Riverside, Calif. – The Riverside County Transportation Commission (RCTC) has been awarded a $25 million United States Department of Transportation (USDOT) Better Utilizing Investments to Leverage Development (BUILD) grant to help relieve traffic on the eastbound SR-91 corridor between SR-241 and SR-71 in Corona. The funding marks a major milestone for the SR-91 Eastbound Corridor Operations Project (ECOP), bringing the project one step closer to begin construction in 2028.

“With more than 300,000 vehicles traveling SR-91 between Riverside and Orange counties each day, continued investment in the corridor is needed to keep our communities moving,” said RCTC Chair Raymond Gregory. “RCTC appreciates the U.S. Department of Transportation for recognizing the importance of this project through the BUILD grant program, and we thank Representatives Ken Calvert and Young Kim for their leadership in supporting the project’s grant application. These funds help improve traffic operations on the 91.”

The 91 ECOP will add a three-mile, non-tolled auxiliary lane on eastbound SR-91 between the SR-241 connector and SR-71 near Green River Road. Improvements will also include widening two bridges, constructing retaining walls, implementing rockfall mitigation measures, replacing overhead signs for better visibility, and building a new two-lane exit ramp at Green River Road.

The SR-91 corridor is one of the most traveled corridors in the United States, serving as a vital link for commuters, businesses, and goods movement throughout the region. The $25 million BUILD grant provides a significant federal investment toward advancing the project from design to construction. RCTC is advancing the project in partnership with the California Department of Transportation and the Orange County Transportation Authority to help improve traffic flow, support economic development, and enhance travel reliability throughout the region.

The final design and construction of the 91 ECOP are estimated at $178 million and will be funded through a combination of federal, state, and local funds, as well as toll revenues.

USDOT’s BUILD grant program is a nationally competitive discretionary grant program that funds significant transportation infrastructure projects across the country. The grant is used for transportation infrastructure projects with significant local or regional impact.

For more information, visit rctc.org/91ecop.

About the Riverside County Transportation Commission (RCTC)

RCTC delivers transportation solutions to support our growing region and the economy of the future. We are the steward of the Measure A sales tax dollars, which funds transportation improvements across Riverside County. For the latest Riverside County transportation news, visit: https://www.rctc.org/the-point