Now owned by Norfolk Southern.
Double track line between Chicago and Van Loon.
JN/BROOKLINE
Tower listed with New York Central
PULLMAN JCT.
Tower listed with Belt Railway of Chicago
CUMMINGS BRIDGE
Mechanical interlocking installed 1900
STILL IN USE
Drawbridge over the Calumet River.
BURNHAM
Tower listed with Pennsylvania Railroad
STATE LINE
Tower listed with Chicago & Western Indiana
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CALUMET RIVER
Tower listed with Erie Railroad
HOHMAN AVENUE
Tower listed with Indiana Harbor Belt
OSBORN
Tower listed with Indiana Harbor Belt
VAN LOON
Tower listed with Elgin Joliet & Eastern
SOUTH GARY
Electric interlocking installed 1926
Replaced with automatic interlocking 1960
Former crossing with New York Central Joliet Branch, abandoned 1976.
HOBART
Tower listed with Elgin Joliet & Eastern
SPRIGGSBORO (Valparaiso)
Tower listed with Grand Trunk Western
SOUTH WANATAH
Mechanical interlocking installed 1926
Replaced with automatic interlocking 1956
Former crossing with Monon Michigan City Branch, abandoned 1980.
THOMASTON
Mechanical interlocking installed 1926
Replaced with automatic interlocking 1930
Crossing with Pere Marquette La Crosse Subdivision.
KNOX
Mechanical interlocking installed before 1906
Replaced with automatic interlocking 1957
Former crossing with New York Central Kankakee Branch, abandoned 1982.
HIBBARD
Interlocking installed after 1916
Replaced with automatic interlocking around 1953
Former crossing with Pennsylvania Railroad South Bend Branch, abandoned 1973.
ARGOS
Interlocking installed after 1916
Closed by 1980's
Crossing with former Nickel Plate Indianapolis Division, now Elkhart & Western Railroad and Fulton County Railroad.
CLAYPOOL
Tower listed with New York Central
SOUTH WHITLEY
Mechanical interlocking installed 1894
Replaced with automatic interlocking mid 1950's
Former crossing with Pennsylvania Railroad Butler Branch, abandoned 1976.
WEST WAYNE/RUNNION AVENUE
Interlocking installed after 1916
Closed 1974
Former crossing with Pennsylvania Railroad Grand Rapids Division, abandoned 1982.
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WEST WAYNE
Remote interlocking installed 1952, controlled from uncertain location
Former crossing with New York Central Fort Wayne Branch, not included in Conrail 1976.
NE TOWER (New Haven)
Mechanical interlocking installed 1894
Closed by 1980's
Crossing with Wabash main line, east end of a double track segment on Wabash main line, now a junction for Norfolk Southern.
Hadley-South Whitley-Claypool-Argos-Knox-Van Loon
Installed 1942, control machine in dispatcher's office in Fort Wayne
Control machine expanded 1946 and 1951
Completed 1953