NO. 845 PLANK ROAD - This unique plank road, seven miles long, was the only means early motorists had of crossing the treacherous Imperial sand dunes. The 8-by-12-foot sections were moved with a team of horses whenever the shifting sands covered portions of the road. Double sections were placed at intervals to permit vehicles to pass.
Grays Well Road, 3.3 Miles West of Eastbound I-8 (Milepost 77.4)