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Caltrans : Roadwork on CA-4 Westbound entering at Lone Tree Way Bypass (Antioch). On Ramp closed until 10-30 PM. From 6:30 PM Thursday, August 13, 2026 to 10:30 PM Thursday, August 13, 2026.

A construction was reported on CA-4 W near Contra Costa on August 14, 2026 at 1:30 AM.

Address
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Started
Aug 13, 6:30 PM
Last Updated
2 months, 2 weeks ago
Aug 13, 10:15 PM
Resolved
Aug 14, 4:30 AM
Coordinates
37.9583, -121.7423
Update History
8 observations
Caltrans : Roadwork on CA-4 Westbound entering at Lone Tree Way Bypass (Antioch). On Ramp closed until 10-30 PM. From 6:30 PM Thursday, August 13, 2026 to 10:30 PM Thursday, August 13, 2026. Aug 13, 10:15 PM
Caltrans : Roadwork on CA-4 Westbound entering at Lone Tree Way Bypass (Antioch). On Ramp closed until 10-30 PM. From 6:30 PM Thursday, August 13, 2026 to 10:30 PM Thursday, August 13, 2026. Aug 13, 8:30 PM
Caltrans : Roadwork on CA-4 Westbound entering at Lone Tree Way Bypass (Antioch). On Ramp closed until 10-30 PM. From 6:30 PM Thursday, August 13, 2026 to 10:30 PM Thursday, August 13, 2026. Aug 13, 8:15 PM
Caltrans : Roadwork on CA-4 Westbound entering at Lone Tree Way Bypass (Antioch). On Ramp closed until 10-30 PM. From 6:30 PM Thursday, August 13, 2026 to 10:30 PM Thursday, August 13, 2026. Aug 13, 8:00 PM
Caltrans : Roadwork on CA-4 Westbound entering at Lone Tree Way Bypass (Antioch). On Ramp closed until 10-30 PM. From 6:30 PM Thursday, August 13, 2026 to 10:30 PM Thursday, August 13, 2026. Aug 13, 7:45 PM
Caltrans : Roadwork on CA-4 Westbound entering at Lone Tree Way Bypass (Antioch). On Ramp closed until 10-30 PM. From 6:30 PM Thursday, August 13, 2026 to 10:30 PM Thursday, August 13, 2026. Aug 13, 7:30 PM
Caltrans : Roadwork on CA-4 Westbound entering at Lone Tree Way Bypass (Antioch). On Ramp closed until 10-30 PM. From 6:30 PM Thursday, August 13, 2026 to 10:30 PM Thursday, August 13, 2026. Aug 13, 7:15 PM
Caltrans : Roadwork on CA-4 Westbound entering at Lone Tree Way Bypass (Antioch). On Ramp closed until 10-30 PM. From 6:30 PM Thursday, August 13, 2026 to 10:30 PM Thursday, August 13, 2026. Aug 13, 7:00 PM
Source: 511_sfbay · ID 511.org/1535319 First seen Aug 13, 2026 7:00 PM
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