 Need by shippers for the Straits of Mackinac train ferry service provided by the Mackinac Transportation Company declined following construction of the Mackinac Bridge in 1957.After cross-Straits of Mackinac railroad car ferry service ended in 1984, the "Chief" lay in mothballs for several years in Cheboygan and Mackinaw City.She was towed to Sault Ste.