Originally constructed in 1850 and rebuilt in 1889, the Contoocook Railroad covered bridge is the oldest surviving covered railroad bridge in the United States. The bridge, a double-web town lattice design, originally served the Concord and Claremont Railroad and later served the Boston and Maine when it was acquired in 1887. The bridge was washed off its abutments twice in its lifetime, first due to a flood in the Contoocook River in 1936 and then again by a hurricane in 1939. The bridge served as a railroad bridge until 1962….
