation category. 2022. Honour Award for Transportation in the American Council of Engineering Companies of California (ACEC CA) 2022 Engineering Excellence Awards and American Council of Engineering Companies (ACEC) National Recognition Award.

I-15 Express Lanes Project in Riverside, California, USA

Riverside County Transportation Commission (RCTC) and its partners in the project, the California Department of Transportation and the Federal Highway Administration, are carrying out substantial...


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