"Low bridge, everybody down" is the song we've all learned in grammer school. This is one of the early bridges sold to a farmer when the barge canal was built. A flood damaged it and it was then salvaged by volunteers. It was rebuilt to display the first iron bridge in the world. Note the rocks on the abutment. It was built by heavy equipment by the volunteers. It does not have near the workmanship quality of the old hand done stone work.