Glen Gardner Pony Pratt Truss Bridge

The Glen Gardner Pony Pratt Truss Bridge is a historic pony Pratt truss bridge on School Street (formerly Mill Street) crossing the Spruce Run in Glen Gardner of Hunterdon County, New Jersey. It was designed by Francis C. Lowthorp and built in 1870 by William Cowin of Lambertville, New Jersey.^[3] The bridge was added to the National Register of Historic Places on September 22, 1977 for its significance in engineering, industry and transportation. It is one of the few early examples of iron Pratt truss bridges remaining in the United States.^[4] It was later documented by the Historic American Engineering Record in 1991.^[5]

Glen Gardner Pony Pratt Truss Bridge
U.S. National Register of Historic Places
New Jersey Register of Historic Places
Glen Gardner Bridge in 1991
Show map of Hunterdon County, New Jersey Show map of New Jersey Show map of the United States
Location	School Street (Mill Street) over Spruce Run Glen Gardner, New Jersey
Coordinates	40°42′04.5″N 74°56′36.5″W
Built	1870 (1870)
Built by	William Cowin
Architect	Francis C. Lowthorp
Architectural style	Pratt truss
NRHP reference No.	77000876[1]
NJRHP No.	1592[2]
Significant dates
Added to NRHP	September 22, 1977
Designated NJRHP	August 5, 1976

Description

The Glen Gardner bridge is one of three remaining composite cast iron and wrought iron Pratt truss bridges built by Cowin in New Jersey. The others are the New Hampton Pony Pratt Truss Bridge (1868) in New Hampton and the Main Street Bridge (1870) in Clinton. The single-span bridge is 84 feet (26 m) long and 16.6 feet (5.1 m) wide.^[3] It features a pedestrian walkway with a decorative cast-iron railing.^[4]

Gallery

• 
  View looking east
• 
  View looking west
• 
  Railing detail, looking north

See also

• National Register of Historic Places listings in Hunterdon County, New Jersey
• List of bridges documented by the Historic American Engineering Record in New Jersey
• List of bridges on the National Register of Historic Places in New Jersey

References

1. "National Register Information System – (#77000876)". National Register of Historic Places. National Park Service. November 2, 2013.
2. "New Jersey and National Registers of Historic Places – Hunterdon County" (PDF). New Jersey Department of Environmental Protection – Historic Preservation Office. June 23, 2021. p. 7.
3. "School Street over Spruce Run River, Glen Gardner Borough" (PDF). New Jersey Historic Bridge Survey: Hunterdon County. New Jersey Department of Transportation. November 12, 2012. p. 184.
4. Karschner, Terry (December 1975). "National Register of Historic Places Inventory/Nomination: Glen Gardner Pony Pratt Truss Bridge". National Park Service. With accompanying photo
5. "Glen Gardner Bridge, Spanning Spruce Run". Historic American Engineering Record. 1991.

External links

• Media related to Glen Gardner Pony Pratt Truss Bridge at Wikimedia Commons
• Historic American Engineering Record (HAER) No. NJ-92, "Glen Gardner Bridge, Spanning Spruce Run, Glen Gardner, Hunterdon County, NJ", 15 photos, 1 color transparency, 3 data pages, 2 photo caption pages
• School Street Bridge at Structurae