SR91 Corridor Improvements
Riverside County Transportation Commission
The “91 Project”, divided into 10 key segments along the State Route 91 (SR 91) and south on Interstate 15 (I-15), adds both regular lanes and express lanes to the eastbound and westbound SR-91 in Riverside County, California. Improvements extend the existing Orange County Transportation Authority SR 91 Express Lanes eight miles east to I-15. The project also widened the existing interstate from five to eight lanes in each direction, including an expanded single high occupancy (HOV) lane to two tolled express lanes, adding one general purpose lane, and adding one auxiliary lane to manage on/off traffic. Improvements to the I-15/ SR-91 interchange, three miles of improvements on I-15, and a tolled express lane direct connector from eastbound SR 91 to southbound I-15 were also included.