LIVERMORE (CBS SF) — All eastbound lanes have reopened Monday afternoon hours after a big rig toppled over on I-580, dumping hundreds of pounds of grain across three lanes of the freeway.

The accident just west of the Grant Line Road exit in the Altamont pass took place around 6:30 a.m. The California Highway Patrol, a medical crew, firefighters and Caltrans have all responded to the scene.

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Fortunately, the crash took place in the opposite direction of the morning commute still traffic was backed up for miles on the busy stretch of freeway connecting Tracy to the East Bay.

The No. 2-3-4 lanes were all blocked and heavy duty tow trucks have been requested.

No injuries have been reported and the crash remained under investigation.

As of 11:11 a.m., the right and center lanes remained closed, according to authorities.

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CHP announced that the lane closure was down to just the right lane shortly after 2 p.m.

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The right lane finally reopened at 2:20 p.m. The CHP was advising drivers to seek alternate routes.