Traffic & Transit
I-15 Lane Reductions, On-Ramp Closures From Temecula Through Murrieta Announced
Drivers can expect overnight delays on the northbound I-15 from Temecula to Murrieta Thursday into Friday.

SOUTHWEST RIVERSIDE COUNTY, CA — The Riverside County Transportation Department continues its work on the northbound I-15 through Temecula and Murrieta, they announced Thursday.
Overnight, lane reductions were scheduled to affect northbound I-15 drivers heading from Rancho California Road through Winchester Road, according to the department.
Northbound I-15 Lane Reductions:
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- Thursday, from 10 p.m. to 6 a.m.
- Temecula Parkway to Winchester Road
Northbound I-15 Rancho California Road Direct On-Ramp Closure:
- Thursday night, from 9 p.m. to 5 a.m.
This is all part of the ongoing Interstate 15 Smart Freeway Pilot Project that remains under construction.
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A total of $33.5 million is being invested in this, one of the busiest corridors in Southern California, from northbound I-15 from San Diego/Riverside County Line in Temecula to the I-15/I-215 Interchange in Murrieta.
According to the Riverside County Transportation Commission, the pilot project will ultimately use sensors and 'smart' technology to continuously monitor real-time traffic conditions on this eight-mile, non-tolled section of I-15.
"Severe traffic congestion occurs in this area, due to a high volume of vehicles entering the freeway simultaneously, especially during peak afternoon and evening hours. The pilot project will also use ramp meters that work as a coordinated system that adapts to allow more or fewer vehicles to enter I-15 at any given time from the Temecula Parkway, Rancho California Road, and Winchester Road on-ramps.
"Designed as a two-year pilot project, the project is anticipated to improve overall traffic flow and reduce rear-end collisions by maintaining steady travel speeds within the I-15 corridor, without highway expansion and related construction costs and impacts.
Drivers may initially experience short delays on the on-ramps but will gain overall time savings once on the freeway, with fewer stops and starts."
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