Tennessee State Route 20

State Route 20
State Route 20
	SR 20; primary in red, unsigned in green
Route information
	Maintained by TDOT
Length	143.04 mi (230.20 km)
Existed	October 1, 1923–present
Major junctions
West end	US 51 / US 412 / SR 211 in Dyersburg
	US 70A / US 79 near Bells; I-40 in Jackson; ; US 45 Byp. in Jackson; US 45 in Jackson; US 70 in Jackson; US 412 in Hohenwald;
East end	US 43 in Summertown
Location
Country	United States
State	Tennessee
Counties	Dyer, Crockett, Madison, Henderson, Decatur, Perry, Lewis, Lawrence, Maury
Highway system
	Tennessee State Routes; Interstate; US; State;

State Route 20 (SR 20) is a 143.04-mile (230.20 km) long east–west primary state highway that begins in Dyersburg and ending near Summertown. SR 20 is unsigned and concurrent with U.S. Route 412 (US 412) for its entire length, except for a short section between Hohenwald and Summertown. Along its route, SR 20 traverses parts of both Middle Tennessee and West Tennessee.