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Since Pennsylvania first introduced numbered traffic routes in 1924, a keystone symbol shape has been used, in reference to Pennsylvania being the "Keystone State". The signs originally said "Penna" (a common abbreviation for Pennsylvania at the time), followed by the route number in block-style numbering in a keystone cutout.
Route markers for Interstate 76, U.S. Route 6, Pennsylvania Route 18, and State Route 3069 System information Length 41,643 mi (67,018 km) Notes Numbers are assigned through Location Referencing System; all routes are assigned quadrant numbers, State Route X (SR X), which usually corresponded to the signed numbers of traffic routes (PA X). Traffic Routes are generally state-maintained. Highway ...
United States Numbered Highways of the Pennsylvania State Route System. Route markers for U.S. Route 6, U.S. Route 30, and U.S. Route 322. System information. Notes. All routes are assigned State Route (SR X) numbers, usually corresponding to the signed numbers. U.S. Routes are generally state-maintained.
Route markers for Interstate 83, Interstate 376, Interstate 83 Business, and Interstate 376 Business Interstate Highways highlighted in red System information Notes All routes are assigned State Route (SR X) numbers, usually corresponding to the signed numbers. Interstates are generally state-maintained. Highway names Interstates Interstate X (I-X) Business Loops: Interstate X Business (I-X ...
U.S. Route 22 (US 22) is an east–west United States Numbered Highway that stretches from Cincinnati, Ohio, in the west, to Newark, New Jersey, in the east.In Pennsylvania, the route runs for 338.20 miles (544.28 km) between the West Virginia state line in Washington County, where it is a freeway through the western suburbs of Pittsburgh, and then runs east to Easton and the Pennsylvania ...
The United States Numbered Highway System (often called U.S. Routes or U.S. Highways) is an integrated network of roads and highways numbered within a nationwide grid in the contiguous United States. As the designation and numbering of these highways were coordinated among the states, they are sometimes called Federal Highways, but the roadways ...
U.S. Route 6 Grand Army of the Republic Highway US 6 highlighted in red and alternate routes in blue Route information Maintained by PennDOT and JIBC Length 403 mi (649 km) Existed 1926–present History designated as PA 7 in 1924 Tourist routes Crawford Lakelands Scenic Byway Gateway to the Endless Mountains Scenic Byway Governor Casey Scenic Byway Major junctions West end US 6 at Ohio state ...
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.