Because of the complicated history, the Broadway Line includes several remnants of earlier plans. The line was built as four tracks south to City Hall, where the local tracks were to terminate on the upper level, and the express tracks were to use the lower level, curving through Vesey Street into Church Street. However, the final plan had the express tracks splitting at Canal Street and passing under the northbound local track to the Manhattan Bridge. The tracks via Canal Street and the Manhattan Bridge were not intended to be connected to the Broadway Line. Instead, they were supposed to be a crosstown line continuing further west. The tracks were connected to the Broadway Line as it allowed through operation between the Broadway Line and the Fourth Avenue Line in Brooklyn to go into operation more than a year earlier than would otherwise have been possible. From the Canal Street Bridge station, it is possible to see where the line would have continued further west to a terminal near the Hudson River. At the Canal Street local station, the express tracks terminate part of the way into the station, more evidence of the change of plans. The tunnel south of City Hall was rebuilt to bring the upper local tracks down to the lower level north of Vesey Street, and the lower level at City Hall was never used for passenger service. The lower level is currently used for train storage.