Construction Resolved

Caltrans : Roadwork on CA-4 Eastbound and Westbound between San Joaquin County Line (Discovery Bay) and Byron Hwy (Brentwood). All lanes closed. Avoid the area. From 10:00 PM Friday, July 10, 2026 to 5:00 AM Monday, July 13, 2026.

A construction was reported on CA-4 W near Contra Costa on July 11, 2026 at 5:00 AM.

Road

CA-4 W

Area

Contra Costa

Address

Loading…

Started

Jul 10, 10:00 PM

Last Updated

3 months, 2 weeks ago

Jul 13, 5:00 AM

Resolved

Jul 13, 11:00 AM

Coordinates

37.9275, -121.3324

Update History

5 observations

Caltrans : Roadwork on CA-4 Eastbound and Westbound between San Joaquin County Line (Discovery Bay) and Byron Hwy (Brentwood). All lanes closed. Avoid the area. From 10:00 PM Friday, July 10, 2026 to 5:00 AM Monday, July 13, 2026. Jul 12, 1:00 PM

Caltrans : Roadwork on CA-4 Eastbound and Westbound between San Joaquin County Line (Discovery Bay) and Byron Hwy (Brentwood). All lanes closed. Avoid the area. From 10:00 PM Friday, July 10, 2026 to 5:00 AM Monday, July 13, 2026. Jul 12, 6:45 AM

Caltrans : Roadwork on CA-4 Eastbound and Westbound between San Joaquin County Line (Discovery Bay) and Byron Hwy (Brentwood). All lanes closed. Avoid the area. From 10:00 PM Friday, July 10, 2026 to 5:00 AM Monday, July 13, 2026. Jul 11, 1:00 PM

Caltrans : Roadwork on CA-4 Eastbound and Westbound between San Joaquin County Line (Discovery Bay) and Byron Hwy (Brentwood). All lanes closed. Avoid the area. From 10:00 PM Friday, July 10, 2026 to 5:00 AM Monday, July 13, 2026. Jul 11, 8:15 AM

Caltrans : Roadwork on CA-4 Eastbound and Westbound between San Joaquin County Line (Discovery Bay) and Byron Hwy (Brentwood). All lanes closed. Avoid the area. From 10:00 PM Friday, July 10, 2026 to 5:00 AM Monday, July 13, 2026. Jul 10, 10:00 PM

Source: 511_sfbay · ID 511.org/1519540 First seen Jul 10, 2026 10:00 PM