| Interstate 81 | ||||
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| Route information | ||||
| Maintained by TDOT | ||||
| Length: | 75.66 mi[1] (121.76 km) | |||
| Major junctions | ||||
| South end: | I-40 near Dandridge | |||
| US-25E near Morristown I-26 / US-23 near Kingsport US-11W near Bristol |
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| North end: | I-81 at Bristol | |||
| Highway system | ||||
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Main route of the Interstate Highway System Tennessee State Routes
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Interstate 81 is an 824-mile (1,326 km) long expressway stretching from Dandridge, Tennessee northward to the Thousand Islands Bridge at the United States-Canada border near Fishers Landing, New York. In Tennessee, Interstate 81 runs for 75 miles (121 km) from its southern terminus at Interstate 40 in Dandridge to the Virginia state line in Bristol.
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Interstate 81 begins in Tennessee at Interstate 40 in Dandridge. I-81 parallels the Appalachian Mountains for most of Tennessee and Virginia. At mile marker 8, I-81 meets the eastern half of U.S. Route 25: U.S. Route 25E south of Morristown. I-81 doesn't go through either Johnson City or Kingsport; but at mile marker 57, I-81 meets Interstate 26 and U.S. Route 23 which go to Kingsport and Johnson City. At mile marker 75, I-81 leaves Tennessee and enters the commonwealth of Virginia.
| County | Location | Mile | # | Destinations | Notes |
|---|---|---|---|---|---|
| Jefferson | 0.0 | 0A-B | I-40 – Knoxville, Asheville, N.C. | Signed as Exits 0A (east) & 0B (west) | |
| White Pine | 4.4 | 4 | SR-341 – White Pine | ||
| Hamblen | Morristown | 8.6 | 8 | US-25E – White Pine, Morristown | No class 1 explosives in Cumberland Gap Tunnel, without escort. |
| 12.4 | 12 | SR-160 – Lowland, Morristown | |||
| 15.3 | 15 | SR-340 (Fish Hatchery Rd.) – Morristown | Access to Copper Airport. | ||
| Greene | Greeneville | 23.1 | 23 | US-11E – Bulls Gap, Greeneville, Rogersville, Morristown | Access to Tusculum College. |
| 30.2 | 30 | SR-70 to SR-66 – Rogersville, Greeneville | |||
| 36.2 | 36 | SR-172 (Baileyton Rd.) – Baileyton, Greeneville | |||
| 43.9 | 44 | Jearoldstown Rd | |||
| Washington | Fall Branch | 50.5 | 50 | SR-93 / SR-81 – Fall Branch, Jonesborough | |
| Sullivan | Kingsport | 56 | Tri-Cities Crossing | ||
| 57.7 | 57 | I-26 / US-23 – Johnson City, Kingsport | |||
| 59.4 | 59 | SR-36 (Ft. Henry Dr.) – Johnson City, Kingsport | |||
| 63.5 | 63 | SR-357 (Airport Parkway) to SR-75 | Access to Tri-Cities Regional Airport. | ||
| 66.1 | 66 | SR-126 (Memorial Blvd.) – Blountville, Kingsport | |||
| Blountville | 69.6 | 69 | SR-394 – Blountville | Access to Bristol Motor Speedway. | |
| Bristol | 74.8 | 74 | US-11W (W. State St.) – Kingsport, Bristol | Lee Highway. Signed as Exit 74A & 74B. | |
| Virginia state line. I-81 continues into Virginia. | |||||
| Interstate 81 | ||
|---|---|---|
| Previous state: Terminus |
Tennessee | Next state: Virginia |