Pottawattamie County, IA

469 public highway bridges

Pottawattamie County Bridge Snapshot

Pottawattamie County, Iowa contains 469 public highway bridges in the FHWA National Bridge Inventory. Roughly 32.4% are rated “Good,” 43.1% “Fair,” 10.2% “Poor,” and 10.2% are classified as structurally deficient — the federal designation for spans whose deck, superstructure, or substructure has been rated 4 or below on the 0–9 NBI scale. Structurally deficient does not mean unsafe to cross; it means the bridge is on the priority list for repair or replacement.

Inspections in IA are conducted by certified engineers from the state Department of Transportation on a 24-month cycle, and results are reported back to the FHWA each spring. The list below shows every NBI-tracked bridge in the county, sorted by inventory load rating. Use the “Sort by” controls to surface the lowest-rated spans first, and click any row for full inspection history, traffic counts, and condition trends.

Source: FHWA National Bridge Inventory. See methodology for full definitions.

469
Total Bridges
32.4%
Good
10.2%
Poor
10.2%
Structurally Deficient

Condition Distribution

Good
32.4% (152)
Fair
43.1% (202)
Poor
10.2% (48)
SD
10.2% (48)

All Bridges (469)

400TH ST

Good

Over: W NUSHNABOTNA

074400304, Pottawattamie, IA

Built 2006 Load: 45.2 t ADT: 40

US 6

Good

Over: MIDDLE SILVER CREEK

1.2 MI. E OF SR L-55, Pottawattamie, IA

Built 1989 Load: 46.1 t ADT: 2,770

46OTH STREET

Good

Over: DRAINAGE

000000000, Pottawattamie, IA

Built 2010 Load: 47.7 t ADT: 50

FM-JUNIPER ROAD

Good

Over: HENSCHAL CREEK

076432503, Pottawattamie, IA

Built 1996 Load: 48.0 t ADT: 50

US 6

Good

Over: WALNUT CREEK

0.1 mi. E of SR M-47, Pottawattamie, IA

Built 1985 Load: 48.8 t ADT: 1,070

BEECHNUT ROAD

Good

Over: MUD CREEK

074412401, Pottawattamie, IA

Built 2023 Load: 48.9 t ADT: 26

WESTGATE ROAD

Good

Over: HONEY CREEK

077430703, Pottawattamie, IA

Built 2022 Load: 48.9 t ADT: 15

IA 92

Good

Over: EAST NISHNABOTNA RIVER

1.4 MI. W OF JCT. IA 48, Pottawattamie, IA

Built 1999 Load: 49.4 t ADT: 1,180

LOCAL ROAD

Good

Over: PONY CREEK

074431202, Pottawattamie, IA

Built 1998 Load: 49.8 t ADT: 229

FM-470TH STREET

Good

Over: BEDELL CREEK

077390104, Pottawattamie, IA

Built 1990 Load: 49.8 t ADT: 71

I 29

Good

Over: DRAINAGE DITCH

2.4 miles south I-880, Pottawattamie, IA

Built 2022 Load: 50.2 t ADT: 20,600

US 6

Good

Over: GRAYBILL CREEK

2.6 MI. E OF E JCT US 59, Pottawattamie, IA

Built 1991 Load: 53.2 t ADT: 1,120

US 6

Good

Over: LITTLE SILVER CREEK

0.3 MI. W SR L-55, Pottawattamie, IA

Built 1989 Load: 53.6 t ADT: 3,410

FM-450TH STREET

Good

Over: GREYBILL CREEK

075390302, Pottawattamie, IA

Built 1974 Load: 54.5 t ADT: 60

FM-MAHOGANY RD

Good

Over: SIMON RUN

076431803, Pottawattamie, IA

Built 1976 Load: 54.5 t ADT: 199

FM-YORK ROAD

Good

Over: WALNUT CREEK

077380201, Pottawattamie, IA

Built 2005 Load: 57.2 t ADT: 26

FM-HEMLOCK AVE

Good

Over: STREAM

000000000, Pottawattamie, IA

Built 2010 Load: 60.0 t ADT: 34

FM-400TH STREET

Good

Over: SLOCUM CREEK

075401102, Pottawattamie, IA

Built 1979 Load: 60.4 t ADT: 79

FM-310TH STREET

Good

Over: LITTLE SILVER CREEK

075410502, Pottawattamie, IA

Built 1979 Load: 60.4 t ADT: 89

FM-MAHOGANY RD

Good

Over: SIMON RUN

