ILLINOIS'S INTERLOCKINGS

TERMINAL RAILROAD ASSOCIATION OF ST. LOUIS

MacArthur Subdivision

Double track line.


Q TOWER (East St. Louis)
Tower listed with Terminal Railroad Association (Eads Subdivision)

VALLEY JCT.
Tower listed with Terminal Railroad Association (Illinois Transfer Subdivision)

EAST APPROACH JCT.
Remote interlocking installed 1938, controlled from Valley Jct.

Junction with Alton & Southern.

NORTH APPROACH JCT.
CTC interlocking installed 1939, controlled from Gratiot Street

Connection to Q Tower.

SOUTH APPROACH JCT.
CTC interlocking installed 1939, controlled from Gratiot Street

Connection to Missouri Pacific freight line at Carroll Street.

GRATIOT STREET
Electric interlocking installed 1939

Junction with Merchants Subdivision.


EARLY CTC INSTALLATIONS

East St. Louis-St. Louis
Installed 1939, control machine at Gratiot Street tower