Overnight Lane Closures on 101 Freeway in Los Angeles

Caltrans bridge work will impact traffic near Santa Monica Boulevard this week

Published on Mar. 2, 2026

Caltrans has announced overnight lane closures on the 101 Freeway at Santa Monica Boulevard in Los Angeles starting Monday, March 3rd and running through March 7th. The closures, which will occur between 12:01 a.m. and 5 a.m. each night, are part of a $15.8 million project to upgrade bridge rails and improve durability along three bridges on the 101 Freeway.

Why it matters

The overnight lane closures on a major Los Angeles freeway like the 101 can significantly impact traffic flow and commute times for drivers in the area. This project is part of Caltrans' ongoing efforts to maintain and improve the city's critical transportation infrastructure.

The details

Caltrans said motorists should expect intermittent overnight lane and ramp closures, including up to three lanes closed in each direction of the 101 Freeway, as well as the closure of the northbound Santa Monica Boulevard off-ramp. The speed limit in the construction zone will also be reduced by 10 mph, and drivers should exercise caution and follow all posted signs.

  • The lane closures will start at 12:01 a.m. every night through March 7, sometimes running through 5 a.m.

The players

Caltrans

The California Department of Transportation, responsible for maintaining and improving the state's transportation infrastructure.

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What’s next

The ongoing $15.8 million project to upgrade bridge rails and improve durability along three bridges on the 101 Freeway is expected to be completed by the end of 2027.

The takeaway

The overnight lane closures on the 101 Freeway near Santa Monica Boulevard are necessary for critical infrastructure upgrades, but will likely cause significant traffic disruptions for late-night drivers in the area. Motorists should plan ahead, allow extra time, and exercise caution when navigating the construction zone.