New Haven Rail Yard, Interlocking Control Building, Vicinity of Union Avenue , New Haven, New Haven County, CT
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Vicinity of Union Avenue, New Haven, CT
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Documentation compiled after 1968.
Survey number HAER CT-160-A
Building/structure dates: 1954 initial construction
Significance: The Interlocking Control Building is significant because its console, relays and other internal components represent an early use of centralized train control on a major railroad. The console monitors and controls track turnouts and switches between Woodmont and Branford, Connecticut, a distance of nearly twenty miles. It was a large and expensive system for its time and made use of newly improved relay technology.
Connecticut Department Of Transportation
Metro North Commuter Railroad
Ford, W. A.
Union Switch And Signal Division
Westinghouse Air Brake Company
New Haven Railroad
Historic American Engineering Record (Library of Congress)
SOUTHEAST ELEVATION, FACING MAIN LINE TRACKS, CAMERA FACING NORTHWEST.
SOUTHWEST AND NORTHWEST ELEVATIONS, CAMERA FACING EAST.
INTERIOR, SECOND FLOOR, SHOWING TRACK-CONTROL CONSOLE, CAMERA FACING WEST.
DETAIL OF CONSOLE, SHOWING TRACK CONTROL FOR TRACKS BEHIND NEW HAVEN STATION, CAMERA FACING NORTHWEST.
INTERIOR, FIRST FLOOR, SHOWING BANKS OF ELECTRO-MECHANICAL RELAYS, CAMERA FACING SOUTHEAST.
DETAIL OF ELECTRO-MECHANICAL RELAYS ON PANELS, FIRST FLOOR, CAMERA FACING SOUTH.
DETAIL OF ELECTRO-MECHANICAL RELAYS ON SHELVES, FIRST FLOOR, CAMERA FACING SOUTHWEST. THESE "UNION ROUTE INTERLOCKING SELECTION UNITS" ALLOWED RELATIVELY EASY REPLACEMENT OF MALFUNCTIONING CIRCUITS.
DETAIL OF LINE CONNECTORS, FIRST FLOOR, CAMERA FACING NORTHEAST.
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