Indicated by artifacts found near Lake Sepasco , a small lake along NY 308 , the highway began its history in about 1685 , when a group of Native Americans called the Sepasco built the Sepasco Trail ; this trail ran from the Hudson River , eastward through modern-day Rhinebeck ( then Sepasco or Sepascoot ) , and ended at Lake Sepasco , following roughly Route 308 and its side roads .
The road began its history in about 1685 , when a group of Native Americans built the Sepasco Trail .