TRAFFIC ADVISORY
SAN MATEO COUNTY – Caltrans will conduct its first annual mandatory emergency response drill at the State Route 1 (SR-1)-Tom Lantos (Devil’s Slide) Tunnels.
The mandatory six-hour emergency response drill begins Friday, December 5 at 10:00 PM and concludes Saturday, December 6 at 4:00 AM. The exercise is weather permitting.
For the safety of crews and the public, all northbound and southbound 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 also help direct motorists:
From Pacifica: North on SR-1 to southbound on Interstate-280 (I-280)
From Half Moon Bay: East on State Route 92 onto northbound I-280
The emergency management exercise will be a coordinated effort including the CHP, San Mateo County Sheriff, Pacifica Police Department, Cal-Fire, North County Fire and Coastside Fire Protection Districts, and other first responders.
During this exercise, there will be fire simulation, crash simulation, and simulated smoke.