Colwell Cut Viaduct Explained

Colwell Cut Viaduct
Coordinates:	40.9369°N -79.3631°W
Built:	1922
Builder:	Concrete Steel Bridge Co.
Architecture:	Open-spandrel arch
Added:	June 22, 1988
Area:	less than one acre
Refnum:	88000796

Colwell Cut Viaduct, also known as Hogback Hill Bridge, is a historic concrete arch bridge located at Mahoning Township in Armstrong County, Pennsylvania. It was built in 1922, and is a 220adj=midNaNadj=mid three-span bridge, with a 128adj=midNaNadj=mid main span. It crosses the Pittsburg and Shawmut Railroad.^[1]

It was listed on the National Register of Historic Places in 1988.

Notes and References

1. Web site: National Historic Landmarks & National Register of Historic Places in Pennsylvania. CRGIS: Cultural Resources Geographic Information System. Searchable database. 2012-08-24. 2007-07-21. https://web.archive.org/web/20070721014609/https://www.dot7.state.pa.us/ce/SelectWelcome.asp. dead. Note: This includes Web site: [{{NRHP-PA|H000242_01D.pdf}} National Register of Historic Places Inventory Nomination Form: Colwell Cut Viaduct]. 2012-08-24. T.R. Sitler. PDF. July 1982.