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Harris Tower, then called HG Tower from its call sign when railroad communications were sent via telegraph, was built in 1929. [6] It replaced three nearby towers that had been constructed in 1889. The consolidation reduced the manpower needed to control the 3,300 feet (1,000 m) and 15 sets of tracks north of Pennsylvania Station from 21 to 12. [7]
An interlocking system is designed so that it is impossible to display a signal to proceed unless the route to be used is proven safe. Interlocking is a safety measure designed to prevent signals and points/switches from being changed in an improper sequence. For example, interlocking would prevent a signal from being changed to indicate a ...
Erie Railway and Pennsylvania Railroad, Horseheads Interlocking Tower Tower Horseheads: Chemung: New York NY-33: Erie Railway, Hornell Station 1971 Shop Hornell: Steuben: New York NY-34: Erie Railway, Hornell Erecting Shop 1971 Shop Hornell: Steuben: New York NY-35: Erie Railway, Corning Side Hill Cut 1971 Cut Corning: Steuben: New York NY-36
The Chicago and Western Indiana Railroad operated an extensive number of interlocking tower system on its system. From the north, towers were as follows: 12th Street tower, 15th Street tower, 16th Street tower, 21st Street tower, 40th Street tower, 47th Street tower, Ford Street tower (59th Street), 74th Street tower, 81st Street tower, Oakdale (later remote controlled by 81st Street), Pullman ...
In 1968 when the Pennsy merged with the New York Central to form Penn Central, PC kept using the tower. In 1976, the government freight railroad: the Consolidated Rail Corporation, better known as Conrail, assumed operations from the bankrupt Penn Central, which had gone bankrupt in 1970. In the Conrail years, Hook Tower was closed down.
Constructed in 1848, the Paterson and Ramapo Railroad through Waldwick created a connection between the Erie Railroad at Suffern, New York to Paterson, where it linked with the Paterson and Hudson River Railroad to the terminal and ferry in Jersey City. A station at Waldwick was established in 1887. The yard around the depot was expanded in ...
E.J. and E. Griffith Interlocking Tower is a historic interlocking tower located at Griffith, Lake County, Indiana. It was built in 1924 by the Elgin, Joliet and Eastern Railway. It is a three-story, brick building measuring 25 feet long, 16 feet wide, and 30 feet tall. It has a concrete foundation and low pitched hipped roof.
Union Tower was built by the Pennsylvania Railroad (PRR) to control the Perth Amboy and Woodbridge Railroad.Incidentally the PA&W was electrified by the PRR in 1935. For years this interlocking tower on the PRR had controlled trains on the NEC and the PA&W heading either to or from the New York and Long Branch Railroad in South Amboy, New Jersey.