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Connecticut

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New Haven

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Tomlinson Bridge, Spanning Quinnipiac River at Forbes Street (U.S. R, New Haven, New Haven County, CT



B&W Photos

HB260300
View East, Southwest Elevation

HB260301
View East, Southwest Elevation

HB260302
View North, Bridge Closed

HB260303
View North, Bridge Partially Raised

HB260304
View North, Bridge Open

HB260305
View Northwest, Eastern Approach, Bridge Partially Open

HB260306
View Northwest, Showing 390 Foot Fill Section

HB260307
View West, Showing Three Fixed Spans

HB260308
View North, Western Fixed Sections Of Bridge

HB260309
View East, Eastern Fixed Sections Of Bridge

HB260310
View Southeast, Western Approach

HB260311
View Northwest, Eastern Approach

HB260312
View West, Control House - Built Circa 1976

HB260313
View North Of 1976 Control House And Western Leaf In Closed Position

HB260314
View South, Storehouse On East Abutment, Detail Of Cyma Roof

HB260315
View West, Storehouse On East Abutment

HB260316
Typical Abutment

HB260317
Decorative Arch Framing Commemorative Plate

HB260318
Detail Of Typical Balustrade

HB260319
View East, Underside Of Bascule Leaf Showing Structural Members And Bascule Girders With Rack Gear Section

HB260320
View East, Underside Of Bascule Leaf Showing Structural Members And Bascule Girders With Rack Gear Section

HB260321
View Southeast From Control Room, Note Storehouse On Eastern Abutment

HB260322
View Northeast, Control Panel For Controlling Bridge Operation

HB260323
View East Showing Bascule Girders 'a', 'b', 'c', And 'd'; Drive Gear 'd' With Guard Is Located In The Lower Center Of The Photograph

HB260324
View West Showing Bascule Girders 'a', 'b', 'c', And 'd'; Drive Gear 'd' With Guard Is Located In The Lower Center Of The Photograph

HB260325
View West, Showing 1976 Control House And Leaf In Fully Raised Position

HB260326
View Northeast, East Abutment Showing Drive Gear 'd' In Lower Center Of Photograph And Racks On Center Bascule Girders 'b' And 'c' At Left Center

HB260327
View Southwest, East Abutment Showing Bascule Leaf In Raised Position With The Extreme Upper Portion Of The Bascule Rack Gear Showing In The Lower Right Portion Of The Photograph

HB260328
View Northwest Of Rack Gears On Bascule Girders 'b' And 'c'

HB260329
View Northeast Of Operating Machinery

HB260330
View Northeast Of Operating Machinery

HB260331
View Northeast Of Operating Machinery

HB260332
East Abutment, View Northeast Of Operating Machinery - Small Gear Is Identified As 'c' - Large Gear Is 'b' Refer To Gearing Diagrams - Strauss Sheet #15 For Power Train Relationships

HB260333
View Southeast, West Abutment Of Operating Machinery - Large Gear At Left Center Is 'd' - Refer To Strauss Sheets #15 And #18 For Power Train Relationships

HB260334
View Southeast, West Abutment Of Operating Machinery - Bascule Leaf Raised - Large Gear At Left Center Is 'd' - Refer To Strauss Sheets #15 And #18 For Power Train Relationships

HB260335
West Side Gearmotor With Chain Drive - Original Installation Did Not Use Chain Drive

HB260336
View Of Top And Front Side Of East Side Counterweight - Bascule Is In Raised Position - Note 'pockets' In Counterweight To Allow For Weight Adjustment - Note Recess On Top Of Counterweight - This Allowed The Positioning Of The Weight Under The Deck, Betwe

HB260337
View East, West Abutment, South Side - View Of Rack Gear On Bascule Girder 'd' - Note Counterweight And Counterweight Link At Upper Left Of Photograph

HB260338
View East Inside West Counterweight Pit - Gear 'd' Is At Center Of Photograph - Bottom Of Counterweight Is At Top Right Of Photograph

HB260339
View Of A West Side Counterbalance - Bascule Is In Closed Position; Counterweight At Top Of Pit - Note Vernacular Weights Hung On Counterweight To Increase Weight

HB260340
View Of West Bascule Leaf Locking Pins In Extended Position - Pins Fit Into Matching Bushings On The East Leaf And Secure The East And West Sections When The Bridge Is Down.

HB260341
View Looking West At Rail And Bascule Deck Section.

HB260342
Oblique View Of Rails And Bascule Deck Section At Break Between East And West Leafs.

