Overnight Full Closures of Eastbound State Route 4 Between Laurel Road and Sand Creek Road in the City of Brentwood

Nightly Full closures continue between the hours of 8:00 p.m. to 8:00 a.m.

Contra Costa County -For the safety of the motoring public and our crews, Caltrans Construction will continue full closures on SR-4; spanning from Hillcrest Avenue to Byron Highway for ongoing paving and drainage operations. Full closures of eastbound SR-4 will be implemented, nightly from 8:00 p.m. to 8:00 a.m. on July 1, 2026, and Monday July 6, 2026, in the City of Brentwood between Laurel Road and Sand Creek Road. Please note as work progresses the full closure may shorten, please follow posted detour signs and slow for the cone zone. To search for current District 4 lane closure information, please click here.

Closure Details July 2, 2026, and Monday July 6, 2026, 8 p.m. to 8 a.m.

• Full Closure-Eastbound SR-4 between Laurel Road and Sand Creek Road
• Lane Closures- Eastbound SR-4 between Hillcrest Avenue and Laurel Road(two lanes closed)

Please note: All scheduled work is weather dependent and subject to change.

WHAT TO EXPECT

Motorists are advised that complete closures, as well as lane and ramp closures, will continue along SR-4 Sunday through Thursday nights between 8:00 p.m. and 8:00 a.m. The westbound closures on SR-4 will reopen at 5:00 a.m. This project is tentatively scheduled to be complete by Summer 2027.

Changeable message signs (CMS) will be posted throughout the corridor to assist drivers. For 24/7 traffic updates, follow 511.org on X. For real-time traffic, visit Caltrans QuickMap.

DETOUR INFORMATION

EASTBOUND:

From WB SR-4:

• Take Laurel Road Exit
• Turn right on Laurel Road
• Follow Laurel Rd
• Turn left on Hilcrest Rd
• Turn left on Sand Creek Rd
• Take EB on-ramp to SR-4

All work is weather dependent and is subject to change.

Please follow posted signs and detour routes during these closure periods. Motorists are advised to expect delays and allow extra travel time. Please see next page for more detour information.

Caltrans thanks the public for their patience and cooperation during these necessary closures and improvements. Your understanding helps keep our crews and roadways safe for everyone.

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.