List of numbered highways in Tennessee

Interstate, US Route, and Primary/Secondary State Routes
System information
Notes:	maintained by TDOT
Highway names
Interstates:	Interstate XX (I-XX)
US Routes:	U.S. Highway XX (US XX)
State:	State Route XX (SR-XX)
System links
Tennessee State Routes Interstate US

The Tennessee Department of Transportation maintains and develops the highways in the state of Tennessee. Currently the state has 14,150 miles (22,772.2 km) of state-maintained roadways, including 1,073 miles (1,726.8 km) of Interstate Highways and 13,077 miles (21,045.4 km) of State Highways. All of the U.S. Routes in Tennessee have a state highway concurrent, though the state highway is hidden and only signed along the green mile marker signs that display mileage within each county. Since 1982, State Highways have been divided into primary and secondary routes. Primary State Highways are part of the Federal-aid primary highway system, whereas secondary highways are not. For the complete list of State Highways see List of state routes in Tennessee.

Interstate highways

Shield	Route Number	Length	Starting Terminus	Direction	Ending Terminus
Current interstate highways
	Interstate 24	180.16 mi (289.9 km)	I-24 (Kentucky State Line) -- Clarksville	west to east	I-75 – Chattanooga
	Interstate 26	54.5 mi (87.7 km)	US-23 / US-11W – Kingsport	west to east	I-26 / US 23 (North Carolina State Line) in Unicoi County
	Interstate 40	455.28 mi (732.7 km)	I-40 (Arkansas State Line) -- Memphis	west to east	I-40 (North Carolina State Line) near Hartford
	Interstate 55	12.28 mi (19.8 km)	I-55 (Mississippi State Line) -- Memphis	south to north	I-55/ U.S. 61 / U.S. 64 / U.S. 70 / U.S. 79 (AR State Line) -- Memphis
	Interstate 65	121.71 mi (195.9 km)	I-65 / US-31 (Alabama State Line) -- Ardmore	south to north	I-65 (Kentucky State Line) -- Mitchellville
	Interstate 75	161.86 mi (260.5 km)	I-75 (Georgia State Line) -- Chattanooga	south to north	I-75 (Kentucky State Line) -- Jellico
	Interstate 81	75.66 mi (121.8 km)	I-40 – White Pine	south to north	I-81 (Virginia State Line) -- Bristol
	Interstate 124 (hidden)	1.97 mi (3.2 km)	I-24 – Chattanooga	west to east	US-27 (at Tennessee River) – Chattanooga
	Interstate 140	11.18 mi (18.0 km)	SR-162 (Pellissippi Parkway) – Knoxville	west to east	US-129 (Airport Highway) / SR-162 (Pellissippi Parkway) – Alcoa
	Interstate 240	19.27 mi (31.0 km)	I-40 – Memphis	west to east then south to north	I-40 – Memphis (Downtown)
	Interstate 440	7.64 mi (12.3 km)	I-40 – Nashville	west to east	I-24 – Nashville
	Interstate 640	7.03 mi (11.3 km)	I-40 / I-75 – Knoxville	west to east	I-40 / US-25W – Knoxville
	Interstate 155	15.93 mi (25.6 km)	I-155 / US 412 in Dyer County	west to east	US-51 / US-412 – Dyersburg
	Interstate 275	2.98 mi (4.8 km)	I-40 / US-441 – Knoxville	south to north	I-640 / I-75 / US-25W – Knoxville
Future Interstate Highways
	Interstate 3 (proposed)		Proposed I-40 / I-75 – Knoxville	south to north	Proposed I-3 (North Carolina State Line) near Deals Gap
	I-69 (under development)		I-55 / I-69 (Mississippi State Line) -- Memphis	south to north	I-69 / US 51 (Kentucky State Line) -- South Fulton
	I-269 (under development)		I-269 (Mississippi State Line) -- Collierville	south to north	I-69 – Millington
Former Interstate Highways
	Interstate 255 (former)	5.38 mi (8.7 km)	I-55 / I-240 – Memphis	south to north	I-40 / I-240 – Memphis
	Interstate 265 (former)	2.41 mi (3.9 km)	I-40 – Nashville	south to north	I-24 / I-65 – Nashville
	Interstate 181 (former)	23.85 mi (38.4 km)	US-19W / US-23 / US-321 – Johnson City	south to north	US-11W / US-23 – Kingsport

