New York State Thruway Authority Perspective

摘要

Established as a public benefit corporation during 1952, the NYSTA initially performed all of its mapping functions by manually scribing all printed maps and drawings. A common milepost (accurate to 0.1 mi) system was established. This system is currently used in evolved form (0.01 mi accurate). The general position of nearly all highway elements, appurtenances, and structures are referenced in this way. This mapping was augmented with stereographic photogrammetric methods during the early 1990s.