Woodrow Wilson Bridge

The Woodrow Wilson Memorial Bridge is a bascule bridge that spans the Potomac River between the independent city of Alexandria, Virginia, and Oxon Hill in Prince George's County, Maryland, United States. The original bridge was one of only a handful of drawbridges in the U.S. Interstate Highway System. It contained the only portion of the Interstate system owned and operated by the federal government until it was turned over to the Virginia and Maryland departments of transportation upon project completion.The Wilson Bridge carries Interstate 95 and I-495. The drawbridge on the original span opened about 260 times a year, frequently disrupting traffic on a bridge that carried about 250,000 cars each day. The new, higher span requires fewer openings.

The bridge's west abutment is in Virginia, a small portion is in Washington, D.C., and the remaining majority of it is within Maryland.

Source: Wikipedia