076430705, Pottawattamie, IA

Built 1976 Load: 60.4 t ADT: 199

M16 380TH STREET

Good

Over: STREAM

076400402, Pottawattamie, IA

Built 2021 Load: 61.9 t ADT: 289

210TH STREET

Poor

Over: PIGEON CREEK

077432708, Pottawattamie, IA

Built 1952 Load: 13.2 t ADT: 40

FM

Poor

Over: MUD CREEK

074413602, Pottawattamie, IA

Built 1976 Load: 14.7 t ADT: 20

220TH STREET

Poor

Over: PIGEON CREEK

077432602, Pottawattamie, IA

Built 1925 Load: 14.7 t ADT: 5

LOCAL

Poor

Over: JORDAN CREEK

074390301, Pottawattamie, IA

Built 1948 Load: 15.1 t ADT: 34

FM-145TH STREET

Poor

Over: DRAINAGE

077440906, Pottawattamie, IA

Built 1959 Load: 15.3 t ADT: 40

LOCAL

Poor

Over: DRAINAGE

074381206, Pottawattamie, IA

Built 1952 Load: 15.7 t ADT: 29

LOCAL

Poor

Over: GRAYBILL CREEK

074390601, Pottawattamie, IA

Built 1950 Load: 16.0 t ADT: 29

MAGNOLIA ROAD

Poor

Over: STREAM

076432003, Pottawattamie, IA

Built 1982 Load: 16.0 t ADT: 11

EDISON LANE

Poor

Over: JORDAN CREEK

075392303, Pottawattamie, IA

Built 1976 Load: 16.2 t ADT: 5

MISSOURI AVENUE

Poor

Over: WALNUT CREEK

076381501, Pottawattamie, IA

Built 1953 Load: 17.6 t ADT: 26

TEAKWOOD ROAD

Poor

Over: NEOLA CREEK

077422401, Pottawattamie, IA

Built 1978 Load: 17.7 t ADT: 60

250TH STREET

Poor

Over: STREAM

074421704, Pottawattamie, IA

Built 1940 Load: 18.5 t ADT: 11

FM-310TH STREET

Poor

Over: IAIS RR

076412002, Pottawattamie, IA

Built 1952 Load: 19.3 t ADT: 110

SUMAC ROAD

Poor

Over: STREAM

077383101, Pottawattamie, IA

Built 1992 Load: 19.3 t ADT: 11

390TH STREET

Poor

Over: IAIS RR

076402202, Pottawattamie, IA

Built 1952 Load: 19.6 t ADT: 11

3RD AVE

Poor

Over: INDIAN CREEK

000000000, Pottawattamie, IA

Built 1935 Load: 20.7 t ADT: 179

310TH STREET

Poor

Over: STREAM

075413202, Pottawattamie, IA

Built 1994 Load: 21.0 t ADT: 60

LOMBARDY ROAD

Poor

Over: LITTLE SILVER CREEK

076412701, Pottawattamie, IA

Built 1989 Load: 21.1 t ADT: 20

515TH STREET

Poor

Over: STREAM

077382206, Pottawattamie, IA

Built 1991 Load: 21.7 t ADT: 5

LOCAL

Poor

Over: DRAINAGE

074380401, Pottawattamie, IA

Built 1995 Load: 21.8 t ADT: 11

510TH STREET

Poor

Over: STREAM

077380304, Pottawattamie, IA

Built 1992 Load: 22.3 t ADT: 5

470TH STREET

Poor

Over: JORDAN CREEK

075392402, Pottawattamie, IA

Built 1967 Load: 22.5 t ADT: 26

7TH AVE

Poor

Over: INDIAN CREEK

000000000, Pottawattamie, IA

Built 1930 Load: 23.5 t ADT: 235

TAMARACK ROAD

Poor

Over: OVER BNSF RR

077411905, Pottawattamie, IA

Built 1930 Load: 23.9 t ADT: 1,325

ROSEWOOD ROAD

Poor

Over: SECOND CREEK

076380601, Pottawattamie, IA

Built 1949 Load: 23.9 t ADT: 15

IA 92

Poor

Over: INDIAN CREEK

0.7 Mi. W of Jct. SR M-47, Pottawattamie, IA

Built 1938 Load: 24.1 t ADT: 1,180

FM-TRUMAN AVE

Poor

Over: WALNUT CREEK

077381403, Pottawattamie, IA

Built 1963 Load: 24.9 t ADT: 34

SUMAC RD

Poor

Over: STREAM

077423401, Pottawattamie, IA

Built 1949 Load: 25.2 t ADT: 45

MAGNOLIA ROAD

Poor

Over: STREAM

076392201, Pottawattamie, IA

Built 1961 Load: 28.0 t ADT: 5

Read our methodology — how this data is sourced, computed, and verified.

Related

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Data sourced from official U.S. government datasets. See our methodology for details. Retrieved and formatted by PlainBridges Editorial