Interstate Highways are owned and maintained by the
Indiana Department of Transportation
The Indiana Department of Transportation (INDOT) is a governmental agency of the U.S. state of Indiana charged with maintaining and regulating transportation and transportation related infrastructure such as state owned airports, List of number ...
(INDOT) unless it is a toll road.
The system was authorized by the
Federal-Aid Highway Act of 1956
The Federal-Aid Highway Act of 1956, also known as the National Interstate and Defense Highways Act, was enacted on June 29, 1956, when President Dwight D. Eisenhower signed the bill into law. With an original authorization of $25 billion (eq ...
, which provided federal funds for construction of limited access highways. Indiana's initial set of seven Interstate Highways were announced in September 1957.
Primary Interstates
Auxiliary Interstates
See also
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References
{{DEFAULTSORT:Interstate Highways in Indiana
Interstate Highways in Indiana
Lists of roads in Indiana