Marin Headlands Tunnel & Traffic Updates

flyer about tunnel closure
download a closure notice to post or share

Tunnel, Parking, and Pull-Out Closures Jan. 9 - Early May, 2017

Updated January 18, 2017

Download Closure Notice

Chinese Language Closure Notice
Spanish Language Closure Notice

Detour Map (updated)

The Baker-Barry Tunnel to the Marin Headlands ("5-Minute Tunnel") will be closed beginning Monday, January 9, for a preservation project.

The tunnel will remain closed seven days a week through early May to all users. All traffic to the Marin Headlands will be routed along Conzelman Road.

For public safety and to maintain a safe flow of traffic to the headlands, the parking lot at Battery Spencer and the vehicle pull-outs on Conzelman east of the McCollough Road traffic circle will be closed during the construction.

Bookmark this page and return for updates on closure dates, alternative routes, and other important information:

Contact: GGNRA Public Affairs, 415-561-4732 or
map of tunnel detour route
Map of impacted region (click to download PDF)
The Marin Headlands is Open for Business

GGNRA and the Federal Highway Administration will enforce a traffic flow for safe access to Marin Headlands sites during the tunnel closure. Maps and detour information will be posted on this web page.

To ease general congestion issues in the Marin Headlands, GGNRA recommends:
  • Avoid periods of peak congestion in the Marin Headlands. Avoid weekday rush hours (including 3PM - 7PM). Avoid Saturdays or Sundays after 2PM
  • Photographers seek bridge views at other park locations, including Fort Baker and Crissy Field
  • Recreational bicyclists use Conzelman Road on off-peak times or explore alternative destinations
Alternative Spots for Bridge Photography

Avoid the congestion on Conzelman Road during the tunnel preservation project. Check out these other wonderful spots at Golden Gate National Recreation Area for the perfect shot of the bridge:
About the Tunnel Preservation Project: Safer Surfaces. Better Lighting.

This project will repair the tunnel's concrete structure. Current cracks and leaks result in a slippery film of sediment that creates a safety hazard for vehicles and bicyclists.

The current lighting in the tunnel is the single largest energy user at Golden Gate National Recreation Area! A new tunnel LED light system will reduce energy use by an estimated 40% and create better illumination in the tunnel for vehicles and bicyclists.

We will also replace water and sewer lines mounted in the tunnel. The outdated water and sewer lines are subject to frequent breaks which result in tunnel closures.

Contact the Park

Mailing Address:

Golden Gate National Recreation Area
Building 201, Fort Mason

San Francisco, CA 94123-0022


(415) 561-4700
Pacific West Region Information Center (415) 561-4700 Special Event & Commercial Film Permits (415) 561-4300

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