# List of Interstate Highways in Indiana

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.

## Primary Interstates

| Number | Length (mi) | Length (km) | Southern or western terminus | Northern or eastern terminus | Formed | Removed | Notes |
| I-64 | 123.33 | 198.48 | I-64 at Illinois state line west of Griffin | I-64 at Kentucky state line at New Albany | 01956-01-011956 | current | |
| I-65 | 261.27 | 420.47 | I-65 at Kentucky state line at Jeffersonville | US 12/US 20 in Gary | 01956-01-011956 | current | Formerly the longest Interstate in Indiana |
| I-69 | 342 | 550 | US 41/Veterans Memorial Parkway in Evansville | I-69 at Michigan state line northwest of Fremont | 01956-01-011956 | current | Longest Interstate in Indiana |
| I-70 | 156.60 | 252.02 | I-70 at Illinois state line west of Terre Haute | I-70 at Ohio state line at Richmond | 01956-01-011956 | current | |
| I-74 | 171.54 | 276.07 | I-74 at Illinois state line west of Covington | I-74 at Ohio state line at West Harrison | 01960-01-011960 | current | |
| I-80 | 151.56 | 243.91 | I-80/I-94 at Illinois state line at Munster | I-80/I-90 at Ohio state line east of Angola | 01956-01-011956 | current | Indiana Toll Road from I-80/I-90/I-94 split in NW Indiana to Ohio state line |
| I-90 | 156.28 | 251.51 | I-90 at Illinois state line in Hammond | I-80/I-90 at Ohio state line east of Angola | 01956-01-011956 | current | Indiana Toll Road |
| I-94 | 46.13 | 74.24 | I-80/I-94 at Illinois state line in Munster | I-94 at Michigan state line northeast of Michigan City | 01956-01-011956 | current | |

## Auxiliary Interstates

| Number | Length (mi) | Length (km) | Southern or western terminus | Northern or eastern terminus | Formed | Removed | Notes |
| I-164 | 21.39 | 34.42 | US 41/Veterans Memorial Parkway in Evansville | I-64/I-69 northwest of Elberfeld | 01968-01-011968 | 02014-01-012014 | Redesignated as I-69 in 2014 |
| I-165 | — | — | I-70/I-65 "North Split" interchange in downtown Indianapolis | 38th Street in Indianapolis | 01978-01-011978 | 01981-01-011981 | Cancelled; instead, lanes were added on I-70 from the North Split to I-465 on the eastside, and on I-465 to the I-69 interchange on the northside. |
| I-265 | 13.11 | 21.10 | I-64/US 150 in New Albany | I-265 at Kentucky state line | 01977-01-011977 | current | Part of outer beltway around Louisville, Kentucky |
| I-275 | 3.16 | 5.09 | I-275 at Kentucky state line (Ohio River) | I-275 at Ohio state line | 01962-01-011962 | current | Part of a beltway around Cincinnati, Ohio |
| I-294 | 15 | 24 | I-80/I-90/I-294/US 6/US 41 Toll at Illinois state line | I-80/I-90/I-94/Indiana Toll Road in Lake Station | 01958-01-011958 | 01965-01-011965 | Formerly routed along the entirety of the Borman Expressway (I-80/I-90 [now I-94]); only I-294 in Illinois remains |
| I-465 | 52.79 | 84.96 | Beltway around Indianapolis | Beltway around Indianapolis | 01959-01-011959 | current | Indianapolis beltway |
| I-469 | 30.83 | 49.62 | I-69 south of Fort Wayne | I-69 north of Fort Wayne | 01989-01-011989 | current | Southern, eastern, and northern bypass around Fort Wayne |
| I-865 | 4.72 | 7.60 | I-65 near Royalton | I-465 south of Zionsville | 02002-01-012002 | current | Connector between I-465 and I-65 in northwest of Indianapolis; renumbered from I-465 to eliminate three-way intersection of I-465 |
| Former Proposed and unbuilt ||||||||