Caltrans : Roadwork on I-680 Southbound entering at Stone Valley Rd (Alamo). On Ramp closed until 6 PM. From 10:00 AM Tuesday, May 19, 2026 to 6:00 PM Tuesday, May 19, 2026.
A construction was reported on I-680 S near Contra Costa on May 19, 2026 at 5:01 PM.
Caltrans : Roadwork on I-680 Southbound entering at Stone Valley Rd (Alamo). On Ramp closed until 6 PM. From 10:00 AM Tuesday, May 19, 2026 to 6:00 PM Tuesday, May 19, 2026.
May 19, 3:15 PM
Source: 511_sfbay · ID 511.org/1496656
First seen May 19, 2026 3:15 PM