Construction started in 1917 and completed in 1923. The Key Bridge crosses the Potomac River connecting Rosslyn in Arlington VA and Georgetown in Washington DC. Today the Key Bridges is one of the busiest bridges in the area. The George Washington Parkway passes beneath this bridge. Rosslyn as seen from Waterview condos Rooftop deck at Waterview Rosslyn Mews in Arlington Bridges over the Potomac River At Freedom Park, in front of the Artisphere in Rosslyn Rosslyn has lots of condominiums to chose from