Construction Update – Week of May 6


Intermittent lane reductions are scheduled on northbound and southbound

I-15, between Weirick Rd. and State Route 60, from 8 p.m. to 5 a.m. weeknights. During lane reductions, at least one lane will remain open at all times.

The following ramps are scheduled to be closed:

Schedule Location
Monday, May 6 – Tuesday, May 7
8 p.m. to 4 a.m. nightly

15 Northbound
Magnolia On-Ramp

Thursday, May 9
8 p.m. to 4 a.m.

15 Northbound
Ontario Ave. Off-Ramp
El Cerrito On-Ramp

Crews work on the pier wall at the Santa Ana River Bridge.


A temporary traffic configuration is in place through summer on El Cerrito Road at I-15 to allow crews to widen the bridge. Please allow for extra travel time and use caution when traveling through the area.



Neighboring Projects

Cajalco Rd. / I-15 Interchange Improvement Project: Lane reductions are expected at Cajalco Ave. over the next several weeks. Visit for more information.

Limonite Ave / I-15 Interchange Improvement Project: Full freeway closures are expected on the 15 at Limonite Ave. over the next few weeks. Visit for dates and more information.

Caltrans – The 6th St. off-ramp on northbound 15 in Norco will be closed Saturday, May 4 from 5 a.m. to 11 a.m. for electrical repairs. The northbound 15 to westbound 91 connector will be closed Sunday, May 5 from 5 a.m. to 11 a.m. for maintenance. Please remember to reduce your speed in the work zone. .

Due to the dynamic nature of construction, this information is subject to change.

If information is needed in another language, please contact RCTC at (951) 787-7141 for free translation services.

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