California Department of Transportation

07/09/2026 | Press release | Distributed by Public on 07/09/2026 17:22

Daytime Weekend Lane and Ramp Closures on Wb State Route 4 In Bay Point Between San Marco Boulevard and Kinne Boulevard.

Daytime Weekend Lane and Ramp Closures on Wb State Route 4 In Bay Point Between San Marco Boulevard and Kinne Boulevard.

Published: Jul 09, 2026

Saturday, July 11,2026, 5:30 a.m. to 1:30 p.m.

Contra Costa County - Caltrans maintenance will conduct lane closures on westbound SR-4, from Bay Point/San Marco Boulevard through Kinne Boulevard, specifically affecting lanes 3 and 4 (two right lanes) and the "West" Willow Pass Road on-ramp to westbound SR-4 from will be closed. These closures are necessary to repair a bridge deck spall in lane 3.

Please prepare to merge early and slow for the cone zone.

Eastbound SR-4 traffic is not expected to be affected. Motorists are advised to expect delays and allow extra time.

For more information about D4 Projects, visit: Caltrans D4 Current Projects

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.

California Department of Transportation published this content on July 09, 2026, and is solely responsible for the information contained herein. Distributed via Public Technologies (PUBT), unedited and unaltered, on July 09, 2026 at 23:23 UTC. If you believe the information included in the content is inaccurate or outdated and requires editing or removal, please contact us at [email protected]