r/BAbike•
plattyjo

Trail Closures + GGB Sidewalk Closure this Sunday, 4/12

ICYMI, here's some info on trail closures in the Headlands and the GGB Sidewalk closure this Sunday.

On Sunday, April 12, the Mermaid Run will impact access around the Golden Gate Bridge.

• Sidewalk closures: 5:00–9:30 AM
• East sidewalk: CLOSED to pedestrians & cyclists
•West sidewalk: CLOSED to cyclists

🚲 Detour option:
Bike shuttles will run between the East Lot and Alexander Ave bus pad.
—
Event details:
7:00–9:00 AM | 300–400 participants
• 10 Mile (Sirena): crosses the bridge
• 10K: passes under the south end
• 5K: stays off bridge property

**

You may have already seen this project if you’ve been riding in the Headlands: Old Springs Trail is now fully closed through August 3 while crews replace 6 damaged boardwalks. This is a hard closure for the entire duration of the project, so there will be no access during construction for visitor safety.

**

California State Parks is starting maintenance on Coast View Trail from Wednesday, April 1 through May.

The trail will stay OPEN, but expect:
• Active work crews (weekdays and/or weekends) with signage and crews to direct traffic
• Heavy equipment + hand crews
• Possible delays; be ready to slow or stop

Work includes heavy brushing, reshaping of tread — including segments of deep entrenchment — and enhancing drainage features to keep the trail riding better long-term.

Posted Apr 9, 2026, 9:21 PM UTC

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