LIVERMORE (CBS SF) — Authorities have reopened all eastbound lanes of I-580 in Livermore after an accident involving two big-rigs snarled traffic for several hours, according to CHP.

The accident was first reported shortly before 11 a.m. just east of South Vasco Road in Livermore. The right and center lanes have remain blocked.

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The Dublin CHP office tweeted out a photo that showed two big-rig trucks were involved in the collision.

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The lanes reopened at around 1:18 p.m., according to authorities. Motorists are advised to expect residual delays.