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McGregor Bridge

Hillsborough County, New Hampshire

Photos 

Bridge Street Bridge

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View photos at Library of Congress

BH Photo #313893

Map 

Description 

The Corrugated Metal Co. (Just prior to their changing the company name to BIBCO) was contracted to build this bridge in 1881 for the sum of $67,000 by The Amoskeag Mfg. Co. Of its two decks the upper served city traffic, and the lower served mill operations and employees.

Th upper deck was also supported by long approach spans, and a Lenticular Pony Truss which bridged an adjacent canal on the eastern bank.

Facts 

Overview
Lost Lenticular Truss Bridge over Merrimack River on Bridge Street
Location
Manchester, Hillsborough County, New Hampshire
Status
Destroyed by flooding
History
Built in 1881 by The Corrugated Metal Co. - Lost 20 March 1936 to the "Great Flood"
Builder
- Corrugated Metal Co. of East Berlin, Connecticut [also known as Berlin Iron Bridge Co.]
Design
Twin deck (both a through & deck truss) three span Lenticular Deck Truss
Dimensions
Length of largest span: 140.0 ft.
Total length: 930.0 ft.
Also called
Bridge Street Bridge
Approximate latitude, longitude
+42.99396, -71.46945   (decimal degrees)
42°59'38" N, 71°28'10" W   (degrees°minutes'seconds")
Approximate UTM coordinates
19/298694/4763102 (zone/easting/northing)
Quadrangle map:
Manchester South
Inventory number
BH 65518 (Bridgehunter.com ID)

Categories 

19th Century (6,593)
Berlin Iron Bridge Co. (147)
Built 1881 (114)
Built during 1880s (1,742)
Corrugated Metal Co. (14)
Deck truss (1,575)
Destroyed by flood (382)
Great Flood of 1936 (9)
Hillsborough County, New Hampshire (90)
Lenticular deck truss (3)
Lenticular pony truss (74)
 Lenticular truss (142)
Lost (20,672)
Lost 1936 (70)
Lost during 1930s (441)
Manchester, New Hampshire (21)
New Hampshire (587)
Pony truss (15,393)
Span length 125-175 feet (3,902)
Total length 500-1000 feet (2,611)
Truss (30,481)

Update Log 

  • May 15, 2015: New photo from Will Truax
  • March 29, 2015: New photo from Will Truax
  • March 17, 2015: New photos from Will Truax
  • January 31, 2015: New photo from Will Truax
  • January 17, 2015: Updated by Will Truax: Added contract price
  • January 16, 2015: Updated by Will Truax: Fixed typo

Related Bridges 

Sources 

  • Will Truax - Bridgewright [at] gmail [dot] com
  • High Water - Rebuilding bridges after the floods of 1927 and 1936
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Comments 

McGregor Bridge
Posted January 17, 2015, by Will Truax (Bridgewright [at] gmail [dot] com)

I came across a bit of information which had me editing an older blog entry. It also led to the collection of enough information to recently add The McGregor here.

The Blog piece, while more about the history of the crossing than that of The McGregor, it does hold additional information, not seen here on the data page.

For those interested in the history of BIBCO, it also pictures a company advertisement which seems to be the only image of this bridge where its structure can be seen in its entirety.

https://bridgewright.wordpress.com/2013/03/31/a-riddles-answ...