Palo Alto County, IA

114 public highway bridges

Palo Alto County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Palo Alto County, Iowa contains 114 public highway bridges. Roughly 23.7% are rated “Good,” 57% “Fair,” and 19.3% “Poor.” Poor means the lowest applicable deck, superstructure, substructure, or culvert rating is 4 or below on the 0–9 NBI scale. It is a condition category, not a live safety or closure decision.

Responsible agencies inspect covered bridges on risk-based intervals under current NBIS rules and submit inventory data to FHWA annually. The list below shows every NBI-tracked bridge in the county. Use the “Sort by” controls to change the ordering, and click any row for its reported inspection date, traffic count, and condition fields.

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

114
Total Bridges
23.7%
Good
57%
Fair
19.3%
Poor Condition

Condition Distribution

Good
23.7% (27)
Fair
57% (65)
Poor
19.3% (22)

All Bridges (114)

LOCAL-CLOSED!

Fair

Over: DD 81

095322104, Palo Alto, IA

Built 1882 Load: 4.9 t ADT: 46

LOCAL

Fair

Over: STREAM

096322101, Palo Alto, IA

Built 1914 Load: 8.8 t ADT: 30

LOCAL

Fair

Over: STREAM

097312901, Palo Alto, IA

Built 1928 Load: 13.9 t ADT: 36

LOCAL

Fair

Over: CYLINDER CREEK

097312702, Palo Alto, IA

Built 1972 Load: 14.6 t ADT: 15

FM

Fair

Over: DD 48

094322502, Palo Alto, IA

Built 1965 Load: 17.1 t ADT: 40

LOCAL

Fair

Over: DD 175

095331801, Palo Alto, IA

Built 1921 Load: 17.6 t ADT: 5

LOCAL

Fair

Over: STREAM

095340201, Palo Alto, IA

Built 2004 Load: 19.4 t ADT: 30

LOCAL

Fair

Over: DD 175

095330801, Palo Alto, IA

Built 1956 Load: 22.0 t ADT: 11

LOCAL

Fair

Over: OLD CHANNEL DES MOINES R

094312801, Palo Alto, IA

Built 1931 Load: 22.2 t ADT: 72

LOCAL

Fair

Over: JACK CREEK

097332205, Palo Alto, IA

Built 1973 Load: 22.4 t ADT: 73

LOCAL

Fair

Over: CYLINDER CREEK

095311003, Palo Alto, IA

Built 1962 Load: 22.7 t ADT: 72

IA 4

Fair

Over: DRAINAGE DITCH #41

5.5 mi S of jct US 18, Palo Alto, IA

Built 2000 Load: 22.9 t ADT: 2,040

LOCAL

Fair

Over: OUTLET OF RUSH LAKE

094342104, Palo Alto, IA

Built 1998 Load: 23.2 t ADT: 30

CO PARK RD

Fair

Over: STREAM

095342803, Palo Alto, IA

Built 1916 Load: 23.3 t ADT: 35

FM

Fair

Over: DD

096323602, Palo Alto, IA

Built 1978 Load: 23.3 t ADT: 40

LOCAL

Fair

Over: STREAM

094343601, Palo Alto, IA

Built 1932 Load: 23.7 t ADT: 21

FM

Fair

Over: DD #81

095322504, Palo Alto, IA

Built 1982 Load: 24.3 t ADT: 41

FM

Fair

Over: PRAIRIE CREEK

095311401, Palo Alto, IA

Built 1965 Load: 25.7 t ADT: 60

FM

Fair

Over: BR SILVER CREEK

095342401, Palo Alto, IA

Built 1963 Load: 25.7 t ADT: 538

LOCAL

Fair

Over: DD 61

094310101, Palo Alto, IA

Built 1978 Load: 26.6 t ADT: 82

FM

Fair

Over: DD #41

095332301, Palo Alto, IA

Built 1991 Load: 26.6 t ADT: 518

FM

Fair

Over: CYLINDER CREEK

096310801, Palo Alto, IA

