Milton Grinstead, 65, of Clearlake suffered head trauma in the single-vehicle rollover crash, according to California Highway Patrol Officer Steve Tanguay.
Tanguay said the crash occurred at 2:22 p.m. Sunday.
He said that Grinstead was driving his 1991 Ford Explorer eastbound on Highway 20 west of Bruner Drive when, for an unknown reason, he lost control of the vehicle.
The Explorer went off the roadway, where the front of the vehicle hit a boulder and subsequently rolled over, Tanguay said.
REACH Air Ambulance, which landed at Lucerne Elementary School, transported Grinstead to Santa Rosa Memorial Hospital with head trauma, according to Tanguay.
Santa Rosa Memorial Hospital spokesperson Katy Hillenmeyer said Monday that Grinstead was in “good” condition.
Hillenmeyer said Grinstead remained in the hospital Monday afternoon.
Tanguay said CHP Officer Brendan Bach is investigating the collision.
E-mail Elizabeth Larson at This email address is being protected from spambots. You need JavaScript enabled to view it. .
