Blackledge River Railroad Bridge was created in 1912.
Pequonnock River Railroad Bridge was created in 1998.
Norwalk River Railroad Bridge was created in 1896.
Housatonic River Railroad Bridge was created in 1904.
Saugatuck River Railroad Bridge was created in 1905.
Mianus River Railroad Bridge was created in 1904.
River Road Stone Arch Railroad Bridge was created in 1887.
Great River Railroad was created in 1981.
Red River Railroad was created in 1835.
Illinois River Railroad was created in 1853.
Hudson River Railroad was created in 1846.
Maurice River Railroad was created in 1887.
Flint River Railroad was created in 1871.