Boone County, IA

119 public highway bridges

Boone County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Boone County, Iowa contains 119 public highway bridges. Roughly 25.2% are rated “Good,” 38.7% “Fair,” and 32.8% “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.

119
Total Bridges
25.2%
Good
38.7%
Fair
32.8%
Poor Condition

Condition Distribution

Good
25.2% (30)
Fair
38.7% (46)
Poor
32.8% (39)

All Bridges (119)

US 169

Good

Over: STREAM

4.7 MI. S OF S JCT. US 30, Boone, IA

Built 1935 Load: 18.1 t ADT: 3,370

IA 210

Good

Over: STREAM

IN MADRID, Boone, IA

Built 1989 Load: 20.0 t ADT: 2,880

190TH ST

Good

Over: TRIB OF BEAVER CREEK

084282201, Boone, IA

Built 2016 Load: 25.3 t ADT: 34

R AVE

Good

Over: PRAIRIE CREEK

085263602, Boone, IA

Built 2017 Load: 25.3 t ADT: 20

US 169

Good

Over: MIDDLE BEAVER CREEK

1.5 MI N OF W JCT US 30, Boone, IA

Built 1932 Load: 29.8 t ADT: 1,890

MONTONA RD

Good

Over: HONEY CREEK

083260714, Boone, IA

Built 2017 Load: 32.4 t ADT: 110

140TH ST

Good

Over: IOWAY CREEK

085252701, Boone, IA

Built 2016 Load: 32.4 t ADT: 30

U AVE

Good

Over: MONTGOMERY CREEK

085253302, Boone, IA

Built 2019 Load: 32.4 t ADT: 30

A AVE

Good

Over: STREAM

084280702, Boone, IA

Built 2019 Load: 32.7 t ADT: 5

LOCAL

Good

Over: IOWAY CREEK

085251603, Boone, IA

Built 2006 Load: 33.7 t ADT: 26

E26 170TH ST

Good

Over: BEAVER CREEK

084280901, Boone, IA

Built 2016 Load: 34.3 t ADT: 359

FM

Good

Over: BLUFF CREEK

085272902, Boone, IA

Built 1987 Load: 36.3 t ADT: 977

LOCAL

Good

Over: BEAVER CREEK

083282801, Boone, IA

Built 1999 Load: 39.0 t ADT: 15

335TH ST

Good

Over: LITTLE BEAVER CREEK

082273305, Boone, IA

Built 2011 Load: 40.2 t ADT: 40

W AVE

Good

Over: MONTGOMERY CREEK

085253502, Boone, IA

Built 2015 Load: 40.2 t ADT: 30

FM

Good

Over: BEAVER CREEK

083282101, Boone, IA

Built 2010 Load: 41.5 t ADT: 20

LOCAL

Good

Over: BEAVER CREEK

082282706, Boone, IA

Built 1996 Load: 42.3 t ADT: 60

LOWER LEDGES RD

Good

Over: PEASE CREEK

IN LEDGES STATE PARK, Boone, IA

Built 2011 Load: 42.3 t

LOCAL

Good

Over: BEAVER CREEK

082281505, Boone, IA

Built 1997 Load: 42.5 t ADT: 34

FM

Good

Over: IOWAY CREEK

084251201, Boone, IA

Built 2002 Load: 42.5 t ADT: 170

180TH ST

Good

Over: BEAVER CREEK

084281601, Boone, IA

Built 2020 Load: 42.8 t ADT: 71

240TH ST

Good

Over: MIDDLE BEAVER CREEK

083281601, Boone, IA

Built 2021 Load: 48.0 t ADT: 26

FM

Good

Over: ELKHORN CREEK

085273603, Boone, IA

Built 1997 Load: 48.0 t ADT: 71

LOCAL

Good

Over: BIG CREEK

082251603, Boone, IA

Built 2004 Load: 48.2 t ADT: 30

LOCAL

Good

Over: EVERSOLL CREEK

082262101, Boone, IA

Built 2009 Load: 48.2 t ADT: 30

LOCAL

Good

Over: LITTLE BEAVER CREEK

082272901, Boone, IA

Built 2004 Load: 48.2 t ADT: 45

FM

Good

Over: LITTLE BEAVER CREEK

082273201, Boone, IA

Built 2003 Load: 48.2 t ADT: 40

LOCAL

Good

Over: BEAVER CREEK

083280701, Boone, IA

Built 2007 Load: 52.9 t ADT: 15

LOCAL

Good

Over: BEAVER CREEK

083281801, Boone, IA

Built 2004 Load: 52.9 t ADT: 26

110TH ST

Good

Over: TRIB OF SQUAW CREEK

085251001, Boone, IA

Built 2018 Load: 55.7 t ADT: 30

FM

Poor

Over: DES MOINES RIVER

084272705, Boone, IA

Built 1909 ADT: 80

LOCAL

Poor

Over: TRIB DES MOINES RIVER

084273103, Boone, IA

Built 1900 ADT: 26

LOCAL

Poor

Over: TRIB DES MOINES RIVER

085271404, Boone, IA

Built 1900 ADT: 20

FM

Poor

Over: LITTLE BEAVER CREEK

082273302, Boone, IA

Built 1973 Load: 3.3 t ADT: 45

LOCAL

Poor

Over: BEAVER CREEK

082280304, Boone, IA

Built 1915 Load: 3.6 t ADT: 20

FIELD ENTRANCE

Poor

Over: TRIB DES MOINES RIVER

084272305, Boone, IA

Built 1900 Load: 3.8 t ADT: 40

LOCAL

Poor

Over: BLUFF CREEK

084270904, Boone, IA

Built 1900 Load: 5.7 t ADT: 20

190TH ST

Poor

Over: STREAM

084282102, Boone, IA

Built 1900 Load: 9.1 t ADT: 20

160TH ST

Poor

Over: BEAVER CREEK

084280401, Boone, IA

Built 1915 Load: 10.5 t ADT: 5

LOCAL

Poor

Over: BEAVER CREEK

083280901, Boone, IA

Built 1900 Load: 11.3 t ADT: 26

LOCAL

Poor

Over: BIG CREEK

082252701, Boone, IA

Built 1917 Load: 12.4 t ADT: 30

FM

Poor

Over: BLUFF CREEK

085273101, Boone, IA

Built 1915 Load: 12.6 t ADT: 50

LOCAL

Poor

Over: MONTGOMERY CREEK

085262501, Boone, IA

Built 1900 Load: 13.6 t ADT: 34

FM

Poor

Over: BR IOWAY CREEK

085250403, Boone, IA

Built 1916 Load: 13.9 t ADT: 20

LOCAL

Poor

Over: DES MOINES RIVER

082260305, Boone, IA

Built 1930 Load: 15.3 t ADT: 34

LOCAL

Poor

Over: LITTLE BEAVER CREEK

082273308, Boone, IA

Built 1939 Load: 16.1 t ADT: 26

LOCAL

Poor

Over: BIG CREEK

082252902, Boone, IA

Built 1900 Load: 16.3 t ADT: 90

LOCAL

Poor

Over: PRAIRIE CREEK

084250402, Boone, IA

Built 1915 Load: 16.3 t ADT: 30

LOCAL

Poor

Over: BEAVER CREEK

084282802, Boone, IA

Built 1900 Load: 17.3 t ADT: 11

LOCAL

Poor

Over: SQUAW CREEK

085252501, Boone, IA

Built 1900 Load: 17.8 t ADT: 15

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.