I was directed to this bridge by the Washtenaw County Historic Society. Although the society did not mention anything about it, this bridge appears like it is on private property now, as there is a fence you have to walk around beside an old mill to get to the bridge.
Harman Road dead ends at the bottom of a hill. The bridge is to your left a little ways along the fence line as you stop at the end of the road, behind the old mill.
