The line includes an unused trackway in the middle for a third track. On the roof of the mezzanines at each station are cross ties but no rails. In some areas the space is used for mechanical and signal rooms. A center track exists only at Junius Street, where it crosses the southbound track at grade towards the Linden Shops. This un-electrified track is one of only two connections to the national rail system. (The BMT West End Line is the other. The Linden Shops are connected to the Long Island Rail Road and from there to the rest of the national network.) There are plans to renovate the elevated structure, including new mezzanines and stairs.
This line was built as a part of the Dual Contracts. The 2 and 3 trains kept on switching their southern terminals until 1983, when the 2 was sent to Flatbush Avenue and the 3 to New Lots Avenue, which remains the current service pattern.
^In a 1981 list of "most deteriorated subway stations", the MTA listed Borough Hall and Court Street stations as part of the New Lots Line: New York Times, Agency Lists Its 69 Most Deteriorated Subway Stations, June 11, 1981, section B, page 5