Lyon County, IA

241 public highway bridges

Lyon County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Lyon County, Iowa contains 241 public highway bridges. Roughly 41.1% are rated “Good,” 37.8% “Fair,” and 21.2% “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.

241

Total Bridges

41.1%

Good

37.8%

Fair

21.2%

Poor Condition

Condition Distribution

Good

41.1% (99)

Fair

37.8% (91)

Poor

21.2% (51)

All Bridges (241)

Sort:

FM

Over: ARGO SLOUGH

099431002, Lyon, IA

Built 1980 Load: 29.3 t ADT: 45

LOCAL ROAD

Over: SPRING CREEK

099461701, Lyon, IA

Built 1981 Load: 29.3 t ADT: 30

US 18

Over: DRY RUN CREEK

0.7 mi. W of SR A50, Lyon, IA

Built 1975 Load: 29.6 t ADT: 2,240

IBEX AVE

Over: LITTLE ROCK RIVER

098451202, Lyon, IA

Built 1978 Load: 29.8 t ADT: 46

LOCAL ROAD

Over: GILBERTSON CREEK

099471902, Lyon, IA

Built 1975 Load: 30.0 t ADT: 81

FM

Over: OVERFLOW

098433402, Lyon, IA

Built 1968 Load: 30.6 t ADT: 199

LOCAL ROAD

Over: TOM CREEK

100442402, Lyon, IA

Built 1969 Load: 30.6 t ADT: 15

FM

Over: ROCK RIVER

100452003, Lyon, IA

Built 1980 Load: 30.7 t ADT: 180

LOCAL ROAD

Over: TOM CREEK

100453602, Lyon, IA

Built 1974 Load: 30.7 t ADT: 15

FM

Over: SPRING CREEK

099461002, Lyon, IA

Built 1971 Load: 31.0 t ADT: 71

FM

Over: EMERY CREEK

099441502, Lyon, IA

Built 1970 Load: 31.6 t ADT: 45

IA 9

Over: MUD CREEK

0.2 mi. W of Jct. SR K30, Lyon, IA

Built 1975 Load: 31.7 t ADT: 3,270

FM

Over: SMALL STREAM

100431901, Lyon, IA

Built 1978 Load: 31.7 t ADT: 60

FM

Over: TOM CREEK

100432201, Lyon, IA

Built 1977 Load: 31.7 t ADT: 60

K60(INDIAN AVE)

Over: LITTLE ROCK RIVER

098440702, Lyon, IA

Built 1960 Load: 32.4 t ADT: 230

LOCAL ROAD

Over: CREEK

100431601, Lyon, IA

Built 2003 Load: 32.4 t ADT: 21

LOCAL

Over: STREAM

098443302, Lyon, IA

Built 1981 Load: 32.7 t ADT: 41

FM

Over: SMALL STREAM

098452101, Lyon, IA

Built 1978 Load: 32.7 t ADT: 50

FM

Over: LIZARD CREEK

098463302, Lyon, IA

Built 1975 Load: 32.7 t ADT: 1,416

LOCAL

Over: PLUM CREEK

098481003, Lyon, IA

Built 1979 Load: 32.7 t ADT: 41

LOCAL

Over: PLUM CREEK

098481101, Lyon, IA

Built 1979 Load: 32.7 t ADT: 62

FM

Over: SMALL STREAM

099431901, Lyon, IA

Built 1975 Load: 32.7 t ADT: 190

FM

Over: SMALL STREAM

099461902, Lyon, IA

Built 2005 Load: 32.7 t ADT: 240

LOCAL ROAD

Over: PETERSON CREEK

099481701, Lyon, IA

Built 1991 Load: 32.7 t ADT: 15

LOCAL RD

Over: MUD CREEK

100472403, Lyon, IA

Built 1979 Load: 33.1 t ADT: 50

FM

Over: BLOOD RUN CREEK

100482204, Lyon, IA

Built 1971 Load: 33.1 t ADT: 350

FM

Over: TOM CREEK

100432002, Lyon, IA

Built 1972 Load: 33.4 t ADT: 90

FM

Over: TOOLE CREEK

100461901, Lyon, IA

Built 1979 Load: 33.4 t ADT: 45

170TH ST

Over: ARGO SLOUGH

99431601, Lyon, IA

Built 2017 Load: 33.6 t ADT: 11

JEFFERSON ST

Over: MCLAREN CREEK

098471800, Lyon, IA

Built 1968 Load: 33.8 t ADT: 201

FM

Over: TURNER CREEK

100442201, Lyon, IA

Built 1980 Load: 34.9 t ADT: 71

IA 9

Over: ROCK RIVER

0.5 mi. E of E Jct. US 75, Lyon, IA

Built 1974 Load: 36.6 t ADT: 3,920

FM

Over: TAFT CREEK

099433302, Lyon, IA

Built 1967 Load: 37.7 t ADT: 100

FM

Over: HESS CREEK

099433302, Lyon, IA

Built 1967 Load: 38.3 t ADT: 100

FM

Over: SMALL STREAM

098460902, Lyon, IA

Built 1946 Load: 38.4 t ADT: 509

FM

Over: LITTLE ROCK RIVER

099432001, Lyon, IA

Built 1973 Load: 38.5 t ADT: 190

IA 182

Over: STREAM

0.2 mi N of Jct. SR A34, Lyon, IA

Built 1955 Load: 39.8 t ADT: 2,500

FM

Over: TAFT CREEK

099432402, Lyon, IA

Built 1955 Load: 41.7 t ADT: 439

IA 9

Over: STREAM

0.1 mi. E of S.R. K30, Lyon, IA

Built 1982 Load: 49.1 t ADT: 3,180

IA 9

Over: LITTLE ROCK RIVER

1.0 mi. W of SR L26, Lyon, IA

Built 1987 Load: 50.7 t ADT: 1,730

US 75

Over: LITTLE ROCK RIVER

0.4 mi. S of SR A44, Lyon, IA

Built 1975 Load: 51.9 t ADT: 2,610

IA 9

Over: STREAM

0.2 mi. W of IA 182, Lyon, IA

Built 1980 Load: 21.4 t ADT: 4,840

LOCAL ROAD

Over: ARGO SLOUGH

099431102, Lyon, IA

Built 1900 Load: 28.6 t ADT: 26

FM

Over: RAT CREEK

098433301, Lyon, IA

Built 2008 Load: 30.8 t ADT: 50

FM

Over: JOHNSON CREEK

099442702, Lyon, IA

Built 1980 Load: 31.7 t ADT: 40

A34 210TH AVE

Over: WILLOW CREEK

098450601, Lyon, IA

Built 2017 Load: 32.4 t ADT: 578

A34 210TH ST

Over: LITTLE ROCK RIVER

098430501, Lyon, IA

Built 2015 Load: 32.4 t ADT: 718

220TH ST

Over: WEST RAT CREEK

098431101, Lyon, IA

Built 2014 Load: 32.4 t ADT: 30

LOG AVENUE

Over: WEST RAT CREEK

098431102, Lyon, IA

Built 2020 Load: 32.4 t ADT: 41

LOCAL

Over: ALLEN CREEK

098432002, Lyon, IA

Built 1989 Load: 32.4 t ADT: 21

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

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