  a national scenic byway is a road recognized by the united states department of transportation for one of the six "intrinsic qualities": archeological, cultural, historic, natural, recreational, and/or scenic. the program was established by congress in 1991 to preserve and protect the nation's scenic but often less-traveled roads and promote tourism and economic development. the national scenic byways program (nsbp) is administered by the federal highway administration (fhwa). the most scenic byways are designated all-american roads, which must meet two out of the six intrinsic qualities. the designation means they have features that do not exist elsewhere in the united states and are unique and important enough to be tourist destinations unto themselves. as of november 2010, there are 120&nbsp;national scenic byways and 31&nbsp;all-american roads, located in 46&nbsp;states (all except hawaii, nebraska, rhode island, and texas). ==history== the nsbp was established under the intermodal surface transportation efficiency act of 1991, which provided $74.3&nbsp;million in discretionary grants. on may&nbsp;18, 1995, fhwa specified the intrinsic qualities that would serve as criteria for designating road as national scenic byways or all-american roads. in september u.s. transportation secretary federico peÃ±a announced the first 14&nbsp;national scenic byways and six all-american roads. on june&nbsp;9, 1998, the transportation equity act for the 21st&nbsp;century (tea-21) provided $148&nbsp;million to states so they could develop state roads to take advantage of the program. on august&nbsp;10, 2005, president george w. bush signed the safe, accountable, flexible, efficient transportation equity act: a legacy for users (safetea-lu), which provided $175&nbsp;million to states and ind
Lists_of_roads_in_the_United_States National_Scenic_Byways