Pequonnock River Railroad Bridge was created in 1998.
Norwalk River Railroad Bridge was created in 1896.
Housatonic River Railroad Bridge was created in 1904.
Mianus River Railroad Bridge was created in 1904.
Saugatuck River Railroad Bridge was created in 1905.
Blackledge River Railroad Bridge was created in 1912.
River Road Stone Arch Railroad Bridge was created in 1887.
Cass River Railroad was created in 1871.
Western River Railroad was created in 1983.
Red River Railroad was created in 1835.
Great River Railroad was created in 1981.
Sandy River Railroad was created in 1879.
Eel River Railroad was created in 1877.