ILLINOIS'S INTERLOCKINGS

TERMINAL RAILROAD ASSOCIATION OF ST. LOUIS

Merchants Subdivision

Double track line.


WR TOWER (Granite City)
Electric pneumatic interlocking installed 1894
Closed 1995

Junction with Union Pacific former Chicago & Alton and New York Central paired track, and Wabash Brooklyn District.

SH TOWER (Madison)
Electric interlocking installed 1904
Closed 1984

Junction with Illinois Transfer Subdivision, and with Eastern Connection connecting with Nickel Plate and Chicago & North Western in Madison.

WEST APPROACH
Mechanical interlocking installed
Tower destroyed by accident 1960
Subsequently remotely controlled by CTC dispatcher

West end Merchants Bridge, junction with West Belt Subdivision.

NORTH MARKET STREET
Electric interlocking installed
Closed around 1964, remotely controlled by CTC dispatcher

Junction with Burlington Hannibal Subdivision.

MULLANPHY STREET
Electric interlocking installed
Closed around 1964, remotely controlled by CTC dispatcher

Access to St. Louis Southwestern freight house.

BIDDLE STREET
Electric interlocking installed
Closed 1964, remotely controlled by CTC dispatcher

Access to freight yard and Burlington Route freight house.

GRATIOT STREET
Tower listed with Terminal Railroad Association (MacArthur Subdivision)

TOWER 3 (14th Street)
Electric pneumatic interlocking installed 1904
Closed 1956, remotely controlled from ID Tower

Tower controlled movements at east leg of Union Station wye. Junction with Eads Subdivision.

TOWER 2 (23rd Street)
Electric pneumatic interlocking installed 1904
Closed 1980's, remotely controlled by CTC dispatcher

Tower controlled movements at west leg of Union Station wye.

TOWER 1 (Union Station)
Interlocking installed 1894
Electric pneumatic interlocking installed 1904
Interlocking replaced 1940 after tower burned
Closed 1978

Tower controlled immediate Union Station area.

GRAND AVENUE
Mechanical interlocking installed 1896
Electric interlocking installed 1955
Closed 1986

Interlocking actually operated by Missouri Pacific. Junction with Missouri Pacific, St. Louis San Francisco, and Wabash Moberly Division.


ID TOWER
Tower listed with Terminal Railroad Association (Eads Subdivision)