along the trim line at regular intervals. The western end (railroad north) of the walls is plain white. Yellow I-beam columns line both sides of the island platform at regular intervals with alternating ones having the standard black station name plate in white lettering. Some of these show the name "Carnegie", from Carnegie Steel (predecessor of United States Steel). Image gallery Surface connections In 1916, a single-track counterclockwise trolley loop was built around Borough Hall with both ends at Joralemon Street and access from westbound Fulton Street to the loop and from the loop to southbound Court Street. Passengers on lines that used the loop, Court Street, or Fulton Street could transfer to the entrance of this station complex bounded by those two streets and the loop, north of Borough Hall. The lines that used this loop included: Flatbush–Prospect Park Line to Prospect Park Flatbush–Seventh Avenue Line to Greenwood Cemetery and the Ninth Avenue Depot Hicks Street Line to Erie Basin Rogers Avenue Line to Flatbush St. Johns Place Line to Ocean Hill Third Avenue Line to Fort Hamilton 16th Avenue Line to New Utrecht There were other lines that passed Borough Hall and thus served the station. On Court Street, such lines included: Court Street Line to Gowanus Flatbush Avenue Line to Bergen Beach Greenpoint Line to Greenpoint (also on Joralemon Street) Montague Street Line to Wall Street Ferry Union Street Line to Greenwood Cemetery, Ninth Avenue Depot, and Coney Island On Fulton Street: DeKalb Avenue Line to Ridgewood Fulton Street Line to Cypress Hills Greene and Gates Avenues Line to Ridgewood Myrtle Avenue Line to Ridgewood Putnam Avenue Line to Ridgewood On Joralemon Street: Crosstown Line to Erie Basin and Long Island City Erie Basin Line to Erie Basin On April 7, 1930, the Brooklyn–Manhattan Transit Corporation eliminated the loop to relieve congestion. Several lines were moved to a loop on Washington Street north of Tillary Street or a clockwise loop on Livingston Street, Court Street, Joralemon Street, Fulton Street, and Boerum Place. References Further reading Lee Stokey. Subway Ceramics: A History and Iconography. 1994. . External links (includes current and former track configurations, and provisions for future connections) IRT Broadway–Seventh Avenue Line stations IRT Eastern Parkway Line stations BMT Fourth Avenue Line stations New York City Subway transfer stations Railway and subway stations on the National Register of Historic Places in New York City New York City