Tuthilltown Bridge is located in the Town of Gardiner in Ulster County, New York, United States, approximately 1 miles (1.6 km) west of the eponymous hamlet. It carries US 44/NY 55 across the north-flowing Wallkill River just downstream from where it is joined by the Shawangunk Kill, its largest tributary. It is a steel through truss bridge built in 1938 and reconstructed in 1993