Double track line.
Electric interlocking installed around 1970's
Crossing with Nickel Plate Cloverleaf District and paralleling Illinois Terminal.
Tower listed with Pennsylvania Railroad
ILLINOIS TRANSFER JCT.
Tower listed with Louisville & Nashville
Mechanical interlocking installed 1902
Crossing with Southern Railway St. Louis Division.
Electric interlocking installed around 1906
New electric interlocking installed 1938
Junction with MacArthur Subdivision, and with Missouri Pacific Chester Subdivision and CN former Illinois Central St. Louis Subdivision, and Alton & Southern. The new interlocking installed 1938 accommodated the addition of the MacArthur Subdivision.