Published: Nov 01, 2024

Wednesday, November 13, 2024, at 8:00 PM to 4:00 AM

San Mateo County - The California Department of Transportation (Caltrans Bay Area) will conduct the annual mandatory emergency response drill at the State Route 1 (SR-1) Tom Lantos (Devil's Slide) Tunnels.

The mandatory emergency response drill begins on Wednesday, November 13 at 8:00 PM and conclude on Thursday, November 14 at 4:00 AM.

For the safety of crews and the public, northbound and southbound traffic lanes on SR-1 through the Tom Lantos (Devil's Slide) Tunnels will be closed during the exercise.

Lantos Tunnel-Detour Routes:

During the tunnel closures, the following detours between Pacifica and Half Moon Bay will be in effect. The California Highway Patrol (CHP) will be on scene to assist motorists:

• From Pacifica: North on SR-1 to southbound on Interstate-280 (I-280)
• From Half Moon Bay: East on State Route 92 (SR-92) onto northbound (I-280)

The emergency management exercise will be a coordinated effort including the California Highway Patrol (CHP), State Fire Marshals, San Mateo County Sheriff's Office, Pacifica Fire and Police Departments, California Office of Emergency Services, CalFire and other first responders.

This exercise will include testing of fire suppression and communication systems, exercise scenarios, and multi-agency coordination.

For real-time traffic, click on Caltrans QuickMap: https://quickmap.dot.ca.gov/
For 24/7 traffic updates, follow 511.org: https://511.org/

All work is weather dependent

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