Status: Open to traffic
Location: 42.924472,-95.437608
Carries Field entrance over Dog Creek
Design: truss/pony/pratt
Design Details: Pratt pony truss
Total Length: 31.2 Feet
Span Length: 31.2 Feet
Overview: Pony truss bridge over Dog Creek on a field entrance
History: Built 1900
Built: 1900
Location: O'Brien County
View Bridge Information In Wayback Machine
Status: Open to traffic
Location: 43.025161,-95.663406
Carries Redwood Avenue over Dry Run
Design: truss/pony/pratt
Design Details: Pratt pony truss with riveted connections
Total Length: 79.1 Feet
Span Length: 79.1 Feet
Overview: Pony truss bridge over Dry Run on Redwood Avenue
History: Rehabilitated 1951
Built:
Location: O'Brien County
View Bridge Information In Wayback Machine
Status: Open to traffic
Location: 43.014852,-95.703219
Carries Polk Avenue over Dry Run
Design: truss/pony/warren
Design Details: Warren pony truss
Total Length: 55.1 Feet
Span Length: 55.1 Feet
Overview: Pony truss bridge over Dry Run on Polk Avenue
History: Built 1925
Built: 1925
Location: O'Brien County
View Bridge Information In Wayback Machine
Status: Open to traffic
Location: 43.025104,-95.663563
Carries Redwood Avenue over Dry Run Creek
Design: truss/pony/pratt
Design Details: Pratt pony truss
Total Length: 47.9 Feet
Span Length: 44.9 Feet
Overview: Pony truss bridge over Dry Run Creek on Redwood Avenue
History: Built 1924
Built: 1924
Location: O'Brien County
View Bridge Information In Wayback Machine
Status: Open to traffic
Location: 43.232259,-95.803251
Carries Nettle Avenue (Nettle Ave) over Floyd River
Design: truss/pony/warren
Design Details: Warren pony truss
Total Length: 127.0 Feet
Span Length: 65.0 Feet
Overview: Pony truss bridge over Floyd River on Nettle Avenue (Nettle Ave)
History: Rehabilitated 1954
Built:
Location: O'Brien County
View Bridge Information In Wayback Machine
Status: Open to traffic
Location: 43.239722,-95.763333
Carries Olive Avenue over Floyd River
Design: truss/pony
Design Details: Pony truss
Total Length: 128.0 Feet
Span Length: 48.9 Feet
Overview: Pony truss bridge over Floyd River on Olive Avenue
History: Built 1995
Built: 1995
Location: O'Brien County
View Bridge Information In Wayback Machine
Status: Open to traffic
Location: 42.997509,-95.615391
Carries 450th Street over Ginger Creek
Design: beam/stringer/steel
Design Details: Steel stringer
Total Length: 40.0 Feet
Span Length: 40.0 Feet
Overview: Pony truss bridge over Ginger Creek on 450th Street
History: Rehabilitated 1955
Built:
Location: O'Brien County
View Bridge Information In Wayback Machine
Status: Replaced by a new bridge
Location: 43.143101,-95.821902
Carries Nest Avenue (Nest Ave) over Little Floyd River
Design: truss/pony
Design Details: Pony truss
Total Length: 60.0 Feet
Span Length: 60.0 Feet
Overview: Pony truss bridge over Little Floyd River on Nest Avenue (Nest Ave)
History: Built 1918, Replaced 2012
Built: 1918
Location: O'Brien County
View Bridge Information In Wayback Machine
Status: Open to traffic
Location: 43.084360,-95.462057
Carries 390th Street over Little Waterman Creek
Design: beam/stringer/steel
Design Details: Steel stringer
Total Length: 40.0 Feet
Span Length: 40.0 Feet
Overview: Pony truss bridge over Little Waterman Creek on 390th Street
History: Built 1937
Built: 1937
Location: O'Brien County
View Bridge Information In Wayback Machine
Status: Open to traffic; Doomed
https://www.nwestiowa.com/news/new-bridge-planned-by-primghar/article_ebd74726-41b2-11e8-8851-6fbf5da3a10f.html
Location: 43.087588,-95.467122
Carries Warbler Avenue over Little Waterman Creek
Design: truss/pony/pratt
Design Details: Pratt pony truss
Total Length: 90.9 Feet
Span Length: 44.9 Feet
