This through plate girder bridge carries a former Illinois Central Railroad line over County Road D36 (Former US Highway 20) on the east edge of Rockwell City

Rockwell City, Calhoun County, Iowa

Owner: Canadian National Railway

Status: In Use

Built 1934

by

McClintic-Marshall Corportation of Pittsburgh, Pennsylvania and Zitterell-Mills Company of Webster City, Iowa

for

Illinois Central Railroad

Design:
70' through plate girder and 4-14' concrete slabs

Description:
Through plate girder bridge over County Road D36 (Former US Highway 20)

Significance:

This large deck plate girder viaduct carries a former Chicago Great Western Railway mainline over McPherson Avenue and Little Mosquito Creek in Council Bluffs

Council Bluffs, Pottawattamie County, Iowa

Owner: Iowa Interstate Railroad

Status: In Use

Built 1924, 1937 and 2013

by

American Bridge Company of New York and Zitterell-Mills Company of Webster City, Iowa

for

Chicago Great Western Railway

Design:
1-61' and 1-60' deck plate girders, 1-27' and 1-17' steel stringers and concrete modular girder

Description:
Deck plate girder viaduct over McPherson Avenue and Little Mosquito Creek

Significance:

This steel stringer bridge carries a former Chicago & North Western Railway mainline over US Highway 65 on the east side of Colo

Colo, Story County, Iowa

Owner: Union Pacific Railroad

Status: In Use

Built 1934

by

McClintic-Marshall Corportation of Chicago, Illinois and Zitterell-Mills Company of Webster City, Iowa

for

Chicago & North Western Railway

Design:
1-34' and 2-30' steel stringers

Description:
Steel stringer bridge over US Highway 65

Significance: