Although the entirety of modern NY 408 was state-maintained by 1926, only one section of the route—the portion designated as part of legislative Route 15—was assigned a posted route number by that time. In the mid-1920s, this piece was designated as part of NY 36, which initially continued north to Geneseo on modern NY 63.
Although the entire modern NY 408 was state-maintained by 1926, only one section of the route—the portion designated as part of legislative Route 15—was assigned a posted route number at that time. In the mid-1920s, this segment was reclassified as part of NY 36, which initially extended north to Geneseo on modern NY 63.