Stone arch bridge (Bucknell University #3) across a stream on Bucknell University campus in Lewisburg, Union County, PA. Market St. (PA45) NE 0.2 miles from jct with US15 in Lewisburg, SE (right) on 7th 0.25 miles, NE (left) on Walker St. 100’ to the bridge. (5-23-06, N40 57.46 W76 53.06) Photos by Jack Schmidt.