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Campbell's Bridge
U.S. National Register of Historic Places
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Location	Allentown Road over Unami Creek, Milford Square, Pennsylvania
Coordinates	40°25′42″N 75°23′54″W / 40.42833°N 75.39833°W / 40.42833; -75.39833
Area	less than one acre
Built	1906
Architectural style	Camelback open-spandrel arch
MPS	Highway Bridges Owned by the Commonwealth of Pennsylvania, Department of Transportation TR
NRHP reference No.	88000733
Added to NRHP	June 22, 1988

Campbell's Bridge formerly spanned Unami Creek on Allentown Road in Milford Square, Bucks County, Pennsylvania. The 72-foot-long (22 m), 20-foot-wide (6.1 m) bridge was built in 1906-1907. The bridge was designed by A. Oscar Martin and built by the Dailey Construction Company. It was one of the oldest examples of reinforced concrete arch bridges in the United States.

It was placed on the National Register of Historic Places on June 22, 1988.

In October 2005 the section of road containing the bridge was closed so that the single-span bridge could be replaced. The work was scheduled to be completed by December 2005. The new bridge is 120 feet (37 m) long and 32 feet (9.8 m) wide and is a concrete box-beam style.

See also

• National Register of Historic Places listings in Bucks County, Pennsylvania
• List of bridges documented by the Historic American Engineering Record in Pennsylvania
• List of bridges on the National Register of Historic Places in Pennsylvania

References

1. ^ "National Register Information System". National Register of Historic Places. National Park Service. July 9, 2010.
2. Brown, Mark M. (August 1997). "Campbell's Bridge" (PDF). Historic American Engineering Record. Washington, D.C.: Library of Congress. p. 1. Archived from the original (PDF) on 2014-02-04. Retrieved February 1, 2014.
3. Staff writer (October 15, 2004). "Milford Township road construction will start later". The Morning Call. Retrieved October 5, 2012.

External links

• Historic American Engineering Record (HAER) No. PA-451, "Campbell's Bridge, Spanning Unami Creek at Allentown Road (State Route 4027), Milford Square, Bucks County, PA", 8 photos, 1 color transparency, 7 data pages, 1 photo caption page
• HAER No. PA-478, "Structural Study of Pennsylvania Historic Bridges, Pennsylvania Department of Transportation, Harrisburg, Dauphin County, PA", includes structural engineering analysis of Campbell's Bridge

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• Bridges completed in 1907
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