7 votes

Rollins Farm Overpass 29-09-P01


Southeast By 125 Degrees, Northwest Portal. Note The Bridge Has Three Trusses And Two Lanes Of Unequal Width. The Larger Lane Was For Vehicles And Farm Machinery, While The Smaller Lane Was For Animals And Possibly Pedestrians

Photo taken by Jet Lowe for the Historic American Engineering Record

View photos at Library of Congress

BH Photo #222048


Rollins Farm Bridge is one of possibly seven standing boxed pony timber bridges in North America, and one of four in New Hampshire. It is the only example of the numerous overhead roadway bridges built by the Boston & Maine Railroad surviving in situ. It is also the only example with three trusses and two lanes.

-- Historic American Engineering Record


Howe pony truss bridge over Boston & Maine Railroad on Old Ham Road
Strafford County, New Hampshire
Reported as closed to all traffic except snowmobiles in winter
Future prospects
Reported as owned by local snowmobile club
Built 1904 rebuilt 1929
- Boston & Maine Railroad (BM)
3 covered Howe Trusses, 2 carrying road while one helps carry pedestrians and animals
Total length: 43.0 ft.
Also called
Clement Road Ext.
Approximate latitude, longitude
+43.22311, -70.85206   (decimal degrees)
43°13'23" N, 70°51'07" W   (degrees°minutes'seconds")
Approximate UTM coordinates
19/349587/4787256 (zone/easting/northing)
Quadrangle map:
Dover East
Inventory numbers
WGCB 29-09-P01 (World Guide to Covered Bridges number)
BH 50606 (Bridgehunter.com ID)

Update Log 

  • May 30, 2020: New photo from Geoff Hubbs
  • April 17, 2014: Updated by Alexander D. Mitchell IV: Added photos, updated (speculatory) status
  • December 18, 2011: Updated by J.P.: Added categories "HAER documented", "Skewed", "Boston & Maine Railroad"


  • J.P. - wildcatjon2000 [at] gmail [dot] com
  • HAER NH-44 - Rollins Farm Bridge, Spanning Boston & Maine Railroad at Ham Road, Rollinsford, Strafford County, NH
  • Alexander D. Mitchell IV
  • Geoff Hubbs


Rollins Farm Overpass 29-09-P01
Posted October 28, 2021, by Will Truax (Bridgewright [at] gmail [dot] com)

See the thread of comments at http://bridgehunter.com/ca/yuba/oregon-creek/ as a way of understanding how and why I likewise continue to respectfully disagree with this bridges stated truss typology.

Rollins Farm Overpass
Posted August 2, 2015, by Matt Lohry

I have to respectfully disagree; Photo #5 clearly shows a Howe configuration. Queen post bridges have only 3 panels total; this bridge has 4.