The right-of-way of South 5th Street ran through the center of the plaza, occupied entirely by a pair of trolley tracks which fed into the Williamsburg Bridge.

[1][16] The northern half of the terminal has since been replaced by LaGuardia Playground, named after former New York City mayor Fiorello H. La Guardia.

Buses can exit the terminal to either Broadway or South 5th Street at the east end of the block.

[23] Meanwhile, four Manhattan trolley routes from the New York Railways Company were extended across the bridge to Washington Plaza.

[24] On December 1, 1923, service on the now-Brooklyn–Manhattan Transit Corporation (BMT) lines over the Williamsburg Bridge ended, due to decreasing profits and a dispute with the city over tolls.

[27] On February 15, 1931, BMT streetcars once again began running to Manhattan, after municipal shuttle service ended.

[12][17][18] On December 6, 1948, the last of the streetcar lines to run over the bridge, the "Williamsburg Bridge Local" shuttle between the Manhattan and Brooklyn trolley terminals, was converted into the B39 bus route, which ran between the plaza and Lower Manhattan.

The project will bring new benches, a sleek, glass-paneled indoor waiting room, public restrooms, and widened sidewalks to the eight bus lines serving in the terminal.