Delaware's Scenic and Historic Highways Program has been spurred by the creation and policies of the National Scenic Byways Program, first established in 1991 by the federal
Intermodal Surface Transportation Efficiency Act (ISTEA). This program, managed by the U.S. Department of Transportation in partnership with state departments of transportation or other
responsible state agencies, designates National Scenic Byways and All-American Roads based on their scenic, historic, recreational, cultural, natural and/or archeological intrinsic qualities.