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Overturned big-rig shuts down Highway 4 near Discovery Bay

State Highway 4 is closed in both directions Thursday afternoon just east of Discovery Bay due to an overturned big-rig, according to the California Highway Patrol.

The overturned big-rig was reported at about 2:45 p.m. just west of Old River Bridge in unincorporated Contra Costa County.

The road will remain closed until the truck is removed, CHP officials said. The estimated time of reopening is 6:30 p.m. to 7:30 p.m.

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