At roughly 9:21 pm Saturday, East Contra Costa Fire responded along with the California Highway Patrol on a report of a pedestrian that had been struck by a vehicle on Highway 4 in the Town of Byron.
Engine 59 responded to the area near Bixler Road where they located a man down in the roadway. Patient care was provided and the man was airlifted to San Joaquin General Hospital.
The scene was turned over to CHP.
No further information as provided.