The Natchez Trace Bridge in Franklin, Tennessee (opened 1994). This bridge is the first American arch bridge to be to be constructed from pre-cast concrete segments. The bridge has two arches (one runs into the darkness of the image on the left), and is referred to by locals as the "McDonald's bridge" as a result. Unlike most arch bridges, this bridge is missing the weight-bearing, evenly spaced vertical spandrel columns, which is why the crown of the arches are "flatter"--this helps carry the weight load. The missing spandrels create an unencumbered view through the bridge.