In 1865 the Articles of Association for the Cooperstown and Susquehanna Valley R.R. Company (C&SVRR) were filed. The stated purpose was to construct a railroad "from a point at or near the Village of Cooperstown to a point at or near Colliersville forming a junction with the Albany and Susquehanna Rail Road". In February 1868 work was started on the line. However, the first train was not run until July 14, 1869. The road was broad gauge () to be compatible with the Albany & Susquehanna. On May 28, 1876, the entire was "narrowed up", "the work being completed by 4 p.m."