Interstate 15 Express Lanes Project Southern Extension

The proposed project would add capacity by extending the I-15 Express Lanes, currently under construction, by an additional 14.5 miles. The proposed new segment would extend from Cajalco Road in Corona, through Temescal Valley, to State Route 74 (Central Avenue) in Lake Elsinore. The project proposes adding two tolled express lanes in both directions within the I-15 median to accommodate increasing traffic volumes in Riverside County.

Once built, the project would improve traffic operations and travel times, expand travel choice through carpooling and mass transit, increase travel time reliability, manage long-term traffic congestion, provide a cost-effective mobility solution, and expand and maintain compatibility with the regional express lanes network.

Other project features include widening up to 15 bridges, creating multiple express lane entrance and exit points, as well as building noise barriers, retaining walls, drainage systems, and electronic toll collection equipment and signs.