Construction Update – Week of August 26


The heaviest concrete girders ever to be made in California will be “on the go” during the next few months, traveling at night from Perris to the Santa Ana River Bridge in Norco.

Crews will widen the massive Santa Ana River Bridge using 55 girders, some weighing more than 132 tons and measuring 175 feet long. The girders will make a three-hour trek with CHP escorts on southbound I-215 to westbound Murrieta Hot Springs Road, and then on northbound I-15 to Norco, a distance of about 61 miles.

The girder transport will occur intermittently on weeknights during off-peak hours, beginning at 1 a.m. Motorists can expect short traffic breaks and lane closures over the next few months until all 55 girders complete their journey to the project site. 


A full closure on northbound 15 at Hidden Valley Pkwy. is scheduled next week.

The schedule is as follows:

Date, Time Location Detour
Monday, Aug. 26
10 p.m. to 5 a.m.
Northbound 15
at Hidden Valley Pkwy.
Exit at Hidden Valley Pkwy. and then re-enter northbound 15 at Hidden Valley Pkwy.
Wednesday, Aug. 28 –
Thursday, Aug. 29
8 p.m. to 4 a.m., nightly
Northbound 15
El Cerrito Rd.  on-rampNorthbound 15
Ontario Ave. on- & off-rampEB 91/ NB 15 Connector
Use Cajalco Rd.

Use Magnolia Ave.

Intermittent lane reductions also are scheduled on northbound and southbound 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.

Closures on northbound and southbound express lane connectors are also planned intermittently on weeknights.



There are no I-15 closures scheduled from Friday morning, Aug. 30 to Monday night, Sept. 2 in observance of the holiday weekend. Have a happy and safe Labor Day!


Neighboring Projects

60 Swarm Pavement Rehabilitation Project: A full closure of eastbound State Route 60, between I-15 and the 60/91/215 interchange in Riverside, is scheduled for the weekend of Aug. 23. No closures are planned for the Labor Day weekend.  For more information, visit

Cajalco Rd. / I-15 Interchange Improvement Project: Alternating freeway lane and ramp closures are scheduled.  Visit for closure information.

Limonite Ave / I-15 Interchange Improvement Project: For complete schedule and closure information, visit .

Westbound 91 Express Lanes (OC): The westbound 91 Express Lanes in Orange County will be closed Friday, Aug. 23 at 10 p.m.. to Monday, Aug. 26 at 4 a.m. to prepare for new transponder technology. The #1 general purpose lane also will be closed nightly. The Riverside County segment of the 91 Express Lanes will remain open.

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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