Blisworth Tunnel was the only section unfinished. This was despite the tunnel having been under construction for seven years: the gap was filled by a temporary horse-drawn tramway over the top of the hill, with goods being transported from boat to wagon and back again. The tramway, built in 1801, was Northamptonshire's first railway. In March 1805, the tunnel was finally opened and the rails were used to connect the main line of the canal to the River Nene until the branch canal to Northampton was constructed. Until the 1870s travel through the tunnel was only achieved by men lying on their
Stad Ship Tunnel Norwegian Coastal Administration concluded that a tunnel would not be economical. It looked at two sizes, small and large, which would cost respectively. The report concluded that the utility, including saved waiting costs, for shippers have a present value of , respectively, and in saved accident costs. A similar report from 2007 concluded that the tunnel would be economical. The Coastal Administration stated that the differences were because of new and better data. Stad Ship Tunnel The Stad Ship Tunnel () is a proposed canal and tunnel to bypass the Stad peninsula in Selje Municipality in Sogn og Fjordane county,