Colwell Cut Viaduct

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 220-foot-long (67 m) three-span bridge, with a 128-foot-long (39 m) main span. It crosses the Pittsburg and Shawmut Railroad.^[2]

Colwell Cut Viaduct
U.S. National Register of Historic Places
Colwell Cut Viaduct, 1982
Show map of Pennsylvania Show map of the United States
Location	Legislative Route 66 over the Pittsburg and Shawmut Railroad southwest of Seminole, Mahoning Township, Pennsylvania
Coordinates	40°56′13″N 79°21′47″W
Area	less than one acre
Built	1922
Built by	Concrete Steel Bridge Co.
Architectural style	Open-spandrel arch
MPS	Highway Bridges Owned by the Commonwealth of Pennsylvania, Department of Transportation TR
NRHP reference No.	88000796[1]
Added to NRHP	June 22, 1988

It was listed on the National Register of Historic Places in 1988.^[1]

References

1. "National Register Information System". National Register of Historic Places. National Park Service. July 9, 2010.
2. "National Historic Landmarks & National Register of Historic Places in Pennsylvania". CRGIS: Cultural Resources Geographic Information System. Archived from the original (Searchable database) on 2007-07-21. Retrieved 2012-08-24. Note: This includes T.R. Sitler (July 1982). "National Register of Historic Places Inventory Nomination Form: Colwell Cut Viaduct" (PDF). Retrieved 2012-08-24.