Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. The Avenue C Line, also called the Houston Street Line, is a public transit line in Manhattan, New York City, United States, running mostly along Houston Street and Avenue C from TriBeCa to Kips Bay. Originally a streetcar line, it is now the M9 bus route, operated by the New York City Transit Authority. The Avenue C Railroad was chartered June 3, 1874, and opened the Avenue C Line on October 18, 1869, connecting the Pavonia Ferry at the foot of Chambers Street with the Green Point Ferry at the foot of East 10th Street.