When I was a kid I was thrilled that the Yellowstone Trail ran near our home in upstate New York - it made me feel closer to my grandparents in Hector, MN.
http://www.yellowstonetrail.org/id2.htm"The Yellowstone Trail was the first transcontinental automobile highway in the United States through the northern tier of states from Washington through Massachusetts. Yet too few people are aware of its existence or its social, political and economic effects on either the local communities or the nation.
This transcontinental route was conceived by J.W. Parmley of Ipswitch, SD, in 1912. The automobile was just becoming popular but intercity roads were plagued with sand, potholes and mud. Bicyclists of the previous decade, organized as the Wheelmen and counting thousands as members, had been pushing state and federal governments for years for roads. Yet, in 1912, there were few good, all weather roads, no useful long distant roads and no government marked routes. Railroads had been the dominant, almost sole, method of travel. But railroads were losing their allure because of their monopolistic freight rate-setting and the inconvenience of their schedules. The privacy and autonomy of the automobile was not to be denied.
The Yellowstone Trail developed in parallel with the nationwide effort to improve roads. The burden of financing roads gradually moved from the local landowner and township up the levels of government until the federal government, the states, the counties and the townships shared the cost. The burgeoning number of autos resulted in a demand for roads to drive them on, first for pleasure and then for crucial societal purposes: for doctors to get to patients, for farm products to get to the railroads, and for military purposes."