   Standard US Highway shields | |
| System information | |
|---|---|
| Notes | Indiana Routes are generally state-maintained. |
| Highway names | |
| Interstates | Interstate X (I-X) |
| US Highways | U.S. Route X (US X) |
| State | State Road X (SR X) |
| System links | |
| |
The U.S. Highways in Indiana are those sections of United States Numbered Highways owned and maintained by the Indiana Department of Transportation (INDOT).
| 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 | Iron Brigade Highway [4] | |
 US 20 | 155.734 | 250.630 | US 12/US 20/US 41 at Whiting | US 20 near Angola | 1926 [5] | current | ||
 US 24 | 166.846 | 268.513 | US 24/US 52 near Kentland | US 24 near Fort Wayne | 1926 [5] | current | ||
 US 27 | 117.765 | 189.524 | US 27 near Liberty | I-69/US 24/US 30 at SR 3 in Fort Wayne | 1926 [5] | current | Previously extended northward into Michigan [5] | |
 US 30 | 156.217 | 251.407 | US 30 at Dyer | US 30 near Fort Wayne | 1926 [5] | current | Lincoln Highway | |
 US 31 | 266.02 | 428.12 | US 31 at Clarksville | US 31 near South Bend | 1926 [5] | current | ||
 US 31E | — | — | US 31E at Clarksville | US 31 in Sellersburg | 1937 | 1980 | Replaced by US 31 from Sellersburg to the Kentucky state line | |
 US 31W | — | — | US 31W/US 150 at New Albany | US 31 in Sellersburg | 1937 | 1980 | Replaced by SR 311 | |
 US 33 | 106.217 | 170.940 | US 33 near Decatur | US 20 in Elkhart | 1937 | current | Previously extended into Michigan | |
 US 35 | 206.716 | 332.677 | I-70/US 35 near Richmond | US 20 in Michigan City | 1934 | current | ||
 US 36 | 138.99 | 223.68 | US 36 near Dana | US 36 near Lynn | 1926 [5] | current | ||
 US 40 | 159.321 | 256.402 | US 40 near Liggett | US 40 near Richmond | 1926 [5] | current | National Road | |
 US 41 | 279.817 | 450.322 | US 41 at Evansville | US 12/US 20/US 41 at Whiting | 1926 [5] | current | ||
 US 50 | 171.38 | 275.81 | US 50 at Vincennes | US 50 near Lawrenceburg | 1926 [5] | current | ||
 US 52 | 202 | 325 | US 24/US 52 near Kentland | I-74/US 52 at Ohio state line | 1926 [5] | current | ||
 US 131 | 0.643 | 1.035 | I-80/I-90 (Indiana Toll Road) near Middlebury | US 131 near Middlebury | 1961 | current | ||
 US 136 | 74.930 | 120.588 | US 136 near Foster | I-74/I-465 in Speedway | 1952 | current | ||
 US 150 | 177.17 | 285.13 | US 150 near West Terre Haute | I-64/US 150 at New Albany | 1926 | current | ||
 US 152 | 168 | 270 | US 36/US 40/US 52 in Indianapolis | US 41 in St. John | 1934 | 1938 | Replaced by US 231 | |
 US 224 | 39.377 | 63.371 | US 24 in Huntington | US 224 near Decatur | 1934 | current | ||
 US 231 | 284.277 | 457.499 | US 231 at Rockport | US 41 in St. John | 1954 [6] | current | ||
 US 421 | 255.065 | 410.487 | US 421 near Madison | US 20 in Michigan City | 1951 | current | ||
 US 460 | — | — | Illinois state line | US 31E/US 460 at Clarksville | 1947 | 1977 | Largely replaced by I-64, SR 62, and SR 66 | |
 US 641 | — | — | US 41/US 641 at the Kentucky state line | US 41/US 460/SR 62/SR 66 in Evansville | 1955 | 1971 | Replaced by US 41 | |
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| Number | Length (mi) | Length (km) | Southern or western terminus | Northern or eastern terminus | Formed | Removed | Notes | |
|---|---|---|---|---|---|---|---|---|
 US 6 Bus. | — | — | Illinois-Indiana state line | Lake Station | — | — | ||
| US 6 Bus. | — | — | — | — | — | — | Served Bremen | |
 US 12 Toll | — | — | Illinois-Indiana state line | Hammond | — | — | ||
| US 20 Toll Bus. | — | — | Illinois-Indiana state line | Hammond | — | — | ||
 US 20 Alt. | — | — | Tremont | Michigan City | — | — | ||
| US 20 Bus. | — | — | South Bend | Mishawaka | — | — | ||
 US 20 Byp. | — | — | South Bend | Elkhart | — | — | ||
 US 20 Truck | — | — | Osceola | Elkhart | — | — | ||
| US 24 Bus. | — | — | Logansport | Richvalley | — | — | ||
| US 24 Bus. | — | — | — | — | — | — | Serves Peru | |
| US 24 Bus. | — | — | — | — | — | — | Serves Wabash | |
| US 24 Truck | — | — | — | — | — | — | Served Fort Wayne | |
| US 27 Truck | — | — | — | — | — | — | Served Fort Wayne | |
 US 31A | — | — | US 31/US 50 near Seymour | US 31 in Columbus | 1939 | 1981 | Replaced by SR 11 | |
| US 31 Byp. | — | — | — | — | — | — | Served Kokomo | |
| US 31 Bus. | — | — | — | — | — | — | Serves Peru | |
| US 31 Alt. | — | — | — | — | — | — | Served Plymouth | |
| US 31 Bus. | — | — | — | — | — | — | Serves Plymouth | |
| US 31 Bus. | — | — | — | — | — | — | Serves South Bend | |
