This through plate girder bridge carries a former Chicago, Rock Island & Pacific Railroad (Rock Island) mainline over 8th Street (former US Highway 6) in Altoona

Altoona, Polk County, Iowa

Owner: Iowa Interstate Railroad

Status: In Use

Built 1955

by

Unknown and Iowa Bridge Company of Des Moines, Iowa

for

Chicago, Rock Island & Pacific Railroad

Design:
2-64' through plate girders and 4-35' steel stringers

Description:
Through plate girder bridge over 8th Street

Significance:

This small stone arch culvert carries a former Chicago Great Western Railway mainline over an unnamed creek near Northeast 62nd Avenue east of Berwick

Berwick, Polk County, Iowa

Owner: Polk County Conservation Board

Status: Open to Pedestrian Traffic

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 and timber pile trestle bridge carries a former Des Moines & Central Iowa Railway line over Iowa Highway 415 (2nd Avenue) and an unnamed creek on the north side of Des Moines

Des Moines, Polk County, Iowa

Owner: Union Pacific Railroad

Status: In Use

Built 1942

by

Unknown

for

Des Moines & Central Iowa Railway

Design:
2-33' steel stringers and timber pile trestle

Description:
Steel stringer and timber pile trestle bridge over Iowa Highway 415 (2nd Avenue) and unnamed creek

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 unique through plate girder bridge carries a former Chicago, Milwaukee, St. Paul & Pacific Railroad (Milwaukee Road) branch line over Walnut Creek at Campbell Park in Clive

Clive, Polk County, Iowa

Owner: City of Clive

Status: Open to Pedestrian Traffic

Built 1917 using a span fabricated 1889

by

Lassig Bridge & Iron Works of Chicago, Illinois

for

Chicago, Milwaukee & St. Paul Railway

Design:
65' through plate girder and timber pile trestle

Description:
Through plate girder bridge over Walnut Creek

Significance:

This deck plate girder bridge carries a former Chicago, Rock Island & Pacific Railroad (Rock Island) mainline over Northeast 80th Street and Mud Creek east of Altoona

Altoona, Polk County, Iowa

Owner: Iowa Interstate Railroad

Status: In Use

Built 1901

by

American Bridge Company of New York (Lassig Plant)

for

Chicago, Rock Island & Pacific Railway

Design:
66' deck plate girder

Description:
Deck plate girder bridge over Northeast 80th Street and Mud 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 Pratt pony truss bridge carries a former Chicago, Milwaukee, St. Paul & Pacific Railroad (Milwaukee Road) branch line over Walnut Creek in Clive

Clive, Polk County, Iowa

Owner: Norfolk Southern Railway

Status: Abandoned

Built 1902 and 1943

by

Unknown and Thorgerson & Ericksen Company of Chicago, Illinois

for

Chicago, Milwaukee & St. Paul Railway

Design:
104' Pratt pony truss and timber pile trestle

Description:
Pratt pony truss bridge over Walnut Creek

Significance:

This deck plate girder bridge is the northern of two similar bridges carrying a former Chicago, Rock Island & Pacific Railroad (Rock Island) line over Fourmile Creek on the east side of Des Moines

Des Moines, Polk County, Iowa

Owner: Iowa Interstate Railroad

Status: In Use

Built 1902 and 1912

by

American Bridge Company of New York and Unknown

for

Chicago, Rock Island & Pacific Railway

Design:
5-44' deck plate girders

Description:
Deck plate girder 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: