CHICAGO'S INTERLOCKINGS

SANTA FE

Illinois Division/1st District

Now owned by BNSF.

Double track line with single direction ABS, eventually receiving bidirectional signaling or CTC. Information is sketchy for several interlockings, which did not involve other railroads and were presumably less subject to state regulation. Some of these towers might have existed for the convenience of occasional left hand running, which received bidirectional signaling apparently in 1927 between Willow Springs and Joliet, and in 1953 between Chicago and Willow Springs. The installation of CTC around the 1960's enabled the elimination of many towers between Chicago and Joliet. CTC was completed in 2000's between Joliet and Pequot.


BRIDGEPORT
Tower listed with Chicago & Alton

ASH STREET
Tower listed with Illinois Central

CORWITH
Tower listed with Chicago & Alton

NERSKA (Lemoyne)
Tower listed with Belt Railway of Chicago

MCCOOK
Tower listed with Indiana Harbor Belt

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WILLOW SPRINGS

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ROMEO
Closed 1953, replaced with CTC installation at Willow Springs tower

JOLIET
Interlocking installed 1931

UD TOWER (Joliet)
Tower listed with Rock Island

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PLAINES
Electric interlocking installed 1941

East end of paired track with Chicago & Alton Pequot Subdivision.

PEQUOT
Mechanical interlocking installed 1904

West end of paired track with Chicago & Alton Pequot Subdivision.


EARLY CTC INSTALLATIONS

Bridgeport-Joliet
Installed 1953, control machine at Willow Springs tower