Tennessee State Route 100

State Route 100
State Route 100
	SR 100 highlighted; primary in red, secondary in blue
Route information
	Maintained by TDOT
Length	158.31 mi (254.78 km)
Major junctions
West end	; US 64 / US 64 Bus. in Whiteville
	SR 18 near Toone; US 45 in Henderson; SR 22 near Reagan; US 641 in Decaturville; US 412 in Perryville; I-840 near Bon Aqua; Natchez Trace Parkway in Pasquo;
East end	US 70S in Nashville
Location
Country	United States
State	Tennessee
Counties	Hardeman, Chester, Henderson, Decatur, Perry, Hickman, Williamson, Davidson
Highway system
	Tennessee State Routes; Interstate; US; State;

State Route 100 (SR 100) is a west–east state highway in both West Tennessee and Middle Tennessee that connects Whiteville with Nashville. It is 158.31 mi (254.8 km) long.