. "20" . "TN" . . . . . "State Route 20 (abbreviated SR 20) is a 143.04-mile (230.20 km) long west\u2013east primary state route beginning in Dyersburg and ending near Summertown. SR 20 is unsigned and overlapped with US 412, except a short section between Hohenwald and Summertown."@en . . . . "West" . . . . . . . . . . "230201.0"^^ . . "East" .