| Interstate Highways of the State Highway System | |
|---|---|
Highway markers for Interstate 80 and 680
| |
Nebraska's Interstate highlighted in red
| |
| System information | |
| Maintained by NDOT | |
| Length | 482.69 mi[1][2] (776.81 km) |
| Formed | June 29, 1956 (1956-06-29) |
| Highway names | |
| Interstates | Interstate X (I-X) |
| System links | |
The Interstate Highways in Nebraska are the segments of the national Interstate Highway System that are owned and maintained by the U.S. state of Nebraska, totaling 482 miles (776 km).[2] The longest of these, by far, is Interstate 80 (I-80) at a length just over 455 miles (732 km).[1] After the system was created in 1956, the state department of roads began construction on its Interstates immediately and upon completion of I-80 in 1964 was the first state to complete its mainline Interstate.[3] With the completion of Interstate 129 in 1977, Nebraska completed its contribution to the Interstate Highway System.[4]
The Nebraska Department of Transportation is responsible for the daily maintenance and operations of the State Highway System, which includes the Interstate Highways in Nebraska. These highways are built to Interstate Highway standards, as such, they're all freeways with minimum requirements for full control of access, design speeds and other characteristics. Speed limits along the Interstates within Nebraska range from 60 miles per hour in the Omaha Metro area to 75 miles per hour along the majority of I-80 outside of Lincoln and Omaha.[5]
| Number | Length (mi) | Length (km) | Southern or western terminus | Northern or eastern terminus | Formed | Removed | Notes | |
|---|---|---|---|---|---|---|---|---|
 I-76
|
3.15 | 5.07 | I-76 at the Colorado state line | I-80inDeuel County | 01976-01-011976 | current | ||
 I-80
|
455.32 | 732.77 | I-80atPine Bluffs, Wyo. | I-80atOmaha | 01957-01-011957 | current | ||
 I-80S
|
3.15 | 5.07 | I-80S at the Colorado state line | I-80inDeuel County | 01969-01-011969 | 01976-01-011976 | Became I-76 | |
 I-129
|
3.21 | 5.17 | US 20 / US 75 / US 77inSouth Sioux City | I-129 / US 20 / US 75atSioux City, Iowa | 01976-01-011976 | current | ||
 I-180
|
3.47 | 5.58 | US 34inLincoln | I-80 / US 34 / US 77 in Lincoln | 01964-01-011964 | current | ||
 I-280
|
13.32 | 21.44 | I-80inOmaha | I-280 at the Iowa state line | 01958-01-011958 | 01965-01-011965 | Became I-680 because I-280 already existed in Iowa | |
 I-480
|
4.15 | 6.68 | I-80 / US 75inOmaha | I-480 / US 6inCouncil Bluffs, Iowa | 01966-01-011966 | current | ||
 I-580
|
3.21 | 5.17 | I-480inOmaha | Lake Street in Omaha | 01976-01-01c. 1976 | 01982-01-01c. 1982 | I-580 number removed in early 1980s | |
 I-680
|
13.32 | 21.44 | I-80inOmaha | I-680 at the Iowa state line | 01966-01-011966 | current | ||
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