UPDATE (7:24 a.m.) — One-way traffic control is now in place on State Route 166 near Chimineas Ranch Road, according to Caltrans. There's still no estimate of a full reopening.
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Eastbound lanes on State Route 166 are closed this morning, as crews clean up damage from a late-night accident.
California Highway Patrol officials received an alert around 8:30 p.m. Tuesday about a semi-truck that rolled and caught fire. Officials say a guardrail and bridge also showed damage.
Roads are currently closed both ways until later this morning, from Highway 101 near Santa Maria to Perkins Road. Then, around 8 a.m., one-lane traffic will take effect as crews make repairs.
This is a developing story. We'll continue to share updates as they become available.