Historic Photographs

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New Hampshire

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Manchester

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Cohas Brook Bridge, Spanning Cohas Brook, Highway 28 (South Willow Str, Manchester, Hillsborough County, NH



See 38 maps of this location


B&W Photos

HB783067
View From West, Showing East Elevation, Looking Downstream

HB783068
View From Northwest, Showing Elevation From Old Fieldstone Abutment West Of Bridge, Municipal Gas Line

HB783069
View From South, Showing State Highway #28, Deck And Railings Of Bridge

HB783070
View From Southwest, Showing West Elevation

HB783071
View From South, Showing Hast Elevation

HB783072
View From West, Showing Detail Of North Approach Span And Incised Panel Of Reinforced Railing

HB783073
View From Southwest, Showing Detail Of Twin Reinforced Concrete Parabolic Arch Ribs, Old Harvey Road Fieldstone Abutment In Background

HB783074
View From West, Showing Detail Of Arch Rib And Bents, Looking Downstream

HB783075
View Of Underside Of North Abutment Span, Showing Main Arches And Deck Beams

HB783076
View From South, Showing Detail Of Piers Of Transverse Bracing

HB783077
View From Hast, Showing Old Harvey Road Bridge North Abutment, Hailing Of North Approach To Cohas Brook Bridge In Background

HB783078
Upstream Elevation And Plan

HB783079
Downstream Elevation

HB783080
Detail Of Column For Arch Span

HB783081
Details Of Bents

HB783082
Slab And Girder Details

HB783083
Concrete Placement Diagram


Data Pages


Photo Caption Pages


Item Title


Location
Highway 28 (South Willow Str, Manchester, NH

Find maps of Manchester, NH


Created/Published
Documentation compiled after 1968.

Notes
Survey number HAER NH-9
Building/structure dates: 1929 initial construction
Significance: The bridge is significant as the first example of an open spandrel, reinforced concrete, parabolic arch bridge erected in New Hampshire, and one of only three, apparently, in the state. The structure is significant for its association with the designer, Harold E. Langley, an important bridge engineer with the New Hampshire Department of Public Works and Highways during the second quarter of the 20th century; for its proximity to the site of several earlier crossings over the Cohas Brook; and for its association with the development of the city and state transportation network.

Subjects
Concrete Arch Bridges
Vehicular Bridges


Related Names
Langley, Harold E.
Childs, John N.


Collection
Historic American Engineering Record (Library of Congress)

Contents
Photograph caption(s): 
1. VIEW FROM WEST, SHOWING EAST ELEVATION, LOOKING DOWNSTREAM
2. VIEW FROM NORTHWEST, SHOWING ELEVATION FROM OLD FIELDSTONE ABUTMENT WEST OF BRIDGE, MUNICIPAL GAS LINE
3. VIEW FROM SOUTH, SHOWING STATE HIGHWAY #28, DECK AND RAILINGS OF BRIDGE
4. VIEW FROM SOUTHWEST, SHOWING WEST ELEVATION
5. VIEW FROM SOUTH, SHOWING HAST ELEVATION
6. VIEW FROM WEST, SHOWING DETAIL OF NORTH APPROACH SPAN AND INCISED PANEL OF REINFORCED RAILING
7. VIEW FROM SOUTHWEST, SHOWING DETAIL OF TWIN REINFORCED CONCRETE PARABOLIC ARCH RIBS, OLD HARVEY ROAD FIELDSTONE ABUTMENT IN BACKGROUND
8. VIEW FROM WEST, SHOWING DETAIL OF ARCH RIB AND BENTS, LOOKING DOWNSTREAM
9. VIEW OF UNDERSIDE OF NORTH ABUTMENT SPAN, SHOWING MAIN ARCHES AND DECK BEAMS
10. VIEW FROM SOUTH, SHOWING DETAIL OF PIERS OF TRANSVERSE BRACING
11. VIEW FROM HAST, SHOWING OLD HARVEY ROAD BRIDGE NORTH ABUTMENT, HAILING OF NORTH APPROACH TO COHAS BROOK BRIDGE IN BACKGROUND
12. UPSTREAM ELEVATION AND PLAN
13. DOWNSTREAM ELEVATION
14. DETAIL OF COLUMN FOR ARCH SPAN
15. DETAILS OF BENTS
16. SLAB AND GIRDER DETAILS
17. CONCRETE PLACEMENT DIAGRAM


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