This is part of a biannual blog series highlighting the agreement documents executed by PA SHPO in accordance with Section 106 of the National Historic Preservation Act and its implementing regulations.
Category: Bridges (Page 1 of 6)
On large stained and moss-covered stone masonry abutments over a single line of tracks in Tredyffrin Township, Chester County rested a dinosaur, a wrought iron relic of the past originally constructed to support the industry of a developing nation. Its appearance was worn and weathered from over 140 years of service.
Random holes and a mixed bag of fastener types and sizes littered the visible faces. The original railroad floor system was long gone and replaced with a timber vehicular deck. Its live load carrying capacity was a mere fraction of what it once was. However, under all of this rust was a diamond, a rare and complete example of a wrought iron pin-connected warren pony truss with built-up corrugated diagonal tension members, the last of its kind.
This is the story of relocation and reuse, adaptive reuse, of the last known remaining pin-connected wrought iron Warren pony truss in Pennsylvania – The Howellville Truss (2004RE01890).
Railroads played a vital role in Pennsylvania’s economic development, particularly during the Industrial Revolution and beyond. They facilitated the transportation of goods, raw materials, and people, fostering industrial growth, urbanization, and the expansion of markets. The construction of railroads like the Beech Creek Railroad and the Buffalo, Rochester & Pittsburgh Railroad, that primarily transported coal and other materials to homes and factories throughout Pennsylvania, played a significant role in the industrialization of the state.
The Howellville Truss Bridge is a great example of a Warren Pony Truss bridge, originally built in 1879 to serve the Northern Central Railway, which ran between Baltimore, Maryland, and Sunbury, Pennsylvania.
At the end of July, PennDOT celebrated the relocation of a historic bowstring truss bridge in Schuylkill County onto Schuylkill River Greenways’ trail system with a ribbon cutting ceremony.
Bridges are a part of everyone’s lives, we walk across them, drive across them, and use them for cover in the rain. But do we ever really stop to appreciate the history of these bridges? My internship this summer focused a lot on historic bridges, especially stone arch bridge, and helped me to appreciate their value in the community.
The practice of historic preservation is like a family heirloom, passed down from one generation to the next so that when you get tasked with the role of heirloom keeper, it reminds us to not forget about the past and look to how it has shaped the present.
“This bridge will triumphantly typify the trail-blazing strategy…” so said Pennsylvania Governor John S. Fine in 1954 about the soon to be constructed Hawk Falls Bridge, finishing with “that took the Pennsylvania Turnpike System across streams of great width and turbulence…and through the rocky cores of mighty mountains.”
Last year, we announced PennDOT’s new funding source for historic metal truss bridges and highlighted two rehabilitation projects that were selected for the new program. With those projects well on their way, the Historic Metal Truss Bridge Capital Rehabilitation Program has since added four additional bridge projects across the Commonwealth.
Spring is around the corner, and long-requested updates to Surveyor Manager functionality are the among the first new blooms of the season!
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