Highway 37 To Close Between Mare Island And Sears Point For 55-Hour Project
Highway 37 in the North Bay will be closed in both directions between Mare Island and Sears Point this weekend for a 55-hour project, necessitating a 40-mile detour for drivers.
San Francisco Oakland San Jose, CA, October 21, 2026 —
Highway 37 will close in both directions between Mare Island and Sears Point this weekend for a project scheduled to last 55 hours, according to the information provided. Drivers traveling through the affected area will face a 40-mile detour.
The closure will cover the segment between Mare Island and Sears Point. The available information does not specify the exact start and end times, or which calendar dates are meant by “this weekend.” It also does not identify the agency or organization responsible for the project.
The stated detour distance is 40 miles. However, the route drivers will be directed to take was not provided, and no details were given about access for local traffic, emergency services, or people traveling to destinations within the closed segment. The information also does not describe the work being carried out or explain why it requires a 55-hour closure.
Those details leave the precise timing and routing arrangements unclear. The summary provided does not include information about whether the closure could be extended, whether any partial access will be available during the project, or how updates will be communicated.
For now, the confirmed information is limited to the highway segment, the two-way closure, the project duration and the detour distance. No specific reopening time, alternate route, project purpose or responsible agency was included in the details provided.
Story summarized from the original created by KGO on abc7news.com, see more information here.
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