Groton Bridge, Conger Blvd. Groton

Brothers Charles and Lyman Perrigo started the Groton Iron Works in 1852, while Daniel Spencer and Frederick Avery began the Groton Separator Works in 1847 to manufacture agricultural implements. By 1877, they had joined to form Perrigo and Avery, incorporating as the Groton Iron Bridge Works in that year. They built hundreds of bridges over the years, and some of them in Tompkins County survive, including the Nubia Bridge, preserved in the village of Groton with a historical marker noting its date of construction, 1889.