CERRITOS (CBSLA.com) — A big-rig hauling 25 tons of glass overturned Friday night on the transition road from the eastbound 91 Freeway to the northbound 605 Freeway in Cerritos.

The incident happened around 7 p.m. and blocked lanes during the rush-hour commute, according to California Highway Patrol.

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Drivers backed up on the eastbound 91 were redirected to the southbound 605.

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It’s unclear how the big-rig overturned.

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The driver’s condition was not given.