Overnight Closures Scheduled for Posey Tube (State Route 61)

Friday, September 12 to Saturday, September 13, 2025

Alameda County - Caltrans will perform an overnight closure of the Posey Tunnel on Friday, September 12, 2025, to Saturday, September 13, 2025, from 10:00 PM to 4:30 AM for painting.

To ensure the safety of crews and the public, the Posey Tube will be closed Friday night through Saturday morning from 10:00 PM to 4:30 AM. During this time, motorists are advised to use alternate routes and allow extra travel time.

Closure Details:Location: Posey Tube (Alameda to Oakland) Dates: Friday, September 12 - Saturday, September 13, 2025 Time: 10:00 PM - 4:30 AM

Be Work Zone Alert and expect travel delays.

Caltrans will update its Twitter page at https://x.com/CaltransD4 on the latest highway conditions, and drivers are encouraged to check out Caltrans Quickmap https://quickmap.dot.ca.gov/

Motorists can also receive 24/7 highway condition information statewide by calling 1-800-427-ROAD or 1-800-427-7623.

Caltrans thanks the public for their patience and cooperation as we continue to improve California's transportation network

For 24/7 traffic updates, please visit 511.org: https://x.com/511SFBay For real-time information, visit Caltrans QuickMap: https://quickmap.dot.ca.gov Follow us on X: https://x.com/CaltransD4 Or call 1-800-472-7623, 1-800-427-ROAD for state highway conditions statewide.