Update: Lewiston Fire Chief Travis Myklebust said the fire was largely contained as of 10:30 p.m.
Update: One northbound lane of U.S. Highway 95 has been opened north of Lewiston, according to the Idaho State Police.
Northbound traffic on U.S. Highway 95 north of Lewiston is completely blocked as a fire, visible from the Lewiston-Clarkston Valley, burns at the top of the Lewiston Hill.
Authorities were first alerted to the fire at 7:44 p.m. by a caller driving by on the highway. The cause of the fire is unknown at this time.
Several firefighting agencies have responded to the incident.
More information will be posted as it becomes available.