HB260343
View Of Bronze Dedication Plaque Located On Storehouse, East Abutment

HB260344
View Of Bronze Builders Plate Located On North Side At Outermost End Of Western Approach Wall

HB260345
View Of Bronze Engineers/inspectors Plaque Located On South Side Of Western Approach Wall


Data Pages


Photo Caption Pages


Item Title


Location
Spanning Quinnipiac River at Forbes Street (U.S. R, New Haven, CT

Find maps of New Haven, CT


Created/Published
Documentation compiled after 1968.

Notes
Survey number HAER CT-61
Significance: In 1924, an existing swing bridge at this location was replaced by the present trunioned, double leaf bascule bridge. The new bridge was designed to handle vehicular, rail freight and public transport trolley car service. The plans clearly illustrate the claims protected under U.S. patent #1,124,356. Strauss' patented design permitted a low architectural profile which Wiggin finished in the Beaux Arts style. This treatment was in harmony with the nearby Adee (Yale) Boathouse and its original environment. Strauss went on to have a noteworthy career as a master bridgebuilder. He achieved prominence as a member of the design team and chief engineer for the Golden Gate Bridge at the mouth of San Francisco Bay.

Subjects
Bridges


Collection
Historic American Engineering Record (Library of Congress)

Contents
Photograph caption(s): 
1. VIEW EAST, SOUTHWEST ELEVATION
2. VIEW EAST, SOUTHWEST ELEVATION
3. VIEW NORTH, BRIDGE CLOSED
4. VIEW NORTH, BRIDGE PARTIALLY RAISED
5. VIEW NORTH, BRIDGE OPEN
6. VIEW NORTHWEST, EASTERN APPROACH, BRIDGE PARTIALLY OPEN
7. VIEW NORTHWEST, SHOWING 390 FOOT FILL SECTION
8. VIEW WEST, SHOWING THREE FIXED SPANS
9. VIEW NORTH, WESTERN FIXED SECTIONS OF BRIDGE
10. VIEW EAST, EASTERN FIXED SECTIONS OF BRIDGE
11. VIEW SOUTHEAST, WESTERN APPROACH
12. VIEW NORTHWEST, EASTERN APPROACH
13. VIEW WEST, CONTROL HOUSE - BUILT CIRCA 1976
14. VIEW NORTH OF 1976 CONTROL HOUSE AND WESTERN LEAF IN CLOSED POSITION
15. VIEW SOUTH, STOREHOUSE ON EAST ABUTMENT, DETAIL OF CYMA ROOF
16. VIEW WEST, STOREHOUSE ON EAST ABUTMENT
17. TYPICAL ABUTMENT
18. DECORATIVE ARCH FRAMING COMMEMORATIVE PLATE
19. DETAIL OF TYPICAL BALUSTRADE
20. VIEW EAST, UNDERSIDE OF BASCULE LEAF SHOWING STRUCTURAL MEMBERS AND BASCULE GIRDERS WITH RACK GEAR SECTION
21. VIEW EAST, UNDERSIDE OF BASCULE LEAF SHOWING STRUCTURAL MEMBERS AND BASCULE GIRDERS WITH RACK GEAR SECTION
22. VIEW SOUTHEAST FROM CONTROL ROOM, NOTE STOREHOUSE ON EASTERN ABUTMENT
23. VIEW NORTHEAST, CONTROL PANEL FOR CONTROLLING BRIDGE OPERATION
24. VIEW EAST SHOWING BASCULE GIRDERS 'A', 'B', 'C', AND 'D'; DRIVE GEAR 'D' WITH GUARD IS LOCATED IN THE LOWER CENTER OF THE PHOTOGRAPH. REFER TO GEARING DIAGRAMS - STRAUSS SHEET #15 FOR POWER TRAIN RELATIONSHIPS
25. VIEW WEST SHOWING BASCULE GIRDERS 'A', 'B', 'C', AND 'D'; DRIVE GEAR 'D' WITH GUARD IS LOCATED IN THE LOWER CENTER OF THE PHOTOGRAPH. REFER TO GEARING DIAGRAMS - STRAUSS SHEET #15 FOR POWER TRAIN RELATIONSHIPS.
26. VIEW WEST, SHOWING 1976 CONTROL HOUSE AND LEAF IN FULLY RAISED POSITION
