Beside connecting with the Harlem branch at 174th Street, interchange of traffic will be made with the West Farms branch of the Interborough Rapid Transit subway at 180th Street and Morris Park Avenue. There is also a branch connecting with the New Haven main line at New Rochelle. About ten years ago actual construction work was begun on the southern end of the road, but the company was unable to finance the project and was forced to give it up. Throughout its entire length, the line has been built to conform with the main line standard of the New Haven. The rail is 100-lb. section and creosoted ties with 22 in. of ballast are used.
All bridges are of concrete and steel, and have been designed to stand heavy traffic at high speed.
They are all waterproofed. The road will be operated by single phase current as a part of the New Haven electrical system, and multiple-unit trains will furnish the passenger service. There will be no freight service for the present. It is four-tracked from 174th Street to Mount Vernon, where two tracks diverge to White Plains, and two to New Rochelle. The maximum grade is 1.0 percent, except for one stretch of 2.5 percent from 174th Street, the junction with the Harlem branch tracks, to the south end of the West Farms Viaduct at 177th Street.