Blisworth Tunnel Blisworth Tunnel Blisworth Tunnel is a canal tunnel on the Grand Union Canal in Northamptonshire, England, between the villages of Stoke Bruerne at the southern end and Blisworth at the northern end. The northern end is about from the northern end of the Grand Junction Canal at Braunston, Northamptonshire and the southern end about . At 3,076 yards (2,813m) long it is the third-longest navigable canal tunnel on the UK canal network after Standedge Tunnel and Dudley Tunnel (and the ninth-longest canal tunnel in the world). At its deepest point it is "ca."143 feet ("ca."43m) below ground level. The tunnel
Cincinnati and Whitewater Canal Tunnel the portion of U.S. Route 50 that travels over the tunnel. Despite the efforts spent on building the Whitewater Canal, it was abandoned in 1856 after numerous floods had destroyed much of its length. This resulted in the abandonment of the canal tunnel, a period of stagnation that ended in 1863 when a railroad company began a twenty-five-year period of using it as an ordinary rail tunnel. Since the rail line ceased operation in 1888, the canal has become completely unusable, having silted up almost all the way to the ceiling. However, the tunnel has not been completely forgotten; the