Volume studies show a daily traffic count of 31,000 from 275 to Aurora which then drops by two-thirds from Aurora to Dillsboro. In the northern part of the County, SR 46 begins at the Whitewater River and parallels I-74 to the west. Traffic volume increase as SR 46 crosses west over SR 1 from 1,200 to 3,500. SR 1 extends northwest from Lawrenceburg through Saint Leon where it intersects I-74. The tremendous growth in the northern part of the county has burdened country roads build for a rural community and now is adapting to a suburban population.
County roads tend to be winding, with steep slopes, and often unpaved.
In the center portion of the County, SR 48 and SR 148 form a loop around the Lawrenceburg and Aurora areas. SR 48 then continues to the northeastern through the center of the County in a westerly direction. SR 148 the dropping to 1,700 near Riley County. The SR 148 section of the loop begins at 5,200 in Aurora then drops to 2,400 as it ends at SR 48. SR 350 parallels SR 48 to the south and connects Aurora to Moores Hill.