1 vote

NHCR - Upper Ammonoosuc River Bridge


Bridge as seen from Rt 3

Photo taken by Panoramio user JBTHEMILKER

License: Creative Commons Attribution-NoDerivs (CC BY-ND)

View this photo at panoramio.com

BH Photo #268950

Street View 


Through truss bridge over Upper Ammonoosuc River on New Hampshire Central Railroad
Groveton, Coos County, New Hampshire
Open to traffic
Built in 1883 by Boston Bridge Works
- Boston Bridge Works of Boston, Massachusetts
- Edward S. Shaw of Boston, Massachusetts (Bridge Engineer)
- Isaac M. Story (Chief Engineer)
- New Hampshire & Vermont Railroad (NHVT)
- New Hampshire Central Railroad (NHCR)
Baltimore through truss
Approximate latitude, longitude
+44.59276, -71.51591   (decimal degrees)
44°35'34" N, 71°30'57" W   (degrees°minutes'seconds")
Approximate UTM coordinates
19/300307/4940791 (zone/easting/northing)
Quadrangle map:
Inventory number
BH 58503 (Bridgehunter.com ID)

Update Log 

  • August 23, 2017: New photos from Michael Quiet
  • January 28, 2016: New photos from Mike Garland
  • October 21, 2013: Updated by Luke Harden: Added railroad
  • October 21, 2013: Added by Dave King


  • Mike Garland - Rapier342 [at] comcast [dot] net
  • Dave King - DKinghawkfan [at] hotmail [dot] com
  • Luke
  • Michael Quiet - mquiet [at] gmail [dot] com


NHCR - Upper Ammonoosuc River Bridge
Posted August 23, 2017, by Michael Quiet (mquiet [at] gmail [dot] com)

Here is another significant Cos County Bridge. This is quite early for a fully riveted truss bridge, a testament to the innovative nature of the Boston Bridge Works. Its certainly among the oldest riveted bridges nationally. Its also a very early (oldest extant?) example of a Baltimore truss. Tied together, these two facts make this bridge historically and technologically significant.

Aside from that though, its quite a visually appeasing bridge. All members are built up boxes on the truss web, giving it a airy and intricate look. Given the light traffic of the NHCR this bridge should be safe for the time being