Pine Creek Park Bridge
Encyclopedia
The Pine Creek Park Bridge, also known as Mill Hill Road Bridge, is a Pratt pony truss bridge built in 1872. It was listed on the National Register of Historic Places
National Register of Historic Places
The National Register of Historic Places is the United States government's official list of districts, sites, buildings, structures, and objects deemed worthy of preservation...

 in 1992.

It is significant as a rare example of an early iron bridge, from an era when bridge designs were changing and unsettled. It was produced by the Keystone Bridge Company
Keystone Bridge Company
The Keystone Bridge Company, founded in 1865 by Andrew Carnegie, was an important American bridge building company. It was one of the 28 companies absorbed into the American Bridge Company in 1900. The company advertised its services for building steel, iron,wooden railway and road bridges. It held...

of Pittsburgh, Pennsylvania, and is one of few surviving ones made by its engineer J. H. Linville.
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