(Stone Arch Bridge) SW of Allentown, Lower Macungie Township, Lehigh County, PA. US222 (Hamilton Blvd) SW 1.3 miles from jct with I78 exit 54 just SW of Allentown to the mural on the N. side of the road on the E. side of a daycare building. (N40 33.81 W75 33.65) Photo by Jack Schmidt 6-27-06.