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Caltrans Advises Overnight Closures for Devils Slide Drain Cleaning in Northbound Only

November 14th, 2023 @ 8:00pm - November 15th, 2023 @ 4:00am

State Route 1 – Tom Lantos Tunnel (Devil’s Slide) Overnight Closures Northbound Tunnel, November 14 and 15 8:00pm – 4:00am Each Night.


SAN MATEO COUNTY — Caltrans has scheduled overnight closures of northbound 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 tunnel. Provisions have been made for emergency vehicle access.


Closure Schedule: • Northbound Tunnel only – November 14 and 15 – 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.


For real-time traffic, click on Caltrans QuickMap


Date: November 14 , 2023

District: 4 – Oakland

Contact: Alejandro Lopez

Phone: (510) 385-6856


November 14th, 2023 @ 8:00pm
November 15th, 2023 @ 4:00am
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