Thanks all for the lovely photos! Two of my favorites are the Iron Bridge (Iron Bridge, Shropshire, UK ) which was built in 1779 across the River Severn and is the first cast iron bridge and the Pulaski Skyway (some lovely old photos in this blog post) - readers may remember it from the opening credits of The Sopranos. The Skyway, opened in 1932 and named in honor of a Polish general supporting the American Revolutionary War, is approximately 3.5 miles long and connects Jersey City to Newark, over river and marshes. A steel-truss cantilevered bridge, it replaced an old plank bridge/roadway.
The Iron Bridge
The Pulaski Skyway (photo courtesy of NYTimes)