Tennessee State Route 302State Route 302 is a north–south state highway in Rhea County, Tennessee.Route descriptionSR 302 begins in Old Washington at an intersection with SR 30. It winds its way north through farmland as Old Dixie Highway and Old Stage Road. It then has a short concurrency with SR 68 before following along the banks of Watts Bar Lake to enter Spring City, where SR 302 comes to an end at an intersection with US 27/SR 29. The entire route of SR 302 is a two-lane highway.