While walking from the Rosslyn Metro Station to the Francis Scott Key Memorial Bridge over the Potomac, we walked over a surprise bridge. If we had chosen to walk over on the upriver side of the Francis Scott Key Memorial Bridge, I may have completely missed that we walked a bridge over I-66.

Gateway Park is a “cap” over the freeway and is both a park and a bridge. Unlike Pittsburgh’s CAP or Frankie Pace Park, Gateway Park was built in the 1980s at the same time as the freeway it covers. It also distinguishes itself from Pittsburgh’s park/bridge by appearing to be fully integrated with the surrounding city and having well-utilized programming.