Tennessee State Route 51

State Route 51 (SR 51) is a rural secondary north–south state highway that traverses the northwestern portion of Clay County in Middle Tennessee.^[2] It is 1.9 miles (3.1 km) long.

State Route 51
Tompkinsville Highway
SR 51 mainline in red
Route information
Maintained by TDOT
Length	1.9 mi (3.1 km)
Existed	October 1, 1923[1]–present
Major junctions
South end	SR 52 in Moss
North end	KY 163 at the Kentucky state line
Location
Country	United States
State	Tennessee
Counties	Clay
Highway system
Tennessee State Routes Interstate US State
← US 51 → SR 52

Route description

SR 51 begins at a Y-intersection with SR 52 (Clay County Highway) at Moss. Its northern end is located at the Kentucky state line where it becomes Kentucky Route 163 (KY 163) upon entry into Monroe County, Kentucky.^[2][3] SR 51 is known as “Tompkinsville Highway” for its entire length.^[4][5]

Major intersections

The entire route is in Clay County.

Location	mi	km	Destinations	Notes
Moss	0.0	0.0	SR 52 (Clay County Highway) – Celina, Nashville	Southern terminus
​	1.9	3.1	KY 163 north – Tompkinsville	Northern terminus; Kentucky state line
1.000 mi = 1.609 km; 1.000 km = 0.621 mi