 The entire route of SR 104 in Dyer County is a two-lane highway.SR 104 then passes through Eaton, where it has an intersection with SR 188, before widening to a 4-lane divided highway as it continues east through farmland to come to an intersection with SR 457, where it narrows to 2-lanes and enters Trenton.It passes through downtown along Eaton Street, where it has an intersection with SR 367, before coming to an intersection with US 45W/SR 43/SR 54/SR 77.