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Groton

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Mystic River Bridge, Spanning Mystic River at U.S. Route 1, Groton, New London County, CT



B&W Photos


Data Pages


Photo Caption Pages


Item Title


Location
Spanning Mystic River at U.S. Route 1, Groton, CT

Find maps of Groton, CT


Created/Published
Documentation compiled after 1968.

Notes
Survey number HAER CT-174
Significance: The Mystic River Bridge is significant as an example of the Brown Balance Beam Bascule, an innovative design that raised movable-bridge technology to a new level of refinement in the early 20th century. The bridge also has historical significance because it completed the State Highway Department's improvement program for coastal Route 1, Connecticut's most important "Trunk Line" highway.

Subjects
Vehicular Bridges


Collection
Historic American Engineering Record (Library of Congress)

Contents
Photograph caption(s): 
1. VIEW NORTH, GENERAL VIEW OF BRIDGE WITHIN SETTING
2. VIEW SOUTHEAST, NORTH ELEVATION
3. VIEW NORTHWEST, BRIDGE IN OPEN POSITION
4. VIEW EAST, TRAFFIC LEVEL FROM WEST END
5. VIEW WEST, TRAFFIC LEVEL FROM EAST END
6. VIEW SOUTHEAST, NORTH AND EAST ELEVATIONS OF OPERATOR HOUSE; OPERATING WHEEL AND LINK AND COUNTERWEIGHT LINK IN FOREGROUND
7. VIEW NORTH, SOUTH AND WEST ELEVATIONS OF OPERATOR HOUSE
8. VIEW EAST, SHOWING FENDER AROUND EAST PIER AND END OF EAST APPROACH SPAN, WITH BRIDGE OPEN
9. VIEW WEST, DETAIL OF EAST PIER
10. VIEW NORTH, DETAIL OF OPERATING WHEEL AND LINK, NORTH SIDE, BRIDGE CLOSED
11. VIEW NORTH, DETAIL OF OPERATING WHEEL AND LINK, NORTH SIDE, BRIDGE OPEN
12. VIEW NORTHWEST, DETAIL OF OPERATING WHEEL AND LINK AND COUNTERWEIGHT LINK, NORTH SIDE, BRIDGE CLOSED
13. VIEW NORTHWEST, DETAIL OF COUNTERWEIGHT LINK, SOUTH SIDE
14. VIEW SOUTH, DETAIL OF MAIN TRUNNION, NORTH SIDE
15. VIEW NORTHEAST, DETAIL OF COUNTERWEIGHTS
16. VIEW NORTHEAST, DETAIL OF STEEL DECK
17. VIEW WEST, DETAIL OF SIDEWALK AND STREET LAMP
18. VIEW NORTHEAST, INTERIOR OF OPERATOR HOUSE SHOWING CONTROL CONSOLE
19. VIEW EAST, INTERIOR OF SOUTH MOTOR HOUSE; CHAIN DRIVE TO GEARING IN PIT ON LEFT
20. VIEW NORTHWEST, INTERIOR OF SOUTH PIT, SHOWING CHAIN DRIVE FROM MOTOR
21. VIEW SOUTHWEST, INTERIOR OF SOUTH PIT, SHOWING REDUCTION GEARING
22. VIEW SOUTH, INTERIOR OF SOUTH PIT, SHOWING FINAL STEP IN GEARING THAT DRIVES OPERATING WHEEL, WITH HYDRAULIC SHAFT BRAKE
23. VIEW NORTH, COMMEMORATIVE PLAQUE ON OPERATING WHEEL CASING, SOUTH SIDE


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