Duke Ellington Bridge

From http://www.culturaltourismdc.org/dch_tourism2608/dch_tourism_show.htm?doc_id=42019:

Many of Paul Cret's neo-classical and arte moderne designs grace Washington, DC, including the Federal Reserve Building (Constitution and 20th Sts., NW) and the Organization of American States (Constitution and 17th Sts., NW). His most graceful works in DC, however, are two bridges that span Rock Creek Park: this one, named after Edward K. "Duke" Ellington and the Connecticut Avenue Bridge over Klingle Valley between Woodley Park and Cleveland Park.

The Duke Ellington bridge was built in 1935 in the neo-classical style. It was placed on the DC Register in 1965.