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)

FM

Fair

Over: CYLINDER CREEK

095320103, Palo Alto, IA

Built 1975 Load: 33.0 t ADT: 131

LOCAL RD

Fair

Over: SMALL

095322302, Palo Alto, IA

Built 1979 Load: 33.0 t ADT: 21

LOCAL

Fair

Over: SILVER CREEK

095342308, Palo Alto, IA

Built 1978 Load: 33.0 t ADT: 50

FM

Fair

Over: DD

096321502, Palo Alto, IA

Built 1973 Load: 33.0 t ADT: 40

FM

Fair

Over: DD

096322202, Palo Alto, IA

Built 1977 Load: 33.0 t ADT: 45

FM

Fair

Over: DD #114

097332605, Palo Alto, IA

Built 1982 Load: 33.3 t ADT: 81

LOCAL

Fair

Over: DD 176

096333201, Palo Alto, IA

Built 2005 Load: 34.6 t ADT: 15

LOCAL

Fair

Over: JACK CREEK

097331104, Palo Alto, IA

Built 1986 Load: 34.9 t ADT: 73

LOCAL

Fair

Over: DD 80

096322602, Palo Alto, IA

Built 1992 Load: 36.3 t ADT: 21

LOCAL

Fair

Over: DD #22

094341902, Palo Alto, IA

Built 1982 Load: 36.7 t ADT: 11

LOCAL

Fair

Over: CYLINDER CREEK

096313101, Palo Alto, IA

Built 1991 Load: 37.1 t ADT: 81

LOCAL

Fair

Over: CYLINDER CREEK

097313302, Palo Alto, IA

Built 1999 Load: 39.0 t ADT: 21

530TH AVE

Fair

Over: CYLINDER CREEK

096310802, Palo Alto, IA

Built 1925 Load: 39.2 t ADT: 539

FM

Fair

Over: DD #114

096332601, Palo Alto, IA

Built 1973 Load: 44.4 t ADT: 275

FM

Fair

Over: WEST FORK DES MOINES R

097332705, Palo Alto, IA

Built 1983 Load: 48.3 t ADT: 71

FM

Good

Over: SILVER CREEK

095342306, Palo Alto, IA

Built 2002 Load: 27.3 t ADT: 769

LOCAL

Good

Over: DD 81

094312903, Palo Alto, IA

Built 1996 Load: 34.6 t ADT: 72

FM

Good

Over: DD 81

094311705, Palo Alto, IA

Built 1994 Load: 35.3 t ADT: 669

FM

Good

Over: DES MOINES RIVER

095312908, Palo Alto, IA

Built 1996 Load: 35.3 t ADT: 290

LOCAL

Good

Over: STREAM

094313302, Palo Alto, IA

Built 1989 Load: 37.1 t ADT: 11

LOCAL

Good

Over: CYLINDER CREEK

096311901, Palo Alto, IA

Built 1992 Load: 37.1 t ADT: 31

LOCAL

Good

Over: JACK CREEK

097320604, Palo Alto, IA

Built 1990 Load: 37.1 t ADT: 26

FM

Good

Over: OLD CHANNEL DES MOINES R

094311603, Palo Alto, IA

Built 1994 Load: 38.2 t ADT: 669

B63 (490TH ST)

Good

Over: DD 63

094332901, Palo Alto, IA

Built 2014 Load: 38.6 t ADT: 309

B55 430TH ST

Good

Over: DD #61

095312601, Palo Alto, IA

Built 2016 Load: 38.6 t ADT: 478

FM

Good

Over: DES MOINES RIVER

095312908, Palo Alto, IA

Built 1996 Load: 39.5 t ADT: 290

B63 490TH ST

Good

Over: DD84

094342601, Palo Alto, IA

Built 2021 Load: 40.2 t ADT: 309

FM

Good

Over: DES MOINES RIVER

094310803, Palo Alto, IA

Built 1988 Load: 41.1 t ADT: 46

500TH ST

Good

Over: STREAM

094313201, Palo Alto, IA

Built 2016 Load: 43.1 t ADT: 5

350TH ST

Good

Over: STREAM

096331501, Palo Alto, IA

Built 2016 Load: 43.1 t ADT: 26

LOCAL

Good

Over: PRAIRIE CREEK

094312403, Palo Alto, IA

Built 1990 Load: 45.4 t ADT: 73

FM

Good

Over: DD 84

094342302, Palo Alto, IA

Built 2002 Load: 45.4 t ADT: 1,008

FM

Good

Over: PRAIRIE CREEK

094311303, Palo Alto, IA

Built 2005 Load: 45.7 t ADT: 681

FM

Good

Over: DD #48

094322601, Palo Alto, IA

Built 2005 Load: 45.7 t ADT: 669

FM

Good

Over: DD 98

094323005, Palo Alto, IA

Built 2005 Load: 45.7 t ADT: 709

FM

Good

Over: DD 63

094330801, Palo Alto, IA

Built 1995 Load: 45.7 t ADT: 34

270 ST

Good

Over: DD 63

094331803, Palo Alto, IA

Built 2000 Load: 45.7 t ADT: 21

FM

Good

Over: DD 84

094342601, Palo Alto, IA

Built 2006 Load: 45.7 t ADT: 309

FM

Good

Over: DD 84

094342601, Palo Alto, IA

Built 2006 Load: 45.7 t ADT: 309

LOCAL

Good

Over: DD 61

095312301, Palo Alto, IA

Built 1997 Load: 45.7 t ADT: 15

LOCAL

Good

Over: STREAM

095322806, Palo Alto, IA

Built 1998 Load: 45.7 t ADT: 11

FM

Good

Over: SILVER CREEK

095342401, Palo Alto, IA

Built 2006 Load: 45.7 t ADT: 538

LOCAL

Poor

Over: DD

096330901, Palo Alto, IA

Built 1915 ADT: 41

LOCAL

Poor

Over: STREAM

096331002, Palo Alto, IA

Built 1915 Load: 7.8 t ADT: 5

FM

Poor

Over: OLD CHANNEL DES MOINES R

094310803, Palo Alto, IA

Built 1956 Load: 9.1 t ADT: 46

LOCAL

Poor

Over: STREAM

096331802, Palo Alto, IA

Built 1955 Load: 9.1 t ADT: 60

LOCAL

Poor

Over: DD 80

095321203, Palo Alto, IA

Built 1959 Load: 9.3 t ADT: 50

LOCAL

Poor

Over: DD6

095340901, Palo Alto, IA

Built 1917 Load: 11.2 t ADT: 11

LOCAL

Poor

Over: DD 63

094330601, Palo Alto, IA

Built 1958 Load: 14.7 t ADT: 15

LOCAL

Poor

Over: LIZARD CREEK

094342502, Palo Alto, IA

Built 1921 Load: 14.7 t ADT: 21

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

Related

Browse all → | Rankings →
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.