U.S. Highways

Shield	Route Number	Length	Starting Terminus	Direction	Ending Terminus
Current U.S. Highways
	U.S. Route 11	124.86 mi (200.94 km)	US 11 (Georgia State Line) -- Chattanooga	south to north	US-11E / US-11W / US-70 – Knoxville
	U.S. Route 11W	109.16 mi (175.68 km)	US-11 / US-11E / US-70 – Knoxville	south to north	US 11W / US 421 (Virginia State Line) – Bristol
	U.S. Route 11E	120.36 mi (193.70 km)	US-11 / US-11W / US-70 – Knoxville	south to north	US 11E (Virginia State Line) – Bristol
	U.S. Route 19	11.63 mi (18.72 km)	US-11E / US-19W / US-19E – Bluff City	south to north	US 11E (Virginia State Line) / US 19 – Bristol
	U.S. Route 19W	40.69 mi (65.48 km)	US 19W (North Carolina State Line) in Unicoi County	south to north	US-11E / US-19 / US-19E – Bluff City
	U.S. Route 19E	30.98 mi (49.86 km)	US 19E (North Carolina State Line) near Roan Mountain	south to north	US-11E / US-19 / US-19W – Bluff City
	U.S. Route 23	57.38 mi (92.34 km)	I-26 / US 23 (North Carolina State Line) in Unicoi County	south to north	US 23 (Virginia State Line) -- Kingsport
	U.S. Route 25	20.14 mi (32.41 km)	US 25 / US 70 (North Carolina State Line) near Del Rio	south to north	US-25W / US-25E / US-70 – Newport
	U.S. Route 25W	110.03 mi (177.08 km)	US-25 / US-25E / US-70 – Newport	south to north	US 25W (Kentucky State Line) -- Jellico
	U.S. Route 25E	63.24 mi (101.77 km)	US-25 / US-25W / US-70 – Newport	south to north	US 25E (Kentucky State Line) -- Cumberland Gap
	U.S. Route 27	144.8 mi (233.0 km)	US 27 (Georgia State Line) -- Chattanooga	south to north	US 27 (Kentucky State Line) -- Winfield
	U.S. Route 31	93.01 mi (149.69 km)	I-65 / US-31 (Alabama State Line) -- Ardmore	south to north	US-31W / US-31E / US-41 / US-431 – Nashville
	U.S. Route 31A	76.94 mi (123.82 km)	US-31 – Pulaski	south to north	I-40 / US-41 / US-41A / US-70S – Nashville
	U.S. Route 31W	36.08 mi (58.07 km)	US-31 / US-31E / US-41 / US-431 – Nashville	south to north	US 31W (Kentucky State Line) -- Portland
	U.S. Route 31E	50.38 mi (81.08 km)	US-31 / US-31W / US-41 / US-431 – Nashville	south to north	US 31E / US 231 (Kentucky State Line) near Westmoreland
	U.S. Route 41	194.58 mi (313.15 km)	US 41 / US 76 (Georgia State Line) -- East Ridge	south to north	US 41 (Kentucky State Line) near Adams
	U.S. Route 41A	157.87 mi (254.07 km)	US-41 – Monteagle	south to north	US 41A (Kentucky State Line) -- Clarksville
	U.S. Route 43	120.39 mi (193.75 km)	US-43 (Alabama State Line) -- Saint Joseph	south to north	US-31 / US-412 – Columbia
	U.S. Route 45	(I) 60.95 mi (98.09 km) (II) 0.45 mi (0.72 km)	(I) US 45 (Mississippi State Line) -- Guys (II) US-45W / US-45E / US-51 – South Fulton	south to north	(I) US-45W / US-45E – Three Way (II) US 45 / US 51 (Kentucky State Line) -- South Fulton
	U.S. Route 45W	62.33 mi (100.31 km)	US-45 / US-45E – Three Way	south to north	US-45 / US-45E / US-51 – South Fulton
	U.S. Route 45E	61.23 mi (98.54 km)	US-45 / US-45W – Three Way	south to north	US-45 / US-45W / US-51 – South Fulton
	U.S. Route 51	135.18 mi (217.55 km)	US 51 (Mississippi State Line) -- Memphis	south to north	US 45 / US 51 (Kentucky State Line) -- South Fulton
