Construction Update – Week of April 29


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 northbound 15 Cantu-Galleano Ranch Rd. on-ramp will be closed Wednesday, May 1 from 8 p.m. to 5 a.m. Please use Limonite Ave. as a detour.

The northbound 15 Magnolia Ave. on-ramp will be closed on Friday, May 3 from 10 p.m. to 6 a.m. Please use Ontario Ave. as a detour.


Mission Blvd. at the 60 will be closed Monday, April 29 to Wednesday, May 1 nightly from 8 p.m. to 5 a.m. for electrical work.

Riverside Dr. will be closed Wednesday, May 1 from 8 p.m. to 5 a.m. 


These giant yellow bags on the 15 at the Santa Ana River Bridge are filled with water to conduct a strength test. Crews are testing the strength of this Mi-Jack gantry crane to prepare for bridge widening.


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 – Eastbound 91 will have lane closures from Lincoln Ave. to Main St. from 9 a.m. to 3 p.m. Friday, May 3. The Lincoln Ave. on-ramp and Main St. off-ramp will also be closed during this time.

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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