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CalTrans Tom Lantos Tunnel One-way Traffic Overnight 12/19-21 for Storm Prep Drain Cleaning
December 19th, 2023 @ 8:00pm - December 20th, 2023 @ 4:00am
Published: Dec 18, 2023
Southbound Tunnel, December 19-21; 8:00pm – 4:00am Each Night
SAN MATEO COUNTY — Caltrans has scheduled overnight closures of southbound State Route (SR-1) at the Tom Lantos Tunnel (Devil’s Slide). The closures are to facilitate drain cleaning.
Traffic Control Measures:
One-way traffic control will be inplace to safely guide vehicles through the open northbound tunnel. Provisions have been made for emergency vehicle access.
Closure Schedule:
- Southbound Tunnel only – December 19-21- 8:00 PM to 4:00 AM
Changeable message and directional signs will be in place to assist motorists traveling in the area. The California Highway Patrol (CHP) will be on site during the closures.
Please drive with caution. Slow for the Cone Zone and Be Work Zone Alert. Caltrans thanks motorists for their patience while we work to maintain our state’s highways, bridges, and tunnels.
For real-time traffic, click on Caltrans QuickMap: http://quickmap.dot.