	U.S. Route 58	0.8 mi (1.3 km)	US-25E – Cumberland Gap	west to east	US 58 (Virginia State Line) -- Cumberland Gap
	U.S. Route 61	11.82 mi (19.02 km)	US 61 (Mississippi State Line) -- Memphis	south to north	I-55 / U.S. 61 / U.S. 64 / U.S. 70 / U.S. 79 (AR State Line) -- Memphis
	U.S. Route 64	379.52 mi (610.78 km)	I-55 / U.S. 61 / U.S. 64 / U.S. 70 / U.S. 79 (AR State Line) -- Memphis	west to east	US 64 / US 74 (North Carolina State Line) near Ducktown
	U.S. Route 70	478.48 mi (770.04 km)	I-55 / U.S. 61 / U.S. 64 / U.S. 70 / U.S. 79 (AR State Line) -- Memphis	west to east	US 25 / US 70 (North Carolina State Line) near Del Rio
	U.S. Route 70A	58.12 mi (93.54 km)	US-70 / US-79 – Brownsville	west to east	US-70 – Huntingdon
	U.S. Route 70N	87.24 mi (140.40 km)	US-70 – Lebanon	west to east	US-70 – Crossville
	U.S. Route 70S	112.96 mi (181.79 km)	US-70 – Nashville	west to east	US-70 – Sparta
	U.S. Route 72	(I) 25.63 mi (41.25 km) (II) 35.02 mi (56.36 km)	(I) US-51 / US-64 / US-70 / US-79 – Memphis (II) US-72 (Alabama State Line) -- South Pittsburgh	west to east	(I) US 72 (Mississippi State Line) -- Collierville (II) US-41 – Chattanooga
	U.S. Route 74	62.83 mi (101.12 km)	I-24 / I-75 – Chattanooga	west to east	US 64 / US 74 (North Carolina State Line) near Ducktown
	U.S. Route 76	9.46 mi (15.22 km)	US-127 – Chattanooga	west to east	US 41 / US 76 (Georgia State Line) -- East Ridge
	U.S. Route 78	14.62 mi (23.53 km)	SR-14 – Memphis	west to east	US 78 (Mississippi State Line) -- Memphis
	U.S. Route 79	209.83 mi (337.69 km)	I-55 / U.S. 61 / U.S. 64 / U.S. 70 / U.S. 79 (AR State Line) -- Memphis	south to north	US 79 (Kentucky State Line) near Clarksville
	U.S. Route 127	136.67 mi (219.95 km)	US-76 – Chattanooga	south to north	US 127 (Kentucky State Line) -- Static
	U.S. Route 129	51.69 mi (83.19 km)	US 129 (North Carolina State Line) near Tallassee	south to north	I-40 – Knoxville
	U.S. Route 231	121.15 mi (194.97 km)	US-231 / US-431 (Alabama State Line) near Fayetteville	south to north	US 31E / US 231 (Kentucky State Line) near Westmoreland
	U.S. Route 321	194.50 mi (313.02 km)	I-40 – Oak Ridge	south to north	US 321 (North Carolina State Line) near Butler
	U.S. Route 411	120.84 mi (194.47 km)	US 411 (Georgia State Line) in Polk County	south to north	US-25W / US-70 – Newport
	U.S. Route 412	181.93 mi (292.79 km)	I-155 / US 412 (Missouri State Line) near Dyersburg	west to east	I-65 – Columbia
	U.S. Route 421	41.74 mi (67.17 km)	US 421 (North Carolina State Line) -- Trade	south to north	US 421 (Virginia State Line) – Bristol
	U.S. Route 431	130.68 mi (210.31 km)	US-231 / US-431 (Alabama State Line) near Fayetteville	south to north	US 431 (Kentucky State Line) near Springfield
	U.S. Route 441	83.28 mi (134.03 km)	US 441 (North Carolina State Line) -- Newfound Gap	south to north	US-25W – Lake City
	U.S. Route 641	51.27 mi (82.51 km)	I-40 – Holladay	south to north	US 641 (Kentucky State Line) near Puryear
Former U.S. Highways

See also

• Tennessee portal
• U.S. Roads portal