The fort was built in late 1861 by soldiers from the 11th Massachusetts Infantry regiment and was intended to assist in the defense of the northeast approaches to Washington between Fort Totten and Fort Lincoln. Company F of the 11th Vermont Infantry Regiment was assigned to Fort Bunker Hill to assist in the defense of the city until November 17, 1862. Thirteen guns were mounted in the rectangular-shaped fort, which operated until the conclusion of hostilities in 1865. The site of the fort is bounded by 14th, Otis, 13th, and Perry Streets, NE. Today, little remains of the fort, and the site is maintained by the National Park Service.