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 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 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 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 through plate girder bridge carries a former Chicago, Rock Island & Pacific Railroad (Rock Island) mainline over the Des Moines River at Vine Street in Des Moines

Des Moines, Polk County, Iowa

Owner: Iowa Interstate Railroad

Status: In Use

Built 1904

by

American Bridge Company of New York; Bates & Rogers Construction Company of Chicago, Illinois and Unknown

for

Chicago, Rock Island & Pacific Railway

Design:
8-77' through plate girders

Description:
Through plate girder bridge over Des Moines River

Significance:

This small stone arch culvert carries a former Chicago Great Western Railway mainline over Frink Creek near Willow Creek Avenue on the south side of Des Moines

Des Moines, Polk County, Iowa

Owner: Polk County Conservation Board

Status: Open to Pedestrian Traffic

Built c. 1900

by

Unknown

for

Chicago Great Western Railway

Design:
7' stone arch culvert

Description:
Stone arch culvert over Frink 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:

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 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 large through truss and steel stringer bridge carries a modern realignment of a former Wabash Railroad branch line over the Des Moines River alongside Iowa Highway 316 south of Runnells

Runnells, Polk County, Iowa

Owner: Norfolk Southern Railway

Status: In Use

Built 1964

by

Unknown and L.G. Barcus Company of Kansas City, Missouri

for

Wabash Railroad and Chicago, Burlington & Quincy Railroad

Design:
3-188' Warren through trusses and 36-43' steel stringers

Description:
Warren through truss bridge over Des Moines River

Significance: