The Point: Sign up to stay informed of work this spring and summer

Construction is just around the corner for a new lane on southbound Interstate 15 in Corona and Temescal Valley.

Work is scheduled to start the second half of May on RCTC’s I-15 Interim Corridor Operations Project, which will add a non-tolled lane from the Cajalco Road on-ramp to the Weirick Road off-ramp, next to the outer shoulder.

The highway is wide enough to accommodate the new lane, and crews will strengthen the shoulder pavement to handle the weight of traveling vehicles and restripe the lanes. Once completed, southbound I-15 in this area will include four lanes.


RCTC approved a construction contract this spring. The new lane is anticipated to open in three to four months, with financial incentives for the contractor to complete work ahead of schedule.

0522 15 ICOP Point Article Crop

Although the lane addition is less than one mile, it is expected to help relieve traffic congestion where the 15 Express Lanes end at Cajalco Road. It also will:

  • Add space for emergency vehicles along the inner shoulder
  • Add or upgrade guardrails
  • Improve drainage systems
  • Install new overhead signs

With construction coming soon, drivers will be seeing k-rail, reduced lane and shoulder widths, construction signs, and equipment. Please watch for nighttime lane and ramp closures and follow the 55 mile per hour speed limit in the project area.

Sign up for alerts below or text 15iCOP to (844) 771-0995 for text message alerts. Make sure to follow us at @theRCTC on social media for project updates too.

Also, please note that this temporary lane will be in place for three to four years. RCTC and project partners are working on engineering and environmental studies for the Interstate 15 Corridor Operations Project, which will add a permanent lane to this section of southbound I-15, create wider lanes and shoulders, modify the southbound I-15 Cajalco Road on-ramp and Weirick Road off-ramp, widen the Bedford Wash Bridge, build retaining walls, and improve drainage.