Overview: Pony truss bridge over Little Waterman Creek on Warbler Avenue
History: Rehabilitated 1949
Built:
Location: O'Brien County
View Bridge Information In Wayback Machine
486113
Little Waterman Creek Bridge
Photo taken by Mark Mahoney
Status: Open to traffic
Location: 42.997222,-95.680000
Carries 450th Street over Mill Creek
Design: truss/pony
Design Details: Pony truss
Total Length: 81.0 Feet
Span Length: 81.0 Feet
Overview: Pony truss bridge over Mill Creek on 450th Street
History: Built 1924
Built: 1924
Location: O'Brien County
View Bridge Information In Wayback Machine
Status: Open to traffic
Location: 42.955278,-95.702988
Carries Polk Avenue over Mill Creek
Design: truss/through/pratt
Design Details: Pratt through truss with riveted connections
Total Length: 100.1 Feet
Span Length: 100.1 Feet
Overview: Through truss bridge over Mill Creek on Polk Avenue
History: Built 1924
Built: 1924
Location: O'Brien County
View Bridge Information In Wayback Machine
Status: Open to traffic
Location: 43.043421,-95.703369
Carries Polk Avenue over Mill Creek
Design: truss/pony/pratt
Design Details: Pratt pony truss
Total Length: 86.0 Feet
Span Length: 44.9 Feet
Overview: Pony truss bridge over Mill Creek on Polk Avenue
History: Built 1918; rehabilitated 1938
Built: 1918
Location: O'Brien County
View Bridge Information In Wayback Machine
Status: Open to traffic
Location: 43.004180,-95.703134
Carries Polk Avenue over Mill Creek
Design: truss/pony/warren
Design Details: Warren pony truss
Total Length: 60.0 Feet
Span Length: 60.0 Feet
Overview: Pony truss bridge over Mill Creek on Polk Avenue
History: Built 1924
Built: 1924
Location: O'Brien County
View Bridge Information In Wayback Machine
Status: Open to traffic
Location: 42.958684,-95.466704
Carries Warbler Avenue over Murray Creek
Design: truss/pony/pratt
Design Details: Pratt pony truss
Total Length: 60.0 Feet
Span Length: 60.0 Feet
Overview: Pony truss bridge over Murray Creek on Warbler Avenue
History: Built 1900
Built: 1900
Location: O'Brien County
View Bridge Information In Wayback Machine
Status: Replaced by a new culvert
Location: 43.157783,-95.683635
Carries Redwing Avenue (L48) over South Branch Little Floyd River
Design: truss/pony
Design Details: Pony truss
Total Length: 39.0 Feet
Span Length: 39.0 Feet
Overview: Pony truss bridge over South Branch Little Floyd River on Redwing Avenue
History: Rehabilitated 1949
Built:
Location: O'Brien County
View Bridge Information In Wayback Machine
Status: Replaced by a new bridge
Location: 43.171646,-95.778511
Carries CR B20 (330th Street) over Sweeney Creek
Design: truss/pony
Design Details: Pony truss
Total Length: 65.0 Feet
Span Length: 65.0 Feet
Overview: Pony truss bridge over Sweeney Creek on CR B20 (330th Street)
History: Rehabilitated 1952, Replaced 2013
Built:
Location: O'Brien County
View Bridge Information In Wayback Machine
Status: Replaced by a new bridge
Location: 42.966710,-95.427496
Carries Wilson Avenue over Unnamed creek
Design: truss/pony
Design Details: Pony truss
Total Length: 39.0 Feet
Span Length: 39.0 Feet
Overview: Pony truss bridge over an unnamed creek on Wilson Avenue
History: Built 1900
Built: 1900
Location: O'Brien County
View Bridge Information In Wayback Machine
Status: Open to traffic
Location: 43.015380,-95.467309
Carries Warbler Avenue over Unnamed Creek
Design: arch
Design Details: Arch
Total Length: 38.1 Feet
Span Length: 28.9 Feet
Overview: Arch bridge over an unnamed creek on Warbler Avenue
History: Built 1900
Built: 1900
Location: O'Brien County
View Bridge Information In Wayback Machine
Status: Open to traffic
Location: 42.985114,-95.432605
Carries CR B53 (460th Street) over Waterman Creek
Design: truss/pony
Design Details: Pony truss
Total Length: 75.1 Feet
Span Length: 75.1 Feet
Overview: Pony truss bridge over Waterman Creek on CR B53 (460th Street)
History: Built 1915
Built: 1915
Location: O'Brien County
View Bridge Information In Wayback Machine
Status: Open to traffic
Location: 43.039199,-95.425609
Carries 420th Street over Waterman Creek
Design: truss/pony/pratt
Design Details: Pratt pony truss
Total Length: 160.1 Feet
Span Length: 75.1 Feet
Overview: Pony truss bridge over Waterman Creek on 420th Street
History: Built ca. 1920; rehabilitated 1937
Built: ca. 1920
Location: O'Brien County
View Bridge Information In Wayback Machine
Status: Open to traffic
Location: 43.156944,-95.496111
Carries 340th Street over Waterman Creek
Design: truss/pony
Design Details: Pony truss
Total Length: 44.9 Feet
Span Length: 44.9 Feet
Overview: Pony truss bridge over Waterman Creek on 340th Street
History: Built 1923
Built: 1923
Location: O'Brien County
View Bridge Information In Wayback Machine
Status: Open to traffic
Location: 42.987222,-95.428889
Carries Wilson Avenue over Waterman Creek
Design: truss/pony
Design Details: Pony truss
Total Length: 69.9 Feet
Span Length: 69.9 Feet
Overview: Pony truss bridge over Waterman Creek on Wilson Avenue
History: Built 1900
Built: 1900
Location: O'Brien County
View Bridge Information In Wayback Machine
Status: Open to traffic
Location: 43.142411,-95.489635
Carries 350th Street over Watermann Creek
Design: truss/pony
Design Details: Pony truss
Total Length: 40.0 Feet
Span Length: 40.0 Feet
Overview: Pony truss bridge over Watermann Creek on 350th Street
History: Built 1918
Built: 1918
Location: O'Brien County
View Bridge Information In Wayback Machine
Status: Open to traffic
Location: 42.944288,-95.623593
Carries Silver Avenue over Willow Creek
Design: truss/pony
Design Details: Pony truss
Total Length: 44.9 Feet
Span Length: 44.9 Feet
Overview: Pony truss bridge over Willow Creek on Silver Avenue
History: Built 1925
Built: 1925
Location: O'Brien County
View Bridge Information In Wayback Machine
Status: Open to traffic
Location: 42.953611,-95.586111
Carries 480th Street over Willow Creek
Design: truss/pony
Design Details: Pony truss
Total Length: 49.9 Feet
Span Length: 49.9 Feet
Overview: Pony truss bridge over Willow Creek on 480th Street
History: Built 1914; rehabilitated 1954
Built: 1914
Location: O'Brien County
View Bridge Information In Wayback Machine
Status: Open to traffic
Location: 42.949149,-95.603779
Carries Sorrel Avenue over Willow Creek
Design: truss/pony
Design Details: Pony truss
Total Length: 44.9 Feet
Span Length: 44.9 Feet
Overview: Pony truss bridge over Willow Creek on Sorrel Avenue
History: Built 1926
Built: 1926
Location: O'Brien County
View Bridge Information In Wayback Machine
Status: Replaced by a new bridge
Location: 42.954168,-95.584031
Carries Starling Avenue over Willow Creek
Design: truss/pony
Design Details: Pony truss
Total Length: 40.0 Feet
Span Length: 40.0 Feet
Overview: Pony truss bridge over Willow Creek on Starling Avenue
History: Built 1916
Built: 1916
Location: O'Brien County
View Bridge Information In Wayback Machine
Status: Replaced by new bridge
Location: 42.997440,-95.663541
Carries Local road over Cole Creek
Design: arch/deck/closed
Design Details: Closed-spandrel arch
Total Length: 30.8 Feet
Span Length: 30.8 Feet
Overview: Lost concrete arch bridge over Cole Creek on a local road
History: Built 1929; replaced 1998
Built: 1929
Location: O'Brien County
View Bridge Information In Wayback Machine
Status: No longer exists; Stone abutments remain
Location: 42.982715,-95.720789
Carries Railroad (CNW) over Small Stream
Design: unknown
Design Details:
Total Length: 0.0 Feet
Span Length: 0.0 Feet
Overview: Lost Bridge over Small Stream on Railroad (CNW)
History:
Built:
Location: O'Brien County
View Bridge Information In Wayback Machine
Status: Removed
Location: 42.980649,-95.551459
Carries Chicago & North Western Railway over Illinois Central Railroad
Design: truss/through
Design Details: Through truss
Total Length: 0.0 Feet
Span Length: 0.0 Feet
Overview: Lost Through truss bridge over Illinois Central Railroad on Chicago & North Western Railway
History:
Built:
Location: O'Brien County
View Bridge Information In Wayback Machine
Status: Collapsed under the weight of a snowplow, remaining parts later burned (Based on the IA DNR naming the canoe access "Burned Bridge Access")
Location: 42.937449,-95.419832
Carries Yellow Avenue over Little Sioux River
Design: truss/through
Design Details: Through truss
Total Length: 0.0 Feet
Span Length: 0.0 Feet
Overview: Lost Through truss bridge over Little Sioux River on Yellow Avenue
History: Collapsed under the weight of a snowplow 1967
Built:
Location: O'Brien County
View Bridge Information In Wayback Machine
Status: Removed but not replaced; abutments and supports remain
Location: 42.976354,-95.671447
Carries Railroad over Mills Creek
Design: unknown
Design Details:
Total Length: 0.0 Feet
Span Length: 0.0 Feet
Overview: Lost Bridge over Mills Creek on Chicago & North Western Railroad
History:
Built:
Location: O'Brien County
View Bridge Information In Wayback Machine
Status: Open to pedestrians only
Location: 43.220404,-95.536914
Carries House over Plessis Creek
Design: beam/stringer/wood
Design Details: Timber stringer
Total Length: 70.0 Feet
Span Length: 0.0 Feet
Overview: Timber stringer bridge over Plessis Creek on House
History:
Built:
Location: O'Brien County
View Bridge Information In Wayback Machine
Status: Open to traffic
Location: 43.196386,-95.849143
Carries Union Pacific Railroad over Floyd River
Design: beam/stringer/steel
Design Details: Steel stringer
Total Length: 171.0 Feet
Span Length: 40.0 Feet
Overview: Steel stringer bridge over Floyd River on Union Pacific Railroad
History: Built 1922
Built: 1922
Location: O'Brien County
View Bridge Information In Wayback Machine
461870
UP Floyd River Bridge
Overview
Photo taken by John Marvig in November 2019
461871
UP Floyd River Bridge
North Span
Photo taken by John Marvig in November 2019
461872
UP Floyd River Bridge
Middle Span
Photo taken by John Marvig in November 2019
461873
UP Floyd River Bridge
South Span
Photo taken by John Marvig in November 2019
461874
UP Floyd River Bridge
Overview
Photo taken by John Marvig in November 2019
461875
UP Floyd River Bridge
Overview
Photo taken by John Marvig in November 2019
461876
UP Floyd River Bridge
Plaque
Photo taken by John Marvig in November 2019
461877
UP Floyd River Bridge
South Pier
Photo taken by John Marvig in November 2019
461878
UP Floyd River Bridge
Middle Pier
Photo taken by John Marvig in November 2019
461879
UP Floyd River Bridge
North Pier (Former North Abutment)
Photo taken by John Marvig in November 2019
461880
UP Floyd River Bridge
North Abutment
Photo taken by John Marvig in November 2019
461881
UP Floyd River Bridge
North Approach
Photo taken by John Marvig in November 2019
461882
UP Floyd River Bridge
South Abutment
Photo taken by John Marvig in November 2019
461883
UP Floyd River Bridge
Overview
Photo taken by John Marvig in November 2019
Special Bridge Conditions Legend: R - Former location of relocated bridge. ! - At risk for demolition or destruction. X - Confirmed demolished or collapsed. S - Dismantled and/or in storage. L - Severe loss of historic integrity due to alteration.
