. "North" . . "59433.1"^^ . . . "78" . "South" . "State Route 78 (abbreviated SR 78) is a 36.93-mile (59.43 km) long primary state highway in northwestern Tennessee, USA. This highway carries a dual primary and secondary designation, however, the majority of this highway is signed as a Primary State Highway. The only portion of SR 78 designated as secondary is between its southern terminus at SR 104 to US 51 in Dyersburg."@en . "Dual" . . . . "Lake Road"@en .