Built 1966 Load: 26.6 t ADT: 193

FM

Fair

Over: CYLINDER CREEK

095322401, Palo Alto, IA

Built 1979 Load: 30.4 t ADT: 31

FM

Fair

Over: DD175

095330401, Palo Alto, IA

Built 1977 Load: 30.4 t ADT: 81

440TH AVE

Fair

Over: SIDE DITCH BRIDGE

2.0 mi. W of W jct. IA 4, Palo Alto, IA

Built 1965 Load: 30.6 t ADT: 10

FM

Fair

Over: CYLINDER CREEK

094310901, Palo Alto, IA

Built 1987 Load: 30.6 t ADT: 45

LOCAL

Fair

Over: DD 98

094323011, Palo Alto, IA

Built 1977 Load: 30.6 t ADT: 5

LOCAL

Fair

Over: DD NO 98

094321901, Palo Alto, IA

Built 1974 Load: 30.8 t ADT: 26

FM

Fair

Over: DD 63

094332702, Palo Alto, IA

Built 1972 Load: 30.8 t ADT: 60

LOCAL

Fair

Over: DD 63

094332802, Palo Alto, IA

Built 1977 Load: 30.8 t ADT: 11

FM

Fair

Over: CREEK

095311401, Palo Alto, IA

Built 1965 Load: 30.8 t ADT: 60

440TH AVE

Fair

Over: STREAM

096332302, Palo Alto, IA

Built 1972 Load: 30.8 t ADT: 82

FM

Fair

Over: DD

096332902, Palo Alto, IA

Built 1976 Load: 30.8 t ADT: 41

LOCAL

Fair

Over: STREAM

096333002, Palo Alto, IA

Built 1972 Load: 30.8 t ADT: 21

LOCAL

Fair

Over: CYLINDER CREEK

096310501, Palo Alto, IA

Built 1987 Load: 31.1 t ADT: 31

LOCAL

Fair

Over: DD#JT.63

094333501, Palo Alto, IA

Built 1985 Load: 31.2 t ADT: 62

LOCAL

Fair

Over: DD #61

095313501, Palo Alto, IA

Built 1980 Load: 31.2 t ADT: 41

LOCAL

Fair

Over: CYLINDER CREEK

097313201, Palo Alto, IA

Built 1974 Load: 31.4 t ADT: 35

LOCAL

Fair

Over: BEAVER CREEK DD #98

094323202, Palo Alto, IA

Built 1984 Load: 31.8 t ADT: 26

FM

Fair

Over: DD #175

095330802, Palo Alto, IA

Built 1984 Load: 31.8 t ADT: 30

LOCAL

Fair

Over: SILVER CREEK

095331802, Palo Alto, IA

Built 1981 Load: 31.8 t ADT: 30

FM

Fair

Over: DD JT 22

094341901, Palo Alto, IA

Built 1975 Load: 32.4 t ADT: 350

LOCAL

Fair

Over: STREAM

095311201, Palo Alto, IA

Built 1973 Load: 32.7 t ADT: 82

LOCAL

Fair

Over: DD #80

096323501, Palo Alto, IA

Built 1984 Load: 32.7 t ADT: 100

300TH ST

Fair

Over: CYLINDER CREEK

097312201, Palo Alto, IA

Built 2006 Load: 32.7 t ADT: 450

LOCAL

Fair

Over: DD #98

094331302, Palo Alto, IA

Built 1987 Load: 33.0 t ADT: 62

LOCAL

Fair

Over: DD#63

094331901, Palo Alto, IA

Built 1984 Load: 33.0 t ADT: 26

FM

Fair

Over: DD JT 22

094342001, Palo Alto, IA

Built 1975 Load: 33.0 t ADT: 350

LOCAL

Fair

Over: DRAINAGE DDJT22

094342004, Palo Alto, IA

Built 1975 Load: 33.0 t ADT: 30

FM

Fair

Over: DD 80

095310601, Palo Alto, IA

Built 1975 Load: 33.0 t ADT: 133

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

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Data sourced from official public datasets. See our methodology for details. Retrieved and formatted by PlainBridges

Every figure on PlainBridge is rendered directly from federal source data, no number is typed in by an editor. This page draws directly on federal source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.