Duncan Tunnel
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The Duncan Tunnel (also known as the Edwardsville Tunnel) is a railroad tunnel in Edwardsville, Floyd County, Indiana, USA. At Script error: No such module "convert". long, it is the longest tunnel in Indiana. The tunnel was initially built for the Air Line, who were unable to find a suitable route over the Floyds Knobs, so they decided to tunnel through them.[1] The tunnel was completed by the Southern Railway in 1881 at a total cost of $1 million.[2] It is still in use by the Norfolk Southern Railway.[3] The tunnel passes beneath I-64 intersection #118.
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