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Hamp Road Bridge


Here it is, right on the very end of Hamp Road where it intersects Queen Road. Hamp Road is a gravel road.

Photo taken by Andrew Pearce in August 2012


BH Photo #238045

Street View 


"The bridge carries a narrow, lightly travelled, unimproved country road over a minor stream in a sparsely developed area. It is located in a wooded rural setting. Within sight of the bridge are the stone abutments of a non-extant railroad bridge. The unspoiled and protected setting enhances the significance of the span." "SUMMARY The 4-panel pin-connected half hip Pratt pony truss bridge is supported on random ashlar abutments with wingwalls. The diagonals are joined to the chords and through bearing assembly with cast iron connectors, a detail found on another WIBC span in the county (10XXL95). This span is well preserved, and it is one of the most distinctive and complete examples of the over 20 Pratt half hip pony trusses in the county. Its state of preservation and construction details make it significant. STRUCTURE # 10WD120 ALTERATION DT 1973-1974 INFOR MATION BIBLIOGRAPHY: Darnell, Victor C. A Directory of American Bridge-Building Companies, 1840-1900. Washington D.C.: Society for Industrial Archeology, 1984. PHYSICAL DESCRIPTION: The four-panel, pin-connected, half-hip Pratt pony truss bridge is supported on random ashlar abutments with wingwalls. The top chord and inclined end posts are riveted box members composed of shallow channels, toe out, with cover plates and widely spaced battens. Vertical members are back-to-back angles joined by lattice. The bottom chord and diagonals are stamped roundheaded eyebars. Pin connections are through gusset plates riveted to the vertical ends. An unusual feature is the cast iron bearing shoes with rollers at both the expansion bearing plate and the fixed end. Cast iron connectors are also used for the node connecting the inclined end posts and top chord. The diagonals pass through the node and are secured by bolts. The original lattice railings remain. Alterations are not intrusive and include the addition of outriggers, small welded reinforcing plates at panel points, duplicate diagonals welded to the outside of the top chords in the end panels, and small repairs. A new deck has been added. The bottom chord appears to be sprung. HISTORICAL AND TECHNOLOGICAL SIGNIFICANCE: Although the fabricator and date of construction are not documented, the ca. 1895 pin-connected Pratt pony truss bridge appears to be very like the "Low Truss, Half Slope End Posts" bridge described in the 1885 Wrought Iron Bridge Company Illustrated Pamphlet. The castings used at the bearings and the node between the end posts and top chord are unusual construction details that distinguish the span as technologically significant (criterion C). The span, one of over 20 Pratt half hip pony truss bridges in Hunterdon County, is a valuable example of both an important local bridge type and idiosyncratic details. It is attributed to The Wrought Iron Bridge Company based on those details."

see: http://www.state.nj.us/transportation/works/environment/pdf/...


Pratt pony truss bridge over Alexauken Creek on Hamp Road
Hunterdon County, New Jersey
Closed after damage from Hurricane Ida
Built ca. 1880's; rehabilitated 1994
- Wrought Iron Bridge Co. of Canton, Ohio
Half-hip Pratt pony truss
Length of largest span: 54.1 ft.
Total length: 55.1 ft.
Deck width: 13.1 ft.
Eligible for the National Register of Historic Places
Approximate latitude, longitude
+40.39722, -74.92667   (decimal degrees)
40°23'50" N, 74°55'36" W   (degrees°minutes'seconds")
Approximate UTM coordinates
18/506223/4471849 (zone/easting/northing)
Quadrangle map:
Average daily traffic (as of 2017)
Inventory numbers
NJ 10WD120 (New Jersey bridge number)
BH 25260 (Bridgehunter.com ID)
Inspection report (as of April 2017)
Overall condition: Fair
Superstructure condition rating: Fair (5 out of 9)
Substructure condition rating: Good (7 out of 9)
Deck condition rating: Good (7 out of 9)
Sufficiency rating: 29 (out of 100)
View more at BridgeReports.com

Update Log 

  • September 4, 2021: New photo from Art Suckewer
  • September 21, 2020: New photos from Patrick Gurwell
  • January 9, 2019: New Street View added by Dana and Kay Klein
  • March 15, 2016: Updated by Art Suckewer: Corrected build year based on reference in the Strimples Mill Bridge Historic Register submission draft. move the mill name to the description
  • August 25, 2012: Updated by Andrew Pearce: added data and pictures


  • Art Suckewer - Asuckewer [at] knite [dot] com
  • Dana and Kay Klein
  • Patrick Gurwell - pgurwell [at] gmail [dot] com