Updated: East Contra Costa Road Closures


As of 9:17 pm Monday, here is a list of East Contra Costa road closures as the area is under flood and wind warnings.

Antioch Street Closures
L St. & Sycamore Drive
Portions of 6th Street
Portions of 9th Street
Portions of 10th Street
Portions of M Street
Portions of O Street
Fulton Shipyard area

Update per Mike Bechtholdt of City of Antioch: All of our roads are back open. We still have some barricades out at 6th and M but they will be picked up shortly.   The status of the roads could obviously change quickly with additional rainfall and High Tides but at this time everything is open

Brentwood Street Closures
Balfour & Deer Valley now has a detour… report of multiple spots where flooding and standing water are occurring. — UPDATE — now open.

Balfour & Marsh Creek – report of multiple locations with standing water.

Byron/Discovery Bay Area
Byron Hwy / Hoffman Ln per CHP
Byron Hwy / Camino Diablo per CHP

Marsh Creek Road
Per CHP, reporting mud & rocks in the roadway in the 1500 block of Marsh Creek Road.
—UPDATE— roadway open as of 5:30 am with some standing water and mud. Use caution.

Oakley Street Closures
Single lane closed going southbound on O’Hara by Freedom

Pittsburg Street Closures
Parkside Dr. between Andrew Ave. and Cannery Ave.
Willow Pass Rd west of Balclutha Way

Check back for updates.



  1. Went through Byron by middle school it was flooded. I made the mistake of going through standing water, only as I drove by car further through the water it was like going through a creek with fast moving water. Thank God I didn’t get stuck. I will Not be doing that again!! Everyone stay safe and do not go through flooded areas.

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