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)

K14 BUCHANAN AVE

Good

Over: BLOOD RUN CREEK

100481302, Lyon, IA

Built 2019 Load: 32.7 t ADT: 50

FM

Good

Over: SMALL STREAM

099451301, Lyon, IA

Built 1990 Load: 32.7 t ADT: 30

LOCAL

Good

Over: SMALL STREAM

100463201, Lyon, IA

Built 1990 Load: 32.7 t ADT: 81

LOCAL

Good

Over: SMALL STREAM

099441701, Lyon, IA

Built 1991 Load: 32.7 t ADT: 26

LOCAL

Good

Over: SMALL STREAM

099453101, Lyon, IA

Built 1991 Load: 32.7 t ADT: 26

LOCAL ROAD

Good

Over: TRIB TO MUD CREEK

099460202, Lyon, IA

Built 2004 Load: 32.7 t ADT: 112

LOCAL ROAD

Good

Over: TRIB TO MUD CREEK

099461001, Lyon, IA

Built 2004 Load: 32.7 t ADT: 46

LOCAL ROAD

Good

Over: TRIB TO MUD CREEK

100460904, Lyon, IA

Built 2004 Load: 32.7 t ADT: 26

LOCAL ROAD

Good

Over: SMALL

100483302, Lyon, IA

Built 2004 Load: 32.7 t ADT: 62

140TH ST

Good

Over: DRY RUN CREEK

100443501, Lyon, IA

Built 2005 Load: 32.7 t ADT: 20

KENNEDY AVE

Good

Over: DRY RUN CREEK

100443602, Lyon, IA

Built 2005 Load: 32.7 t ADT: 35

BUCHANAN AVE

Good

Over: MCLAREN CREEK

098481202, Lyon, IA

Built 1992 Load: 32.7 t ADT: 35

FM

Good

Over: KANARANZI CREEK

100452201, Lyon, IA

Built 1980 Load: 33.7 t ADT: 100

LOCAL ROAD

Good

Over: TOM CREEK

1002431902, Lyon, IA

Built 2011 Load: 34.4 t ADT: 26

LOCAL ROAD

Good

Over: JOHNSON CREEK

098440701, Lyon, IA

Built 2005 Load: 35.7 t ADT: 30

FM

Good

Over: SMALL STREAM

100431702, Lyon, IA

Built 1977 Load: 36.2 t ADT: 45

CHERRY AVE

Good

Over: PLUM CREEK

98470602, Lyon, IA

Built 2018 Load: 36.3 t ADT: 90

210TH ST

Good

Over: PLUM CREEK

098480101, Lyon, IA

Built 2018 Load: 36.3 t ADT: 11

210TH ST

Good

Over: PLUM CREEK

098480101, Lyon, IA

Built 2018 Load: 36.3 t ADT: 11

LOCAL ROAD

Good

Over: LITTLE ROCK RIVER

099433003, Lyon, IA

Built 1999 Load: 37.6 t ADT: 26

BIRCH AVE

Good

Over: KLONDIKE CREEK

099481402, Lyon, IA

Built 2021 Load: 37.9 t ADT: 103

BUCHANAN AVE

Good

Over: KLONDIKE CREEK

099481202, Lyon, IA

Built 2019 Load: 38.9 t ADT: 26

W DAKTOA AVE

Good

Over: RIO GRANDE CREEK

098440201, Lyon, IA

Built 2011 Load: 38.9 t ADT: 1,349

LOG AVE

Good

Over: WEST RAT CREEK

098431402, Lyon, IA

Built 2020 Load: 39.9 t ADT: 34

240TH ST

Good

Over: RAT CREEK

098432401, Lyon, IA

Built 2020 Load: 39.9 t ADT: 81

220TH ST

Good

Over: EMERY CREEK

098451101, Lyon, IA

Built 2017 Load: 39.9 t ADT: 46

IBEX AVE

Good

Over: EMERY CREEK

098451202, Lyon, IA

Built 2017 Load: 39.9 t ADT: 46

260TH ST

Good

Over: ALBERTSON CREEK

098473501, Lyon, IA

Built 2017 Load: 39.9 t ADT: 50

A42 240TH ST

Good

Over: ALBERTSON CREEK

098472201, Lyon, IA

Built 2019 Load: 40.2 t ADT: 1,176

K30 DOVE AVE

Good

Over: SYKES CREEK

099470104, Lyon, IA

Built 2019 Load: 40.2 t ADT: 450

JAY AVE

Good

Over: TOM CREEK

100442702, Lyon, IA

Built 2015 Load: 40.2 t ADT: 30

ASHLEY AVE

Good

Over: BLOOD RUN CREEK

100482102, Lyon, IA

Built 2018 Load: 40.2 t ADT: 21

LARCH AVE

Good

Over: OVERFLOW OTTER CREEK

098433302, Lyon, IA

Built 2022 Load: 41.1 t ADT: 30

LOCAL ROAD

Good

Over: LITTLE ROCK RIVER

098441501, Lyon, IA

Built 1997 Load: 41.5 t ADT: 81

A42 240TH ST

Good

Over: MUD CREEK

098462201, Lyon, IA

Built 2003 Load: 41.6 t ADT: 698

FM

Good

Over: BNSF RR

098462201, Lyon, IA

Built 2003 Load: 44.7 t ADT: 698

FM

Good

Over: JOHNSON CREEK

098440501, Lyon, IA

Built 2006 Load: 45.4 t ADT: 1,168

ASHLEY AVE

Good

Over: PETERSON CREEK

099480902, Lyon, IA

Built 2022 Load: 45.7 t ADT: 50

LOCAL ROAD

Good

Over: BLOOD RUN CREEK

100482301, Lyon, IA

Built 2000 Load: 48.0 t ADT: 21

FM

Good

Over: BLOOD RUN CREEK

100481201, Lyon, IA

Built 2000 Load: 50.0 t ADT: 439

LOCAL ROAD

Poor

Over: RAT CREEK

098432302, Lyon, IA

Built 1954 ADT: 26

LOCAL ROAD

Poor

Over: OTTER CREEK

098433302, Lyon, IA

Built 1900 ADT: 30

LOCAL ROAD

Poor

Over: OVER FLOW

098433302, Lyon, IA

Built 1900 ADT: 30

LOCAL ROAD

Poor

Over: OTTER CREEK

098443502, Lyon, IA

Built 1900 ADT: 30

LOCAL ROAD

Poor

Over: EMERY CREEK

098450102, Lyon, IA

Built 1900 ADT: 26

LOCAL ROAD

Poor

Over: SMALL STREAM

098460701, Lyon, IA

Built 1900 ADT: 41

LOCAL

Poor

Over: ROCK RIVER

098462303, Lyon, IA

Built 1900 ADT: 62

LOCAL ROAD

Poor

Over: HEFFERMAN CREEK

098472802, Lyon, IA

Built 1900 ADT: 11

220TH ST

Poor

Over: BIG SIOUX RIVER

098480804, Lyon, IA

Built 1925 ADT: 46

LOCAL ROAD

Poor

Over: LITTLE ROCK RIVER

099430901, Lyon, IA

Built 1900 ADT: 71

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.