Bridgehunter.com | Allegheny Tunnel

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Photo taken by Jodi Christman on 7/22/2011

Overview: Tunnel under Allegheny Mountains on Norfolk Southern Railway (formerly PRR)
Location: Gallitzin, Blair County, Pennsylvania, and Cambria County, Pennsylvania
Status: Open to traffic
History: Constructed 1851-854, Reconstructed in 1941, Adapted for COFC trains in 1994-1995
Builders: - Edward Miller (Co-Chief Engineer)
- Herman Haupt (Co-Chief Engineer)
- John Rutter & Son (Contractors)
- Thomas Reilly (Engineer)
- Thomas Seabrook (Principle Asst. Engineer)
Design: It is an example of a mid-19th century railroad tunnel featuring ashlar masonry portals and a brick arch lining.
Dimensions: Total length: 3,605.0 ft. (0.7 mi.)
Deck width: 21.6 ft.
Vertical clearance above deck: 19.4 ft.
Also called: Summit Tunnel
Approximate latitude, longitude: +40.48154, -78.55074 (decimal degrees)
40°28'54" N, 78°33'03" W (degrees°minutes'seconds")
Approximate UTM coordinates: 17/707601/4484087 (zone/easting/northing)
Elevation: 2167 ft. above sea level
USGS topographic map: Cresson
Inventory number: BH 49338 (Bridgehunter.com ID)