Louisa County, IA

134 public highway bridges

Louisa County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Louisa County, Iowa contains 134 public highway bridges. Roughly 32.8% are rated “Good,” 47.8% “Fair,” and 17.2% “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.

134

Total Bridges

32.8%

Good

47.8%

Fair

17.2%

Poor Condition

Condition Distribution

Good

32.8% (44)

Fair

47.8% (64)

Poor

17.2% (23)

All Bridges (134)

Sort:

IA 92

Over: MAIN ST & COLLINS RD

0.3 mi W of Jct. IA 70, Louisa, IA

Built 1995 ADT: 2,780

US 61 SB

Over: IA 92

US 61 & IA 92 INTERCHANGE, Louisa, IA

Built 2017 ADT: 1,165

US 61 SB IA 92 WB

Over: 170TH ST

at Jct. of SR 170 St., Louisa, IA

Built 2017 ADT: 255

FM

Over: OTTER CREEK

073030403, Louisa, IA

Built 1959 Load: 17.5 t ADT: 50

FM

Over: SMALL STREAM

074051407, Louisa, IA

Built 1960 Load: 18.1 t ADT: 50

LOCAL

Over: IOWA SLOUGH

073013206, Louisa, IA

Built 1978 Load: 20.2 t ADT: 40

LEVEE

Over: LAKE ODESSA OUTLET

SEC 36 T74N R2W, Louisa, IA

Built 1996 Load: 21.8 t ADT: 1

FM

Over: SMALL STREAM

076052803, Louisa, IA

Built 1960 Load: 22.1 t ADT: 100

FM

Over: SHORT CREEK

075050502, Louisa, IA

Built 1970 Load: 22.7 t ADT: 30

LOCAL

Over: SMALL STREAM

076051906, Louisa, IA

Built 1973 Load: 22.7 t ADT: 26

LOCAL

Over: SMALL STREAM

075043005, Louisa, IA

Built 1982 Load: 22.7 t ADT: 123

LOCAL

Over: SM STREAM

076051902, Louisa, IA

Built 1970 Load: 24.5 t ADT: 40

FM

Over: SMALL STREAM

073022905, Louisa, IA

Built 1959 Load: 25.1 t ADT: 440

FM

Over: LONG CREEK

074041804, Louisa, IA

Built 1978 Load: 25.3 t ADT: 40

LOCAL

Over: SMALL STREAM

075030204, Louisa, IA

Built 1986 Load: 26.0 t ADT: 73

LOCAL

Over: SMALL STREAM

073030804, Louisa, IA

Built 1979 Load: 26.6 t ADT: 35

FM

Over: LONG CREEK

074041604, Louisa, IA

Built 1977 Load: 27.1 t ADT: 45

FM

Over: LONG CREEK

074051204, Louisa, IA

Built 1965 Load: 29.2 t ADT: 290

LOCAL

Over: SMALL STREAM

074041605, Louisa, IA

Built 1986 Load: 29.6 t ADT: 82

FM

Over: GOOSE CREEK

076052904, Louisa, IA

Built 1982 Load: 29.8 t ADT: 25

LOCAL

Over: OTTER CREEK

073040101, Louisa, IA

Built 1972 Load: 30.0 t ADT: 35

FM

Over: TURKEY RUN

074030903, Louisa, IA

Built 1978 Load: 30.0 t ADT: 120

FM

Over: INDIAN CREEK

075033103, Louisa, IA

Built 1977 Load: 30.2 t ADT: 80

FM

Over: SMALL STREAM

073022906, Louisa, IA

Built 1966 Load: 30.4 t ADT: 110

LOCAL

Over: INDIAN CREEK

075042401, Louisa, IA

Built 1980 Load: 30.4 t ADT: 35

LOCAL

Over: MUSCATINE SLOUGH

075023104, Louisa, IA

Built 1968 Load: 30.6 t ADT: 650

LOCAL

Over: LONG CREEK

074041407, Louisa, IA

Built 1985 Load: 30.7 t ADT: 123

FM

Over: LONG CREEK

074042306, Louisa, IA

Built 1987 Load: 30.7 t ADT: 630

LOCAL

Over: SMALL STREAM

074051604, Louisa, IA

Built 1983 Load: 30.8 t ADT: 51

LOCAL

Over: MUSCATINE SLOUGH

075032405, Louisa, IA

Built 1981 Load: 30.8 t ADT: 41

LOCAL

Over: SMALL STREAM

075041501, Louisa, IA

Built 1966 Load: 30.8 t ADT: 82

LOCAL

Over: INDIAN CREEK

075042503, Louisa, IA

Built 1982 Load: 30.8 t ADT: 51

LOCAL

Over: SHORT CREEK

075050602, Louisa, IA

Built 1969 Load: 30.8 t ADT: 30

FM

Over: MUSCATINE SLOUGH

075031203, Louisa, IA

Built 1972 Load: 31.0 t ADT: 660

LOCAL

Over: SMALL STREAM

075033204, Louisa, IA

Built 1982 Load: 31.8 t ADT: 41

IA 92

Over: MONKEY RUN CREEK

0.6 mi. W of IA 70, Louisa, IA

Built 1984 Load: 31.9 t ADT: 2,790

US 61

Over: MUSKRAT LAKE

4.6 mi. S of S Jct. IA 92, Louisa, IA

Built 1985 Load: 32.3 t ADT: 4,950

X 99

Over: IOWA RIVER

073022602, Louisa, IA

Built 2014 Load: 32.4 t ADT: 570

LOCAL

Over: SMALL STREAM

073013301, Louisa, IA

Built 1998 Load: 32.7 t ADT: 15

LOCAL

Over: MICHAEL CREEK

074030112, Louisa, IA

Built 1983 Load: 32.7 t ADT: 650

LOCAL

Over: JOHNNY CREEK

074040701, Louisa, IA

Built 1989 Load: 32.7 t ADT: 82

LOCAL

Over: SMALL STREAM

074050302, Louisa, IA

Built 1983 Load: 32.7 t ADT: 82

LOCAL

Over: SMALL STREAM

074050402, Louisa, IA

Built 1991 Load: 32.7 t ADT: 30

LOCAL

Over: SMALL STREAM

075032004, Louisa, IA

Built 1994 Load: 32.7 t ADT: 21

FM

Over: SMALL STREAM

076050606, Louisa, IA

Built 1980 Load: 32.7 t ADT: 20

FM

Over: SMALL

076050803, Louisa, IA

Built 1979 Load: 32.7 t ADT: 20

60TH ST

Over: SMALL STREAM

73040701, Louisa, IA

Built 2013 Load: 32.7 t ADT: 21

LOCAL

Over: SMALL STREAM

075032903, Louisa, IA

Built 1978 Load: 33.0 t ADT: 50

CO RD H22

Over: SMALL STREAM

073022801, Louisa, IA

Built 1959 Load: 33.6 t ADT: 440

US 61

Over: MILLRACE CREEK

5.9 mi S of S Jct IA 92, Louisa, IA

Built 1985 Load: 33.7 t ADT: 4,950

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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Compiled by PlainBridges, Independent data publisher

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.