The Whitehall Tunnel in

Allegheny County, Pennsylvania Allegheny County () is a county in the Commonwealth of Pennsylvania. It is located in Southwestern Pennsylvania. As of the 2020 census, the population was 1,250,578, making it the state's second-most populous county, following Philadelphia Co ...

was originally built by the

B&O Railroad The Baltimore and Ohio Railroad was the first common carrier railroad and the oldest railroad in the United States, with its first section opening in 1830. Merchants from Baltimore, which had benefited to some extent from the construction of ...

in 1899 as a double-track tunnel. The tunnel was completed in 1900. It was part of the

Baltimore and Ohio Short Line Railroad The Baltimore and Ohio Short Line Railroad was the successor to the Pittsburgh Southern Railway, and a subsidiary of the B&O Railroad, and was organized as a legal entity 25 February 1885. The railroad was a link in the attempt of the B&O to serv ...

, and allowed the B&O to bypass its former route into Pittsburgh along the Pittsburgh Southern and Little Saw Mill Run Railroad. One worker, Antonio De Bono, was killed during its construction. It is currently a single-track tunnel, owned by the

Allegheny Valley Railroad The Allegheny Valley Railroad is a class III railroad that operates in Western Pennsylvania, and is owned by Carload Express, Inc. AVR acts as a feeder line connecting its many and varied customers to Class I railroads such as CSX Transportat ...

. The tunnel is approached from Glenwood in the south, up a steep grade along the

Streets Run Streets Run is a U.S. Geological Survey. National Hydrography Dataset high-resolution flowline dataThe National Map accessed August 15, 2011 tributary of the Monongahela River in Allegheny County, Pennsylvania. This urban stream drains portions ...

valley to the northern end of the tunnel. The line continues from the southern end to Bruceton, Pennsylvania. Dimensions: at base; at spring line; from top of rail to top of arch rise Engineer: W. T. Manning; Bennet & Talbot, subcontractor, 1901–02

References

Baltimore and Ohio Railroad tunnels Railroad tunnels in Pennsylvania Tunnels in Allegheny County, Pennsylvania {{US-tunnel-stub