Tennessee State Route 173

State Route 173 (SR 173) is a state highway in Unicoi and Carter counties in the U.S. state of Tennessee. It connects the town of Unicoi with the community of Tiger Valley.

State Route 173 marker

State Route 173
Route information
Maintained by TDOT
Length13.1 mi (21.1 km)
Major junctions
West end I-26 / US 19W / US 23 in Unicoi
  SR 107 in Unicoi
East end US 19E in Tiger Valley
CountiesUnicoi, Carter
Highway system
SR 172SR 174

Route descriptionEdit

SR 173 begins in Unicoi County at Interstate 26/U.S. Route 19W/U.S. Route 23 (I-26/US 19W/US 23) exit 32 in the town of Unicoi. It goes eastward for several blocks before turning southward onto Unicoi Drive. SR 173 follows Unicoi Drive for less than a mile to a junction with SR 107, which approaches from Erwin to the south. The merged SR 107/SR 173 goes eastward through rural mountain areas until reaching the community of Limestone Cove, where SR 107 turns southward toward the North Carolina border, and SR 173 turns northeastward through rural mountainous terrain to cross into Carter County and enter the community of Tiger Valley, where it comes to an end at US 19E. From here, US 19E continues eastward to Roan Mountain, and northwestward to Hampton.[1]

Major intersectionsEdit

UnicoiUnicoi0.000.00    I-26 / US 19W / US 23 – Johnson City, AshevilleWestern terminus; I-26/US 19W/US 23 exit 32
0.040.064Unicoi Drive – Johnson CitySR 173 turns south onto Unicoi Drive; former US 19W/US 23
1.011.63  SR 107 west (Unicoi Drive) – ErwinWestern end of SR 107 concurrency
Limestone Cove6.069.75  SR 107 east (Limestone Cove Road) – BuladeanEastern end of SR 107 concurrency
CarterTiger Valley13.1021.08  US 19E (SR 37) – Roan Mountain, Hampton, ElizabethtonEastern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi


  1. ^ Tennessee Department of Transportation (2016). Official Transportation Map (PDF) (Map). c.1:1,013,760. Nashville: Tennessee Department of Transportation. §§ B16-17. Retrieved May 20, 2016.

External linksEdit

  Media related to Tennessee State Route 173 at Wikimedia Commons