A crash on the San Mateo-Hayward Bridge has caused a severe traffic backup on the bridge and on Highway 101.
The crash happened around 2:15 and blocked the two left lanes. A sig-alert was issued at 3:15, but was canceled just after 3:30 when all lanes opened.
Expect a slow commute. Check traffic maps before hitting the road.
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Find out what's happening in Union Cityfor free with the latest updates from Patch.
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