Claim: Jenson Tunnel, located on private property northeast of Rock Island, is the first and only known railroad tunnel in Oklahoma, with a width of less than 15 feet, that is now used by the Kansas City Southern.
Evidence: Jenson Tunnel is located on private property northeast of Rock Island and is the only known railroad tunnel in Oklahoma. Jenson Railroad Tunnel is the first and only railroad tunnel in the present state of Oklahoma. Jenson Railroad Tunnel 14.0 feet It is now primarily used by the Kansas City Southern Railroad (KCS), and is sometimes referred to as the KCS - Jenson Tunnel.