An invisible bridge, like Indy 3.......Petra, Jordan......archeology, why is there not a metro rail in Geo town, it skips from Roslyn, VA to foggy bottom, DC.......very inefficient, it would have been better to lay the underground, or above ground tracks straight across the potomac..........b/c my dad did not want people do discover the tunnels and treasure that he hid under this.........right next to Geotown univ..

The Aqueduct Bridge, also called the Alexandria Aqueduct, was a bridge that carried traffic between the Georgetown neighborhood of Washington, D.C. and Rosslyn, Virginia. The bridge existed from 1843 to 1923.

It was built to transport cargo-carrying boats on the Chesapeake and Ohio Canal in Georgetown across the Potomac River to the Alexandria Canal. The same eight piers supported two bridges: a wooden canal bridge and an iron truss bridge carrying a roadway and an electric trolley line. The canal was later topped with a wooden roadway bridge. The bridge was closed in 1923 after the construction of the nearby Key Bridge, and demolished in 1933.