Now owned by CSX.
PLEASANT STREET (Grand Rapids)
Mechanical interlocking installed 1887
Crossing and junction south of Grand Rapids Union Station involving Pere Marquette lines, and Pennsylvania Railroad Grand Rapids Division and New York Central Grand Rapids Branch.
ELMDALE
Mechanical interlocking installed 1889
Former crossing and junction with former Pere Marquette Elmdale Subdivision, abandoned 1935.
NORTH LANSING
Tower listed with New York Central
MA TOWER (Lansing)
Tower listed with New York Central
TROWBRIDGE
Tower listed with Grand Trunk Western
ANN PERE
Mechanical interlocking installed 1889
Tower destroyed by fire/replaced 1907
Replaced with automatic interlocking 1959
Crossing with Great Lakes Central Railroad (former Ann Arbor Railroad).
SOUTH LYON
Mechanical interlocking installed 1912
Electric interlocking installed 1926
Closed 1953, replaced with CTC installation in Grand Rapids
Former crossing with Grand Trunk Western Jackson Subdivision, abandoned.
PLYMOUTH
Tower listed with Pere Marquette (Saginaw Division)
OAK (Detroit)
Interlocking installed 1900
West end Oak Yard.
ROUGEMERE
Mechanical interlocking installed 1889
North end Rougemere Yard.
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DELRAY
Mechanical interlocking installed 1891
New tower constructed 1945
STILL IN USE
Crossing with New York Central Detroit Line, and junction with Wabash for combined route serving Fort Street Union Depot.
SIXTH STREET
Mechanical interlocking installed
Tower controlled Fort Street Union Depot, closed 1971.
Seymour-Elmdale-Lake Odessa
Installed 1940, control machine at Elmdale tower
Control machine expanded 1942
Relocated, control machine in dispatcher's office in Grand Rapids
Plymouth-South Lyon-Fowlerville-Trowbridge-Lansing
Installed 1953, control machine in dispatcher's office in Grand Rapids
Control machine expanded 1959
Completed 1961
Plymouth-Rougemere
Installed 1958, control machine at Plymouth tower