| Caption: | Interstate Highway shields for Interstate 69 and Interstate 465 |
| Statehwy: | State Road X (SR X) |
| Interstate: | Interstate X (I-X) |
| Us: | U.S. Route X (US X) |
| Links: | IN |
| Map Custom: | yes |
| Map Notes: | Interstate Highways highlighted in red |
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.[1]