Traffic & Transit

Big-Rig Overturns, Blocks Lanes On Eastbound Highway 4 In Antioch

It was not immediately known when all lanes of the freeway, a crucial link in Eastern Contra County, would reopen.

(CBS Bay Area)

November 5, 2025

Several lanes of eastbound Highway 4 in Antioch are blocked after a big-rig overturned Tuesday morning.

Find out what's happening in Martinezfor free with the latest updates from Patch.

The Contra Costa office of the California Highway Patrol first reported the big-rig blocked the left three lanes of the freeway around 8:50 a.m. In an update posted shortly before 10 a.m., the agency said the left three lanes were still closed, while the rightmost lane was open.

Officials did not say what caused the big rig to overturn.

Find out what's happening in Martinezfor free with the latest updates from Patch.

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