 A two-block portion of NY 397 through the village of Altamont follows a portion of the former Albany and Schoharie Plank Road, which represents a majority of current-day NY 146 and some of NY 443.The plank road, which was incorporated in 1849 and abandoned in 1866, ran from the village of Schoharie and to meet with the First Great Western Turnpike in the town of Guilderland.NY 397 was assigned to its current alignment as part of the 1930 renumbering of state highways in New York and has not had any major changes since.