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)

LOCAL

Good

Over: SMALL STREAM

076053603, Louisa, IA

Built 1991 Load: 37.1 t ADT: 35

CO RD X 17

Good

Over: SHORT CREEK

075051008, Louisa, IA

Built 2011 Load: 40.2 t ADT: 540

FM

Good

Over: SMALL STREAM

073032101, Louisa, IA

Built 2002 Load: 41.0 t ADT: 480

TRI-COUNTY BR

Good

Over: IOWA RIVER

076050601, Louisa, IA

Built 1980 Load: 42.1 t ADT: 80

US 61

Good

Over: HONEY CREEK

0.1 mi. N of jct. SR H16, Louisa, IA

Built 1997 Load: 42.4 t ADT: 4,420

X AVE

Good

Over: GOOSE CREEK

076052805, Louisa, IA

Built 2021 Load: 44.7 t ADT: 62

FM

Good

Over: SMALL STREAM

074053401, Louisa, IA

Built 1950 Load: 46.3 t ADT: 690

LOCAL

Good

Over: SMALL STREAM

073042307, Louisa, IA

Built 1984 Load: 46.6 t ADT: 26

FM

Good

Over: OTTER CREEK

073040206, Louisa, IA

Built 1992 Load: 48.2 t ADT: 490

LOCAL

Good

Over: SHORT CREEK

075051305, Louisa, IA

Built 1995 Load: 50.0 t ADT: 104

FM

Good

Over: SMALL STREAM

073031502, Louisa, IA

Built 1990 Load: 52.9 t ADT: 80

LOCAL

Poor

Over: SMALL STREAM

073030702, Louisa, IA

Built 1920 ADT: 11

V AVE

Poor

Over: BUFFINGTON CREEK

074052302, Louisa, IA

Built 1893 ADT: 11

FM

Poor

Over: STREAM

075050802, Louisa, IA

Built 1963 ADT: 60

LOCAL

Poor

Over: OTTER CR

073040103, Louisa, IA

Built 1921 Load: 11.4 t ADT: 16

FM

Poor

Over: OTTER CREEK

073040302, Louisa, IA

Built 1955 Load: 12.0 t ADT: 35

LOCAL

Poor

Over: OTTER CREEK

073031102, Louisa, IA

Built 1920 Load: 12.2 t ADT: 30

LOCAL

Poor

Over: SMALL STREAM

075033104, Louisa, IA

Built 1930 Load: 13.0 t ADT: 11

LOCAL

Poor

Over: STREAM

073043102, Louisa, IA

Built 1915 Load: 14.5 t ADT: 21

LOCAL

Poor

Over: SMALL STREAM

073042105, Louisa, IA

Built 1930 Load: 14.7 t ADT: 11

LOCAL

Poor

Over: SMALL STREAM

073042102, Louisa, IA

Built 1960 Load: 15.1 t ADT: 35

LOCAL

Poor

Over: SHORT CREEK

075050902, Louisa, IA

Built 1964 Load: 15.1 t ADT: 26

FM

Poor

Over: OTTER CR

073030304, Louisa, IA

Built 1959 Load: 17.5 t ADT: 80

FM

Poor

Over: SMALL STREAM

074052801, Louisa, IA

Built 1960 Load: 18.7 t ADT: 660

LOCAL

Poor

Over: STREAM

073043102, Louisa, IA

Built 1920 Load: 20.8 t ADT: 21

LOCAL

Poor

Over: SMALL STREAM

073041401, Louisa, IA

Built 1943 Load: 21.3 t ADT: 47

LOCAL

Poor

Over: SMALL STREAM

073031704, Louisa, IA

Built 1974 Load: 21.5 t ADT: 51

FM

Poor

Over: SM STREAM

073041104, Louisa, IA

Built 1950 Load: 22.7 t ADT: 490

LOCAL

Poor

Over: SMALL STREAM

073032901, Louisa, IA

Built 1950 Load: 24.5 t ADT: 11

FM

Poor

Over: SMALL STREAM

076051101, Louisa, IA

Built 1969 Load: 25.7 t ADT: 840

FM

Poor

Over: LONG CREEK

075053202, Louisa, IA

Built 1963 Load: 25.9 t ADT: 250

FM

Poor

Over: SMALL STREAM

073030704, Louisa, IA

Built 1972 Load: 34.3 t ADT: 45

LOCAL

Poor

Over: INDIAN CREEK

075041301, Louisa, IA

Built 1969 Load: 37.7 t ADT: 62

FM

Poor

Over: STREAM

074050301, Louisa, IA

Built 1977 Load: 47.2 t ADT: 260

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.