NAPA COUNTY (KRON) - UPDATE: All lanes are now open.
An overturned truck has closed Highway 121 in Napa County on Monday afternoon, according to the Napa County Sheriff's Office.
The closure is happening at Wooden Valley Road. The road is expected to be closed for up to 3 hours.
Drivers are urged to find an alternate route.
Stay with KRON4 for updates on this breaking news story on-air, online, and on the KRON4 app.
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