Back of the Yards neighborhood and was formerly the Pennsylvania Railroad's Levitt Street Yard. GTW also increased intermodal operations in Detroit In 1976, when it expanded its Ferndale, Michigan railyard into an intermodal facility it called GT MoTerm. The Elsdon Yard was closed and abandoned by 1990 and has been redeveloped. Detroit, Toledo and Ironton's former hump classification yard in Flat Rock, which GTW acquired from its 1983 merger with DT&I? still serves as an important freight hub for Canadian National. Several interlocking and crossing gate towers were also maintained by GTW through its history. Passenger trains Grand Trunk Western's primary passenger trains were the Maple Leaf, the International Limited, the Inter-City Limited and The LaSalle, which provided service between Chicago's Dearborn Station and Toronto Union Station. In 1967, GTW introduced The Mohawk as a fast through train between Chicago and Brush Street Station in Detroit. Passenger operations were handed-over to Amtrak (National Railroad Passenger Corporation) on May 1, 1971. Amtrak's Chicago to Port Huron trains, known as its Blue Water Service, operate over GTW's route between Battle Creek and Port Huron. The railroad also operated suburban commuter trains between downtown Detroit and Pontiac, Michigan, from August, 1931 until January, 1974 when, the now-defunct Southeast Michigan Transportation Authority (SEMTA) took over operating the commuter trains. Amtrak's Detroit–Chicago trains now originate or terminate over this former commuter line, making stops in the northern Detroit suburbs of Pontiac, Troy and Royal Oak, Michigan. Part of GTW's former route in Detroit, to Brush Street Station and its railcar ferry dock known as the Dequindre Cut, has been transformed into an urban greenway rail trail. Car ferries Lake Michigan Grand Trunk Western was one of three Michigan railroads, along with the Ann Arbor Railroad and Pere Marquette Railway, that operated separate railcar ferry service across Lake Michigan between Michigan and Wisconsin. Loading rail cars onto ships that had rails mounted to their decks, and ferrying the cars east and west across Lake Michigan, allowed railroads to bypass the congested rail interchanges in Chicago and move time-sensitive freight more quickly. GTW's ferry service was originally operated by the former Detroit, Grand Haven and Milwaukee Railway (DGH&M), which Grand Trunk Railway acquired in 1882. DGH&M initially had agreements with ferry companies operating on Lake Michigan to transfer its passengers and freight onto ships bound for Milwaukee from Grand Haven, Michigan. GTW's rail car ferry service began