This steel stringer and timber pile trestle bridge carries a former Chicago Great Western Railway mainline over Fourmile Creek in Berwick

Berwick, Polk County, Iowa

Owner: Polk County Conservation Board

Status: Open to Pedestrian Traffic

Built c. 1960

by

Unknown

for

Chicago Great Western Railway

Design:
50' steel stringer and timber pile trestle

Description:
Steel stringer and timber pile trestle bridge over Fourmile Creek

Significance:

This steel stringer bridge carries a former Chicago & North Western Railway secondary line over an unnamed creek alongside Northwest 58th Street north of Polk City

Polk City, Polk County, Iowa

Owner: Polk County Conservation Board

Status: Open to Pedestrian Traffic

Built 1913

by

American Bridge Company of New York and Cleary-White Construction Company of Chicago, Illinois

for

Chicago & North Western Railway

Design:
24' steel stringer

Description:
Steel stringer bridge over unnamed creek

Significance:

This Warren through truss bridge once carried a Chicago, Rock Island & Pacific Railroad (Rock Island) mainline over Walnut Creek near Ashworth Park in Des Moines

Des Moines, Polk County, Iowa

Owner: Iowa Interstate Railroad

Status: Replaced by a new bridge; West span In Use

Built 1901 and 1908

by

Unknown

for

Chicago, Rock Island & Pacific Railway and Minneapolis & St. Louis Railway

Design:
113' Warren through truss and 44' deck plate girder

Description:
Warren through truss bridge over Walnut Creek

Significance:

This small concrete arch culvert carries a former Chicago, Rock Island & Pacific Railroad (Rock Island) secondary line over an unnamed creek west of Altoona

Altoona, Polk County, Iowa

Owner: Iowa Department of Transportation

Status: Abandoned

Built 1896

by

Unknown

for

Chicago, Rock Island & Pacific Railway

Design:
10' concrete arch culvert

Description:
Concrete arch culvert over unnamed creek

Significance:

This abandoned Pratt pony truss bridge carries a former Chicago, Milwaukee, St. Paul & Pacific Railroad (Milwaukee Road) branch line over Walnut Creek near Grand Avenue and 63rd Street in Des Moines

Des Moines, Polk County, Iowa

Owner: Norfolk Southern Railway

Status: Abandoned

Built 1917 using a span fabricated 1897

by

Wisconsin Bridge & Iron Company of North Milwaukee, Wisconsin

for

Chicago, Milwaukee & St. Paul Railway

Design:
106' Pratt pony truss and timber pile trestle

Description:
Pratt pony truss bridge over Walnut Creek

Significance:

This subdivided Warren through truss bridge carries a former Chicago, Rock Island & Pacific Railroad (Rock Island) mainline over the Des Moines River in Des Moines

Des Moines, Polk County, Iowa

Owner: Union Pacific Railroad

Status: In Use

Built 1920

by

American Bridge Company of New York and Unknown

for

Chicago, Rock Island & Pacific Railway

Design:
3-153' subdivided Warren through trusses

Description:
Subdivided Warren through truss bridge over Des Moines River

Significance:

This small stone arch culvert carries a former Chicago Great Western Railway mainline over an unnamed creek near Northeast 29th Street southwest of Berwick

Berwick, Polk County, Iowa

Owner: Polk County Conservation Board

Status: Abandoned

Built c. 1900

by

Unknown

for

Chicago Great Western Railway

Design:
4' stone arch culvert

Description:
Stone arch culvert over unnamed creek

Significance:

This steel stringer bridge carries a former Chicago & North Western Railway secondary line over a farm road east of Polk City

Polk City, Polk County, Iowa

Owner: Polk County Conservation Board

Status: Open to Pedestrian Traffic

Built 1914

by

Unknown and Cleary-White Construction Company of Chicago, Illinois

for

Chicago & North Western Railway

Design:
20' steel stringer

Description:
Steel stringer bridge over farm road

Significance:

This standard concrete box culvert carries a former Chicago & North Western Railway secondary line over an unnamed creek alongside Northwest 58th Street south of Sheldahl

Sheldahl, Polk County, Iowa

Owner: Polk County Conservation Board

Status: Open to Pedestrian Traffic

Built 1914

by

Cleary-White Construction Company of Chicago, Illinois

for

Chicago & North Western Railway

Design:
6'x5' concrete box culvert

Description:
Concrete box culvert over unnamed creek

Significance:

This deck plate girder bridge carries a former Chicago, Rock Island & Pacific Railroad (Rock Island) secondary line over an unnamed tributary of Camp Creek southwest of Mitchellville

Mitchellville, Polk County, Iowa

Owner: Iowa Interstate Railroad

Status: In Use

Built c. 1955 using spans fabricated 1903 and 1907

by

American Bridge Company of New York

for

Chicago, Rock Island & Pacific Railway

Design:
1-68' and 2-44' deck plate girders and timber pile trestle

Description:
Deck plate girder bridge over unnamed tributary of Camp Creek

Significance: