Mason City, Iowa

13th Street Bridge (Cerro Gordo County, Iowa)
Built 1938
Slab bridge over Winnebago River on 12th Street NE
Open to traffic

6th Avenue Bridge (Cerro Gordo County, Iowa)
Lost Concrete deck girder bridge over Willow Creek on 6th Avenue
Replaced by a new bridge

C&NW - Elm Drive Overpass (Cerro Gordo County, Iowa)
Built 1902
Pony/through plate girder bridge over Elm Drive on Abandoned C&NW Railroad
Intact but closed to all traffic

C&NW - Willow Creek Bridge (East) (Cerro Gordo County, Iowa)
Built unknown, Abandoned and Sent to Clear Lake 1983
Pony/through plate girder bridge over Willow Creek on Chicago & North Western Railway Spur
Replaced by a new bridge

C&NW - Winnebago River Bridge (Cerro Gordo County, Iowa)
Built 1901/2
Abandoned warren deck truss bridge over Winnebago River on Abandoned Chicago & Northwestern Railway
Abandoned

Calmus Creek Bridge (Cerro Gordo County, Iowa)
Bridge over Calmus Creek on Holocom Company Road
Open to private traffic only.

CNW - 13th Street Overpass (Cerro Gordo County, Iowa)
Built 1945-48
Abandoned steel stringer bridge over 13th Street NE on Chicago & Northwestern Railway
Derelict/abandoned

CNW - Calmus Creek Bridge (Cerro Gordo County, Iowa)
Built 1947
Abandoned steel stringer bridge over Calmus Creek on Chicago & North Western Railway
Abandoned

CNW - State Street Overpass (Cerro Gordo County, Iowa)
Built 1903
Pony/through plate girder bridge over E. State Street on Abandoned C&NW Railroad
Intact but closed to all traffic

CNW - US18 Overpass (Cerro Gordo County, Iowa)
Built 1957-8
Abandoned steel stringer bridge over US 18 on Chicago & North Western Railway
Abandoned

CNW - Willow Creek Bridge (Cerro Gordo County, Iowa)
Built 1937 using secondhand parts from Dayton, Iowa
Deck plate girder bridge over Willow Creek on abandoned C&NW Railway
Abandoned

Decker Bridge (Cerro Gordo County, Iowa)
Built ca. 1890; Scrapped 1942
Lost Pratt through truss bridge over Winnebago River on 14th Street NE
Removed

Delaware Avenue Bridge (Cerro Gordo County, Iowa)
Built 1917; Replaced 2011
Lost Concrete stringer bridge over Willow Creek on Delaware Avenue
Replaced by a new bridge

DM&E - South Monroe Avenue Overpass (Cerro Gordo County, Iowa)
Built 1966
Steel stringer bridge over S Monroe Avenue on Railroad
Open to traffic

DME - Norris Park Bridge (Cerro Gordo County, Iowa)
Deck plate girder bridge over Winnebago River on DM&E RR
Open to traffic

Holcim Company Road Overpass (Cerro Gordo County, Iowa)
Concrete rigid frame bridge over US 65 on Company Road
Open to private traffic

Holcim Tramway/CNW Overpass (Cerro Gordo County, Iowa)
Lost Girder bridge over Chicago & North Western Railroad on Tramway
Removed

IA122 Cheslea Creek Bridge (Cerro Gordo County, Iowa)
Built 1915; rehabilitated 1962; Replaced 2010
Lost Concrete tee beam bridge over Cheslea Creek on IA 122
Replaced by a new bridge

Main Street Bridge (Cerro Gordo County, Iowa)
Built 1910; Removed ca. 1970
Lost Closed-spandrel arch bridge over Willlow Creek on Main Street
Removed

Main Street Triple Bridge (Cerro Gordo County, Iowa)
Built 1897; Replaced ca. 1908
Lost Pratt through truss bridge over Willow Creek on Main Street and Mason City & Clear Lake Railway
Replaced by a new bridge

Meredith Willson "The Music Man" Footbridge (Cerro Gordo County, Iowa)
Built 1940
Deck truss bridge over Willow Creek on Footpath
Open to pedestrians only

Merrill Avenue Bridge (Cerro Gordo County, Iowa)
Through truss bridge over Willow Creek on Merrill Avenue (Later named Superior Street; Now named Pennsylvania Avenue)
Replaced by a new bridge

MILW - Federal Street Overpass (Cerro Gordo County, Iowa)
Built 1938; Replaced 1966
Steel stringer bridge over South Federal Street on Chicago, Milwaukee, St. Paul & Pacific Railroad
Replaced by a new bridge

MSTL - Willow Creek Bridge (Cerro Gordo County, Iowa)
Lost pratt deck truss bridge over Willow Creek on Railroad
Replaced by a new bridge

Pennsylvania Avenue Bridge (Cerro Gordo County, Iowa)
Built 1917; Replaced 1981
Lost Open-spandrel arch bridge over Willow Creek on Pennsylvania Avenue
Replaced by a new bridge

Quincy-Adams Trail - US18 Overpass (Cerro Gordo County, Iowa)
Built 1958
Steel stringer bridge over 5th Street (IA-122) on Quincy-Adams Trail
Open to pedestrians only

RI - 25th Street NW Overpass (Cerro Gordo County, Iowa)
Destroyed 1974
Lost pony plate girder bridge over 25th Street NW on Chicago, Rock Island & Pacific Railroad
Destroyed by collision

State Street Arch Bridge (Cerro Gordo County, Iowa)
Built 1903
Stone arch bridge over Willow Creek on East State Street
Open to traffic

Stewart Avenue Bridge (Cerro Gordo County, Iowa)
Built 1914; rehabilitated 2003
Arch bridge over Winnebago River on North Carolina Avenue in Mason City
Open to traffic

Stewart Street Bridge (Cerro Gordo County, Iowa)
Replaced 1914 by current NRHP bridge
Bowstring through truss bridge over Winnebago River on Stewart Street
Replaced by a new bridge

Taylor Bridge (Cerro Gordo County, Iowa)
Built 1924, sidewalk added 1954; Replaced 1997
Lost Marsh arch bridge over Winnebago River on Business US 18
Replaced by a new bridge

Taylor Bridge (Old) (Cerro Gordo County, Iowa)
Built 1887; Replaced 1924
Lost Pratt through truss bridge ober Winnebago River on US18
Replaced by a new bridge

UP - 1st Street SW Overpass (Cerro Gordo County, Iowa)
Pony/through plate girder bridge over 1st Street Southwest on Union Pacific Railroad
Open to traffic

UP - Calmus Creek Bridge (Cerro Gordo County, Iowa)
Deck plate girder bridge over Calmus Creek on Railroad
Open to traffic

UP - US18 Overpass (Cerro Gordo County, Iowa)
Built 1958
Steel stringer bridge over 5th Street (IA-122) on Union Pacific Railroad
Open to traffic

Willow Creek Bridge (Cerro Gordo County, Iowa)
Built 1880, Lost 1918
Lost Pratt through truss bridge over Willow Creek on Road
Replaced by a new bridge

Willowbrook Drive Bridge (Cerro Gordo County, Iowa)
Built 1989
Concrete rigid frame bridge over Cheslea Creek on Willowbrook Drive
Open to traffic

Winnebago River Trail - Calmus Creek Footbridge (Cerro Gordo County, Iowa)
Built 2005
Steel stringer bridge over Calmus Creek on Winnebago River Trail
Open to pedestrians only