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A highway shield or route marker is a sign denoting the route number of a ... National Highway (black-on-white squared-off bullet), State Highway (blue bullet) and ...
Major revisions of the U.S. Route shield from 1926 to 1971 (last revision) The U.S. Route shield is the highway marker used for United States Numbered Highways.Since the first U.S. Route signs were installed in 1926, the general idea has remained the same, but many changes have been made in the details.
In 1918, Wisconsin became the first state to number its highways in the field followed by Michigan the following year. [1] In 1926 the American Association of State Highway Officials (AASHO) established and numbered interstate routes (United States Numbered Highways), selecting the best roads in each state that could be connected to provide a national network of federal highways.
1961 version of the U.S. Route shield. The Federal Aid Highway Act of 1956 appropriated funding for the Interstate Highway System, to construct a vast network of freeways across the country. By 1957, AASHO had decided to assign a new grid to the new routes, to be numbered in the opposite directions as the U.S. Highway grid.
The Pershing Map FDR's hand-drawn map from 1938. The United States government's efforts to construct a national network of highways began on an ad hoc basis with the passage of the Federal Aid Road Act of 1916, which provided $75 million over a five-year period for matching funds to the states for the construction and improvement of highways. [8]
The Interstate Highways on the island of Oʻahu, Hawaii are signed with the standard Interstate Highway shield, with the letter "H-" prefixed before the number. They are fully controlled-access routes built to the same standards as the mainland Interstate Highways.
In addition to the state scenic highways system, several routes in Washington are designated as National Scenic Byways and All-American Roads. [23] Cascade Loop National Scenic Byway (2021) [24] Chinook Scenic Byway (1998), an All-American Road [25] Coulee Corridor Scenic Byway (2005) [26] International Selkirk Loop (2005), an All-American Road ...
Routes maintained by VTrans are classified by the agency as "state-maintained highways" and signed using Vermont's green route shields. Routes maintained by the town are classified as "town-maintained routes" and signed using the national circular highway shield. Five routes in the system have both state- and town-maintained sections.