27. VIEW NORTHEAST, EAST ABUTMENT SHOWING DRIVE GEAR 'D' IN LOWER CENTER OF PHOTOGRAPH AND RACKS ON CENTER BASCULE GIRDERS 'B' AND 'C' AT LEFT CENTER
28. VIEW SOUTHWEST, EAST ABUTMENT SHOWING BASCULE LEAF IN RAISED POSITION WITH THE EXTREME UPPER PORTION OF THE BASCULE RACK GEAR SHOWING IN THE LOWER RIGHT PORTION OF THE PHOTOGRAPH
29. VIEW NORTHWEST OF RACK GEARS ON BASCULE GIRDERS 'B' AND 'C'
30. VIEW NORTHEAST OF OPERATING MACHINERY. BASCULE LEAF IN CLOSED POSITION - DRIVE GEAR 'D' IS AT CENTER OF PHOTOGRAPH. NOTE VERNACULAR WEIGHT SUSPENDED ON COUNTERWEIGHT AT TOP LEFT OF PHOTOGRAPH TO COMPENSATE FOR AN UNDERWEIGHT COUNTERWEIGHT
31. VIEW NORTHEAST OF OPERATING MACHINERY. GEAR 'C5' IS AT LOWER LEFT AND EMERGENCY BRAKE MECHANISM ON PEDESTAL AT CENTER. NOTE LOWER EQUALIZING LINKAGE FOR COUNTERWEIGHT AT LEFT CENTER OF PHOTOGRAPH - THIS WAS A KEY COMPONENT OF STRAUSS' PATENT PARALLOGRAM LINKAGE
32. VIEW NORTHEAST OF OPERATING MACHINERY. GEAR 'D' IS AT CENTER OF PHOTOGRAPH, EMERGENCY BRAKE ON THE PEDESTAL TO THE LEFT OF CENTER
33. EAST ABUTMENT, VIEW NORTHEAST OF OPERATING MACHINERY - SMALL GEAR IS IDENTIFIED AS 'C' - LARGE GEAR IS 'B' REFER TO GEARING DIAGRAMS - STRAUSS SHEET #15 FOR POWER TRAIN RELATIONSHIPS
34. VIEW SOUTHEAST, WEST ABUTMENT OF OPERATING MACHINERY - LARGE GEAR AT LEFT CENTER IS 'D' - REFER TO STRAUSS SHEETS #15 AND #18 FOR POWER TRAIN RELATIONSHIPS
35. VIEW SOUTHEAST, WEST ABUTMENT OF OPERATING MACHINERY - BASCULE LEAF RAISED - LARGE GEAR AT LEFT CENTER IS 'D' - REFER TO STRAUSS SHEETS #15 AND #18 FOR POWER TRAIN RELATIONSHIPS
36. WEST SIDE GEARMOTOR WITH CHAIN DRIVE - ORIGINAL INSTALLATION DID NOT USE CHAIN DRIVE
37. VIEW OF TOP AND FRONT SIDE OF EAST SIDE COUNTERWEIGHT - BASCULE IS IN RAISED POSITION - NOTE 'POCKETS' IN COUNTERWEIGHT TO ALLOW FOR WEIGHT ADJUSTMENT - NOTE RECESS ON TOP OF COUNTERWEIGHT - THIS ALLOWED THE POSITIONING OF THE WEIGHT UNDER THE DECK, BETWEEN THE GIRDERS - GEAR 'D' IS AT RIGHT CENTER OF PHOTOGRAPH
38. VIEW EAST, WEST ABUTMENT, SOUTH SIDE - VIEW OF RACK GEAR ON BASCULE GIRDER 'D' - NOTE COUNTERWEIGHT AND COUNTERWEIGHT LINK AT UPPER LEFT OF PHOTOGRAPH
39. VIEW EAST INSIDE WEST COUNTERWEIGHT PIT - GEAR 'D' IS AT CENTER OF PHOTOGRAPH - BOTTOM OF COUNTERWEIGHT IS AT TOP RIGHT OF PHOTOGRAPH
40. VIEW OF A WEST SIDE COUNTERBALANCE - BASCULE IS IN CLOSED POSITION; COUNTERWEIGHT AT TOP OF PIT - NOTE VERNACULAR WEIGHTS HUNG ON COUNTERWEIGHT TO INCREASE WEIGHT
41. VIEW OF WEST BASCULE LEAF LOCKING PINS IN EXTENDED POSITION - PINS FIT INTO MATCHING BUSHINGS ON THE EAST LEAF AND SECURE THE EAST AND WEST SECTIONS WHEN THE BRIDGE IS DOWN.
42. VIEW LOOKING WEST AT RAIL AND BASCULE DECK SECTION.
43. OBLIQUE VIEW OF RAILS AND BASCULE DECK SECTION AT BREAK BETWEEN EAST AND WEST LEAFS.
44. VIEW OF BRONZE DEDICATION PLAQUE LOCATED ON STOREHOUSE, EAST ABUTMENT
45. VIEW OF BRONZE BUILDERS PLATE LOCATED ON NORTH SIDE AT OUTERMOST END OF WESTERN APPROACH WALL
46. VIEW OF BRONZE ENGINEERS/INSPECTORS PLAQUE LOCATED ON SOUTH SIDE OF WESTERN APPROACH WALL


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