15 Express Lanes Project Facts

15 Express Lanes Project Overview Video


The Riverside County Transportation Commission (RCTC) and its project partners, the California Department of Transportation and the Federal Highway Administration, are investing $471 million to improve Interstate 15.

The project will add two express lanes to I-15 in both directions, from Cajalco Road to State Route 60, widen bridges and add soundwalls. This design-build project will be built within the existing median and offer multiple entry and exit points to the express lanes.


  • Improve existing and future mobility along the I-15 corridor
  • Reduce congestion and improve traffic operations
  • Provide a time-saving travel choice with multiple entry / exit points
  • Expand the tolled express lane network
  • Increase travel time reliability


RCTC is proceeding with a design-build process to expedite delivery of the project and minimize construction costs.

Design-Build Contract Awarded: April 2017
Pre-Construction Activities: Current
Construction in the Median: Spring 2018
Express Lanes Open to Motorists: 2020

Project Fact Sheet