Marin County folks and commuters, heads up—lane closures are coming to State Route 37. Caltrans is kicking off a maintenance project in Novato, and it’s going to impact traffic between Atherton Avenue and the Petaluma River Bridge.
Closures start Monday, July 14. This roadwork is supposed to improve the busy corridor linking Marin and Sonoma counties. If you drive from San Rafael, Mill Valley, or anywhere nearby, you’ll probably feel the effects.
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Lane Closure Schedule for SR-37 Maintenance Project
Caltrans says drivers should expect a series of lane closures on State Route 37 in northern Marin. They need these closures to get the Capital Preventive Maintenance project done and, honestly, it’s about time this stretch got some attention.
Eastbound Lane Closures
If you’re heading from Novato toward Vallejo, take note: one eastbound lane from US-101 to the Petaluma River Bridge will close Monday, July 14 from 7 a.m. to 1 p.m. Crews will be out there putting up K-rail barriers, creating a safer work zone.
If you live in Tiburon or Corte Madera and usually take this route for your morning commute, you’ll probably want to plan for some delays. No one likes getting stuck in traffic before coffee.
Nighttime Closures Near US-101
More lane closures are coming near the US-101 split on Monday night, July 14, from 9 p.m. until 3 a.m. Tuesday. They scheduled these at night to avoid messing with most commuters’ routines.
Still, if you’re out late or heading home from work, keep these restrictions in mind. Nothing worse than an unexpected detour at midnight.
Project Scope and Timeline
This maintenance project brings some big changes to the roadway. Knowing what’s coming can help folks from Sausalito to Novato plan their drives a little better.
Roadway Improvements
Here’s what Caltrans says they’ll tackle:
People in Novato and San Rafael who drive this route a lot have probably noticed it’s overdue for repairs.
Ongoing Work Schedule
After the first round of lane closures, work continues from Tuesday, July 15 through Friday, July 18. For commuters from Belvedere and Kentfield, there’s a bit of relief—this phase happens behind K-rail barriers, so no extra lane closures are expected.
Travel Recommendations for Marin Residents
As usual, all this roadwork depends on the weather. If you’re in Ross, Point Reyes Station, or anywhere nearby, keep an eye on the forecast before heading out during the project.
Safety and Traffic Updates
Caltrans wants all drivers to take it slow and stay alert in the work zone. If you’re heading from western Marin spots like Stinson Beach to the east, it’s smart to check live traffic before you go.
People living in Strawberry, Tamalpais Valley, and other southern Marin neighborhoods—especially if you sometimes drive north—might want to try different routes during busy construction times. Or, just plan for a bit more travel time if your trip includes State Route 37.
Here is the source article for this story: Day, Night Lane Closures for Westbound, Eastbound SR-37 Capital Preventive Maintenance Project in Marin County
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