SAN RAMON (CBS SF) — Three northbound lanes on Interstate Highway 680 in San Ramon have reopened after closing when a truck carrying wet concrete crashed earlier Tuesday morning, according to the California Highway Patrol.

The crash was reported just before 8:30 a.m. near the Bollinger Canyon on-ramp to northbound Highway 680.

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The substance spilled onto both sides of the freeway. Southbound lanes were briefly blocked but have since reopened. A far right northbound lane remains closed, according to the CHP.

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Fire officials and Caltrans crews are working this morning to clean up the spill and fully reopen the roadway, CHP officials said.

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