Construction Active

Caltrans : Roadwork on CA-4 Westbound entering at Lone Tree Way Bypass (Antioch). On Ramp closed until 5 AM. From 7:00 PM Wednesday, August 19, 2026 to 5:00 AM Thursday, August 20, 2026.

A construction was reported on CA-4 W near Contra Costa on August 20, 2026 at 2:01 AM.

Road

CA-4 W

Area

Contra Costa

Address

Loading…

Started

Aug 19, 7:01 PM

Last Updated

10 minutes ago

Aug 20, 2:45 AM

Coordinates

37.9618, -121.7416

Update History

2 observations

Caltrans : Roadwork on CA-4 Westbound entering at Lone Tree Way Bypass (Antioch). On Ramp closed until 5 AM. From 7:00 PM Wednesday, August 19, 2026 to 5:00 AM Thursday, August 20, 2026. Aug 20, 2:45 AM

Caltrans : Roadwork on CA-4 Westbound entering at Lone Tree Way Bypass (Antioch). On Ramp closed until 5 AM. From 7:00 PM Wednesday, August 19, 2026 to 5:00 AM Thursday, August 20, 2026. Aug 20, 1:45 AM

Source: 511_sfbay · ID 511.org/1538198 First seen Aug 20, 2026 1:45 AM