| US 31 Byp. | — | — | — | — | — | — | Served South Bend | |
| US 33 Bus. | — | — | — | — | — | — | Served Fort Wayne | |
| US 33 Truck | — | — | — | — | — | — | Served Fort Wayne | |
| US 41 Bus. | — | — | — | — | — | — | Served Terre Haute | |
| US 41 Bus. | — | — | — | — | — | — | Serves Vincennes | |
| US 41 Bus. | — | — | — | — | — | — | Serves Princeton | |
| US 41 Bus. | — | — | — | — | — | — | Serves Evansville | |
| US 50 Bus. | — | — | — | — | — | — | Served Vincennes | |
| US 50 Bus. | — | — | — | — | — | — | Served Washington | |
| US 50 Bus. | — | — | — | — | — | — | Serves Bedford | |
| US 52 Bus. | — | — | — | — | — | — | Serves Fowler | |
| US 52 Bus. | — | — | — | — | — | — | Served Lafayette | |
 US 112S | — | — | Rolling Prairie | Michigan state line | 1933 | 1934 | ||
 US 231 Byp. | — | — | — | — | — | — | Served Lafayette | |
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The Dwight D. Eisenhower National System of Interstate and Defense Highways, commonly known as the Interstate Highway System or the Eisenhower Interstate System, is a network of controlled-access highways that forms part of the National Highway System in the United States. The system extends throughout the contiguous United States and has routes in Hawaii, Alaska, and Puerto Rico.
The United States Numbered Highway System 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 were built and have always been maintained by state or local governments since their initial designation in 1926.
U.S. Route 224 (US 224) is a spur of US 24 that runs through the states of Indiana, Ohio and Pennsylvania. It currently runs for 289 miles (465 km) from US 24 in Huntington, Indiana, east to US 422 Business and Pennsylvania Route 18 (PA 18) in New Castle, Pennsylvania. It goes through the cities of Canfield, Ohio, Akron, Ohio, and Findlay, Ohio. In Northeast Ohio, US 224 is located a short distance north of the Western Reserve's southern boundary.
U.S. Route 730 (US 730) is an east–west United States Highway, of which all but 6.08 miles of its 41.78 miles are within the state of Oregon. The highway starts in rural Morrow County in Eastern Oregon at an interchange with Interstate 84 (I-84) and US 30, located east of the city of Boardman. US 730 travels east along the Columbia River as a continuation of Columbia River Highway No. 2 into Umatilla County, intersecting I-82 and US 395 in the city of Umatilla. US 730 and US 395 form a short concurrency within the city before the highways part, with US 730 continuing northeast into Washington. The highway travels through rural Walla Walla County and ends at an intersection with US 12 south of Wallula.
U.S. Route 12 (US 12) is a part of the United States Numbered Highway System that runs from Aberdeen, Washington, to Detroit, Michigan. In the U.S. state of Indiana, it is part of the state road system. US 12 enters the state concurrent with US 20 and US 41 in Whiting. The 46.258 miles (74.445 km) of US 12 that lie within Indiana serve as a major conduit. Some of the highway is listed on the National Highway System (NHS). Various sections are rural two-lane highway, urbanized four-lane undivided highway, and one-way streets. The easternmost community along the highway is Michiana Shores at the Michigan state line.
U.S. Route 30 (US 30) is a road in the United States Numbered Highway System that runs from Astoria, Oregon, to Atlantic City, New Jersey. In Indiana, the route runs from the Illinois state line at Dyer to the Ohio state line east of Fort Wayne and New Haven. The 155.96 miles (250.99 km) of US 30 that lie within Indiana serve as a major conduit. The entire length of U.S. Route 30 in Indiana is included in the National Highway System (NHS). The highway includes four-lane, rural sections, an urbanized, four-lane divided expressway, and several high-traffic, six-lane freeway areas. First designated as a US Highway in 1926, US 30 replaced the original State Road 2 (SR 2) and SR 44 designation of the highway which dated back to the formation of the Indiana State Road system. A section of the highway originally served as part of the Lincoln Highway. Realignment and construction projects have expanded the highway to four lanes across the state, and the road is now part of a long stretch of US 30 from New Lenox, Illinois, to Canton, Ohio, where the road has at least four lanes. There are over 40 traffic signals between I-65 at Merrillville and I-69 at Fort Wayne.
