Segments now owned by CSX and Central Railroad of Indiana.
IU TOWER (Indianapolis)
Electric pneumatic interlocking installed 1931
Closed 1998
Tower controlled Indianapolis Union Station.
BELT CROSSING
Mechanical interlocking installed around 1910
Replaced with automatic interlocking 1980's
Crossing with Indianapolis Belt.
BEECH GROVE
Mechanical interlocking installed 1921
Closed 1961, remotely controlled by CTC dispatcher
Connection to shops complex, now owned by Amtrak.
DIX
Interlocking installed after 1916
Closed 1942, remotely controlled from Beech Grove
Interlocking at east end of a double track segment.
VINE (Shelbyville)
Mechanical interlocking installed 1892
Closed by late 1960's, remotely controlled by CTC dispatcher
Interlocking at west end of a double track segment, and former crossing with Pennsylvania Railroad Shelbyville Branch, abandoned 1976.
CLIFTY
Interlocking installed after 1916
Closed 1941, remotely controlled from Vine
Interlocking at east end of a double track segment.
ST. PAUL
Interlocking installed after 1908
Closed 1941
Controlled a passing siding.
GREENSBURG
Mechanical interlocking installed 1898
Closed late 1960's, remotely controlled by CTC dispatcher
Interlocking at west end of a double track segment, and former crossing with New York Central Michigan Branch, abandoned early 1970's.
BROW
Interlocking installed after 1916
Closed 1962, replaced with CTC installation in Indianapolis
Controlled crossovers and passing sidings.
LAWRENCEBURG JCT.
Interlocking installed after 1916
Closed 1967, remotely controlled by CTC dispatcher
Former junction with Aurora Branch, abandoned 1991.
Greensburg-Sunman-Lawrenceburg Jct.
Installed 1962, control machine likely in dispatcher's office in Indianapolis
Completed 1963