RICHMOND (CBS SF) — A crash on westbound I-80 overturned two vehicles and blocked all lanes for over an hour, causing heavy traffic delays during rush hour Tuesday afternoon.

The crash reportedly happened near El Portal at around 2:45 p.m. Images from Caltrans cameras showed two vehicles that were overturned.

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At least one person was reportedly injured in the crash. CHP officials did not immediately say the extent of injuries caused by the crash.

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KCBS also provided alternative routes for those trying to commute north on I-80.

Shortly before 4 p.m., the right westbound lane of I-80 had reopened as well as the on-ramp at El Portal. Traffic remained heavily backed-up in both directions.

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At about 4:10 p.m., all lanes had reopened, according to authorities.