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U.S. Route 4 Bridge

Photos 

Photo taken by Historic American Engineering Record

View photos at Library of Congress

BH Photo #160947

Map 

Facts 

Overview
Lost Pratt through truss bridge over Mascoma River on U.S. 4
Location
Grafton County, New Hampshire
Status
Replaced by new bridge
History
Built 1940; replaced 1993
Builders
- John W. Childs (Engineer)
- R.G. Watkins & Son of Amesbury, Massachusetts (Contractor)
Design
Riveted, 7-panel Pratt through truss
Dimensions
Length of largest span: 150.9 ft.
Total length: 164.1 ft.
Deck width: 25.9 ft.
Vertical clearance above deck: 13.5 ft.
Recognition
Eligible for the National Register of Historic Places
Also called
US4 Mascoma River Bridge
Approximate latitude, longitude
+43.64372, -72.11300   (decimal degrees)
43°38'37" N, 72°06'47" W   (degrees°minutes'seconds")
Approximate UTM coordinates
18/732847/4836353 (zone/easting/northing)
Quadrangle map:
Canaan
Inventory number
BH 44770 (Bridgehunter.com ID)

Update Log 

  • June 28, 2015: Updated by Royce and Bobette Haley: changed coordinates per Dom Morrison
  • April 4, 2010: Added by Robert Stephenson

Sources 

  • Robert Stephenson - seinfeld99 [at] yahoo [dot] com
  • HAER NH-19 - U.S. Route 4 Bridge, Spanning Mascoma River
  • Royce and Bobette Haley - roycehaley111 [at] yahoo [dot] com

Comments 

U.S. Route 4 Bridge
Posted June 30, 2015, by Don Morrison

Wow!

Royce;

Thanks for the message agreeing with my opinion on this location. I don't remember adding the comment, but at least we finally got the location correct.

Did you arrive at this bridge via the to-do list? I sometimes look for bridges on the list and may have been doing some to-dos when I wrote that message.

Sometimes you find something really interesting on the to-do list. Here is one I was looking to correct (the location information of) two years ago. 8^)

http://bridgehunter.com/ia/fayette/quinn-creek/

U.S. Route 4 Bridge
Posted June 28, 2015, by Royce and Bobette Haley (roycehaley111 [at] yahoo [dot] com)

Hey Don

Just saw this from last year-U.S. Route 4 Bridge

Posted March 23, 2014, by Don Morrison

Does anyone agree that this bridge was probably located at 43.643513,-72.112888 instead of where it's presently shown?

Some of the HAER photos were obviously taken from a nearby bridge, and these coordinates are where Rte. 4 crosses the Mascoma in close proximity to one of the many rail to trail bridges in this area.

You are correct with those Coordinates-Royce

U.S. Route 4 Bridge
Posted March 23, 2014, by Don Morrison

Does anyone agree that this bridge was probably located at 43.643513,-72.112888 instead of where it's presently shown?

Some of the HAER photos were obviously taken from a nearby bridge, and these coordinates are where Rte. 4 crosses the Mascoma in close proximity to one of the many rail to trail bridges in this area.

U.S. Route 4 Bridge
Posted March 23, 2014, by ArtS (asuckewer [at] knite [dot] com)

Found this, interesting but rather unfriendly terms. Also odd that it came up in a search of recent updates considering the bridge has been gone so long:

http://www.nh.gov/dot/org/projectdevelopment/bridgedesign/do...