A driver was injured when a rural bridge in Northern California collapsed beneath a vehicle, causing it to overturn and land on its roof near the Eel River, the California Highway Patrol said.

The crash happened Friday near Covelo, a remote community in Mendocino County about 150 miles north of San Francisco.

CHP officers from the Ukiah area responded to the solo vehicle crash at Hill Road and Eel River Ranch Road, where the agency said the bridge “completely collapsed” while the vehicle was crossing it.

“As the bridge gave way, the vehicle overturned and came to rest on its roof next to the river,” the CHP said in a statement.

The driver, who was not identified, sustained only minor injuries, according to the CHP.

The cause of the collapse was not immediately clear. 

Motorists were asked to avoid the area and use alternative routes.

The collapse happened in a sparsely populated part of inland Mendocino County, where small communities, ranches and rural properties are linked by a limited network of roads and bridges. Covelo sits in Round Valley, northeast of Ukiah and inland from California’s North Coast.

Hill Road and Eel River Ranch Road are local roads outside the town center, not part of state Highway 162, the main route that connects Covelo with Highway 101.

The bridge remained impassable after the crash, according to the CHP. It was not immediately known how long the closure would last.