Nighttime Closure of State Route 37 (SR-37) at the Novato Creek Bridge for Drilling Work in Marin County

Published: Sep 30, 2024

Closures start Tuesday, Oct. 8 from 10 p.m. to 10 a.m. on Eastbound SR-37

Marin County - Caltrans is scheduled to start exploratory drilling on the Novato Creek Bridge Replacement project on State Route 37 (SR-37) in October. Drilling is required to determine the replacement bridge's foundation requirements.

One of two lanes will be closed on Eastbound SR-37 from Tuesday, Oct. 8 through Thursday, Oct. 10 from 10 p.m. until 10 a.m. each night. At least one lane will be open for traffic.

A full closure of Eastbound SR-37 from Monday, Oct. 14 to Thursday, Oct. 17 is scheduled from 10 p.m. until 10 a.m. each night.

If additional drilling is needed, tentative work is scheduled from Monday, Oct. 21 through Thursday, Oct. 24. Caltrans will send out a new advisory if that work is needed.

Caltrans will activate Changeable Message Signs (CMS) to notify the public ahead of time.

Detour for Eastbound SR-37 full closure

Drivers should take the off-ramp US-101 at Atherton Avenue.
Take a right onto Atherton Avenue and follow Atherton until you re-enter SR-37 at Black Point.

The Novato Creek Bridge Replacement is scheduled to go into construction in 2027.

With this project, Caltrans proposes to reduce flooding from stormwater and adapt to projected 2130 sea-level rise for Novato Creek Bridge on SR-37 in Marin County.

For more information about the project, see bit.ly/4dmEAG2

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: https://quickmap.dot.ca.gov/
For 24/7 traffic updates, follow 511.org: https://x.com/511SFBay

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