Roads, transportation & public access

Roads & Transportation

State Route 1 just south of Point Reyes Station

Construction phase

Latest known status · Jul. 29, 2026
Caltrans lists the project in its construction phase. One-way traffic control is scheduled to begin Aug. 10, 2026 and continue through November. A 21-day full closure of the bridge is targeted for after Labor Day weekend in September 2027.

Caltrans District 4 · Lagunitas Creek Bridge Project · Open the official Caltrans project page

Replace the 1929 bridge, widen the culvert to the north, add wider shoulders, ADA-compliant sidewalk and curb ramps, and add a crosswalk at Sir Francis Drake Boulevard. The Papermill Creek Trail entrance near the bridge will close when work begins; the C Street entrance will remain open.

Sources: Official Caltrans District 4 project page and July 29 traffic advisory.

What to watch

• One-way traffic control begins Aug. 10: A temporary signal will alternate traffic through the work zone. Caltrans expects one-way control from August through November 2026. Open the Caltrans advisory

• Trail access changes when work begins: The Papermill Creek Trail entrance near the bridge will close; the C Street entrance will remain open.

• Full closure targeted for September 2027: Caltrans says a 21-day full bridge closure is targeted for after Labor Day weekend in September 2027. Exact dates have not been announced.

• Project completion targeted for summer 2028: The schedule includes winter suspension, construction resuming in spring 2027 and plant-establishment work through summer 2028.