Site information:

Grays Well Road, 3.3 mi west from I-8, eastbound (P.M. 77.4)

32.710251,-114.923171

Plaque information:

State plaque

Plaque text:

Plank Road, 1914 to 1927

This unique plank road, seven miles long, was the only means early motorists had of crossing the treacherous Imperial sand dunes. The eight by twelve 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.

Plaque placed by the State Department of Parks and Recreation in cooperation with the Imperial Valley Pioneer Association, October 16, 1971.

Registered 1/21/1971