Pennsylvania Railroad District, also known as Conrail: Little Juniata River Bridges and Tunnels or Bridges and Tunnels , is a national historic district located in Spruce Creek Township, Morris Township, and Warriors Mark Township in Huntingdon County, Pennsylvania and Tyrone Township in Blair County, Pennsylvania. It consists of ten stone arch bridges, two parallel tunnels, and the right-of-way that links them. This 5.15-mile section had the most bridges and tunnels per mile to carry the Pennsylvania Railroad right-of-way. The bridges were built between 1886 and 1902, and are multiple semi-circular arch bridges built of stone ashlar. An original tunnel was built in 1850, and is a 1,151-foot long brick arched tunnel. The parallel tunnel was built in 1900, and is a 1,075-foot long brick-arched tunnel.
Fuente: Wikipedia.org
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Huntingdon, Estados Unidos
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