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There is no rule preventing the same numbering between state roads, U.S. routes, and Interstate highways, although traditionally, INDOT has avoided state road numbers which are the same as those on U.S. routes within the state. Indiana has a mileage cap of 12,000 miles (19,000 km) for its highway system. [1]
State Roads in the U.S. state of Indiana are numbered rationally: in general, odd one-digit and two-digit highways are north–south highways, numbers increasing toward the west; even one-digit and two-digit highways are east-west highways, numbers increasing toward the south, the opposite of the Interstate Highway System.
Number Length (mi) [1] Length (km) Southern or western terminus Northern or eastern terminus Formed Removed Notes US 6: 149.490: 240.581 I-80/I-94/US 6 at Hammond: US 6 near Butler: 1931 [2] current Grand Army of the Republic Highway [2] US 12: 46.258: 74.445 US 12/US 20/US 41 at Whiting: US 12 at Michiana Shores: 1926 [3] current
Interstate Highways are owned and maintained by the Indiana Department of Transportation (INDOT) unless it is a toll road. The system was authorized by the Federal-Aid Highway Act of 1956, which provided federal funds for construction of limited access highways. Indiana's initial set of seven Interstate Highways were announced in September 1957 ...
U.S. Route 231 (US 231) is the longest numbered highway in Indiana, covering over 284 miles (457 km).It is a main north–south highway in the western part of the state. The southern terminus of US 231 in Indiana is at the Kentucky state line and the northern terminus is at US 41 just south of St. Joh
These primary highways are assigned one- or two-digit route numbers, whereas their associated auxiliary Interstate Highways receive three-digit route numbers. Typically, odd-numbered Interstates run south–north, with lower numbers in the west and higher numbers in the east; even-numbered Interstates run west–east, with lower numbers in the ...
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.
Pages in category "State highways in Indiana" The following 180 pages are in this category, out of 180 total. ... Numbered highways in Indiana; 0–9. Indiana State ...