Tennessee State Route 166

State Route 166 (SR 166) is a north–south state highway in southernMiddle Tennessee, traversingGiles andMaury counties.

State Route 166

SR 166 highlighted in red

Route information

Maintained byTDOT

Length

51.60 mi (83.04 km)

Major junctions

South end

SR 127 at theAlabama state line inBethel

Major intersections

US 64 nearPulaski
SR 11 in Pulaski
SR 15 in Pulaski
US 43 inMount Pleasant

North end

US 412 inHampshire

Location

Country

United States

State

Tennessee

Counties

Giles,Maury

Highway system

Tennessee State Routes

←

SR 165

→

SR 167

Route description

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Giles County

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Alabama State Route 127 becomesSR 166 at theAlabama state line in theBethel community of southernGiles County. SR 166 goes north as a 2-lane highway and intersectsSR 273, and then goes north through rural and hilly terrain before coming to an intersection withUS 64 and enteringPulaski. SR 166 then becomes concurrent withSR 11, widens to an undivided 4-lane highway, and crosses a bridge overRichland Creek to enter downtown and come to an intersection withSR 15, where SR 166 splits from SR 11 to follow SR 15 west as a 2-lane. They then leave downtown and comes to another intersection with US 64, where they become concurrent with US 64 and SR 15 becomes unsigned. They then leave Pulaski and continue west as a 4-lane undivided highway for a little over a mile SR 166 splits off from US 64/SR 15 and turns northward as a 2-lane highway. SR 166 then passes through rural areas before passing throughCampbellsville and having an intersection withSR 245. It then continues north to cross intoMaury County.

Maury County

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SR 166 continues northwest to enterMount Pleasant, where it intersects and becomes concurrent withSR 243. They then enter downtown, where SR 166 splits off and goes west to have an intersection withUS 43 (SR 6). SR 166 then turns northwest to leave Mount Pleasant and pass through rural areas before enteringHampshire and coming to an end at an intersection withUS 412 (SR 99).

Major intersections

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County	Location	mi	km	Destinations	Notes
Giles	Bethel	0.0	0.0	SR 127 south –Athens	Southern terminus at theAlabama state line
				SR 273 east (Case Road) –Prospect,Elkton	Western terminus of SR 273
	Pulaski			US 64 (Lawrenceburg Highway) toI-65 –Lawrenceburg,Fayetteville
				SR 11 south (Minor Hill Highway) –Minor Hill	Southern end of SR 11 concurrency
				C. E. Depriest Bridge overRichland Creek
				SR 15 east /SR 11 north (W College Street) – downtown,Fayetteville	Northern end of SR 11 concurrency; southern end of SR 15 concurrency
				US 64 east (Lawrenceburg Highway) toI-65 –Fayetteville	Southern end of US 64 concurrency; SR 15 becomes unsigned
				US 64 west (Lawrenceburg Highway/SR 15 west) –Fayetteville	Northern end of US 64 and unsigned SR 15 concurrency
				SR 245 north (Yokley Creek Road) –Columbia	Southern terminus of SR 245
Maury	Mount Pleasant			SR 243 south (S Main Street) –Summertown,Ethridge,Lawrenceburg	Southern end of SR 243 concurrency; former US 43
				SR 243 north (N Main Street) –Columbia	Northern end of SR 243 concurrency; former US 43; provides access toMaury County Airport
				US 43 (Lawrenceburg Highway/SR 6) –Lawrenceburg,Columbia	Interchange under construction
	Hampshire	51.6	83.0	US 412 (Hampshire Pike/SR 99) –Columbia,Hohenwald	Northern terminus
1.000 mi = 1.609 km; 1.000 km = 0.621 mi Concurrency terminus