This concrete slab bridge carries a former Chicago, Milwaukee, St. Paul & Pacific Railroad (Milwaukee Road) mainline over 597th Avenue east of Cambridge

Cambridge, Story County, Iowa

Owner: Story County Conservation Board

Status: Open to Pedestrian Traffic

Built 1913 and 1946

by

Unknown

for

Chicago, Milwaukee & St. Paul Railway

Design:
20' concrete slab

Description:
Concrete slab bridge over 597th Avenue

Significance:

This stone arch bridge carries a former Chicago & North Western Railway mainline over Richards Creek on the east side of Ames

Ames, Story County, Iowa

Owner: Union Pacific Railroad

Status: In Use

Built 1900

by

Widell Company of Mankato, Minnesota

for

Chicago & North Western Railway

Design:
15' stone arch

Description:
Stone arch bridge over Richards Creek

Significance:

This large deck plate girder bridge carries a former Chicago & North Western Railway mainline over the South Skunk River on the east side of Ames

Ames, Story County, Iowa

Owner: Union Pacific Railroad

Status: In Use

Built 1900 and 1949

by

Wisconsin Bridge & Iron Company of North Milwaukee, Wisconsin; American Bridge Company of New York and Widell Company of Mankato, Minnesota

for

Chicago & North Western Railway

Design:
1-110', 1-75' deck plate girder and 1-20' and 1-18' steel stringers

Description:
Deck plate girder bridge over South Skunk River

Significance:

This steel stringer bridge carries a former Chicago & North Western Railway mainline over County Road S14 (3rd Street) on the west side of Nevada

Nevada, Story County, Iowa

Owner: Union Pacific Railroad

Status: In Use

Built 1936

by

Pittsburgh-Des Moines Steel Company of Des Moines, Iowa and John P. Abrahamson Construction Company of Des Moines, Iowa

for

Chicago & North Western Railway

Design:
28' steel stringer

Description:
Steel stringer bridge over County Road S14 (3rd Street)

Significance:

This stone arch culvert carries a former Chicago & North Western Railway line over an unnamed ditch on the west side of Nevada

Nevada, Story County, Iowa

Owner: Union Pacific Railroad

Status: In Use

Built 1891 and 1900

by

Unknown and Widell Company of Mankato, Minnesota

for

Chicago & North Western Railway

Design:
10' stone arch culvert

Description:
Stone arch culvert over unnamed ditch

Significance:

This steel stringer bridge carries a former Chicago, Rock Island & Pacific Railroad mainline over an unnamed creek east of Nevada

Nevada, Story County, Iowa

Owner: Union Pacific Railroad

Status: In Use

Built c. 1940

by

Unknown

for

Chicago, Rock Island & Pacific Railroad

Design:
35' steel stringer

Description:
Steel stringer bridge over unnamed creek

Significance:

This small stone arch culvert carried a former Chicago & North Western Railway mainline over an unnamed creek near US Highway 65 in Colo

Colo, Story County, Iowa

Owner: Union Pacific Railroad

Status: Filled In

Built 1890 and 1900

by

Morris & Foley of St. Paul, Minnesota and Widell Company of Mankato, Minnesota

for

Chicago & North Western Railway

Design:
10' stone arch culvert

Description:
Stone arch culvert over unnamed creek

Significance:

This steel stringer bridge carries a former Chicago & North Western Railway mainline over County Road R38 (500th Avenue/Y Avenue) on the west edge of Ames

Ames, Story County, Iowa to Jordan, Boone County, Iowa

Owner: Union Pacific Railroad

Status: In Use

Built 1941

by

Des Moines Steel Company of Des Moines, Iowa; Widell Company of Mankato, Minnesota and Unknown

for

Chicago & North Western Railway

Design:
45' steel stringer

Description:
Steel stringer bridge over County Road R38 (500th Avenue/Y Avenue)

Significance:

This concrete encased beam bridge carries a former Chicago & North Western Railway mainline over Haber Road on the north side of the Iowa State University campus in Ames

Ames, Story County, Iowa

Owner: Union Pacific Railroad

Status: In Use

Built 1938

by

Unknown and Widell Company of Mankato, Minnesota

for

Chicago & North Western Railway

Design:
18' concrete encased beam

Description:
Concrete encased beam bridge over Haber Road

Significance:

This deck plate girder bridge carries a former Chicago, Rock Island & Pacific Railroad (Rock Island) line over West Indian Creek near 6th Street in Nevada

Nevada, Story County, Iowa

Owner: Union Pacific Railroad

Status: In Use

Built 1906 and 1920

by

American Bridge Company of New York and Unknown

for

Chicago, Rock Island & Pacific Railway

Design:
1-75' and 2-50' deck plate girders

Description:
Deck plate girder bridge over West Indian Creek

Significance: