Chainbridge VA in 1919

The Chain Bridge is a viaduct which crosses the Potomac River at Little Falls in Washington, D.C. It carries close to 22,000 cars a day. It connects Washington with affluent sections of Arlington and Fairfax counties in Virginia. In 1919, Chainbridge had a roadhouse on the Virginia side.
Chain Bridge
Chain Bridge, with the roadhouse on the Virginia side - 1919

Key Bridge under construction, in 1917

Arlington - Key Bridge
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.