Construction Resolved

Caltrans : Roadwork on CA-4 Westbound between Byron Hwy (Brentwood) and Marsh Creek Rd (Brentwood). All lanes closed. Avoid the area. From 7:45 PM Wednesday, May 20, 2026 to 5:00 AM Thursday, May 21, 2026.

A construction was reported on CA-4 W near Contra Costa on May 21, 2026 at 2:48 AM.

Road

CA-4 W

Area

Contra Costa

Address

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Started

May 20, 7:48 PM

Last Updated

6 hours, 23 minutes ago

May 21, 4:45 AM

Resolved

May 21, 11:00 AM

Coordinates

37.8965, -121.6425

Update History

1 observations

Caltrans : Roadwork on CA-4 Westbound between Byron Hwy (Brentwood) and Marsh Creek Rd (Brentwood). All lanes closed. Avoid the area. From 7:45 PM Wednesday, May 20, 2026 to 5:00 AM Thursday, May 21, 2026. May 20, 8:00 PM

Source: 511_sfbay · ID 511.org/1497256 First seen May 20, 2026 8:00 PM

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