County profile · official public datasets

Kewaunee County, WI

93 public highway bridges tracked in the FHWA National Bridge Inventory: 47.3% rated Good, 47.3% Fair, 5.4% Poor.

93
Public bridges: 47.3%
Good condition: 5.4%
Poor condition

The verdict

According to the Federal Highway Administration's 2024 National Bridge Inventory.

Kewaunee County posts a better-than-median Poor-condition share among rated counties in the state across rated county bridge inventory.

Top 39%
lowest Poor share in state: 5.4%
Poor-condition share: 93
public highway bridges: 1988
avg year built

Poor is an FHWA condition category from the lowest applicable component rating (4 or below), not a live crossing-safety or closure decision. Rankings cover counties with at least five public highway bridges.

Kewaunee County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Kewaunee County ranks #28 of 72 Wisconsin counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 5.4%). Kewaunee County, Wisconsin contains 93 public highway bridges. Roughly 47.3% are rated “Good,” 47.3% “Fair,” and 5.4% “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.

Total bridges

Public highway bridges in Kewaunee County

Good condition

47.3%

44 of 93 rated 7-9

Fair condition

47.3%

44 of 93 rated 5-6

Poor condition

5.4%

5 of 93 rated 4 or below

In-state Poor-share rank

#28 of 72

Among Wisconsin counties with 5+ bridges, lower share ranks better

Condition distribution

Share of 93 NBI-tracked bridges by lowest applicable component rating.

Good

47.3% (44)

Fair

47.3% (44)

Poor

5.4% (5)

Kewaunee County's Poor-condition bridges carry 4,266 vehicle crossings a day

That is 3.1% of the county's reported daily bridge traffic on 5.4% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 853 crossings a day against 2,141 for a Good-condition one. A Poor rating is a condition category, not a closure or a live safety judgement; it means the lowest applicable component rating is 4 or below.

Computed over the 93 of 93 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.

17.2% of Kewaunee County's bridges have passed the 50-year mark

16 of the 93 bridges with a recorded construction year were built in 1974 or earlier. Age alone is not a defect: a well-maintained older bridge can rate Good, and 47.3% of this county's inventory does. Even so, this older cohort is the population from which future Poor ratings are drawn, which is why the age profile below matters alongside the condition split above.

Cutoff derives from the 2024 release year minus a 50-year design life. Source: FHWA National Bridge Inventory, 2024 release.

One structure carries 44.5% of the county's Poor-condition bridge traffic

CTH AB MAIN ST over SCHOOL CREEK, built 1932, carries 1,900 vehicles a day, the most of any Poor-rated structure here. The county's Poor-condition exposure is concentrated rather than evenly spread, so the 5-bridge count understates how much of the daily burden sits on a single crossing.

Share is of the 4,266 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.

1930s

1
1940s

3
1950s

7
1960s

2
1970s

10
1980s

25
1990s

21
2000s

14
2010s

6
2020s

4

What this shows Construction peaked in the 1980s, when 25 of the county's bridges still in the inventory were built, which is 26.9% of those with a recorded year. That cohort is now 35 to 44 years old in the 2024 inventory. Its average build year (1988) matches the Wisconsin average (1984).

How Kewaunee County compares with Wisconsin's closest counties by inventory size

The 5 Wisconsin counties nearest Kewaunee County in number of bridges, with their condition splits. Its 5.4% Poor share is the 3rd-lowest of these 6. Its average build year of 1988 against a peer-group mean of 1985 is in line with the group.

Showing the 5 closest of 71 Wisconsin counties eligible for comparison.

Bridge inventory size and condition shares for Kewaunee County and the 5 Wisconsin counties closest to it in inventory size
County	Bridges	Good	Fair	Poor	Avg. built
Ozaukee County	105	35.2%	61.9%	2.9%	1982
Price County	104	53.8%	35.6%	10.6%	1982
Bayfield County	103	56.3%	38.8%	4.9%	1990
Sawyer County	97	44.3%	43.3%	12.4%	1987
Kewaunee County (this page)	93	47.3%	47.3%	5.4%	1988
Ashland County	84	52.4%	40.5%	7.1%	1983

Each share is of that county's own total tracked bridges; peers are the counties with 5 or more bridges whose inventory size is closest to Kewaunee County's. Source: FHWA National Bridge Inventory, 2024 release.

Nationwide counties with similar inventory size or average build year

Two NBI-derived peer sets for Kewaunee County, both outside Wisconsin so the neighborhoods are not the same-state size table above.

Similar inventory size

Nearest county inventories outside WI (93 bridges here).

Baker County, FL · 93 bridges
Banks County, GA · 93 bridges
Haralson County, GA · 93 bridges
Alexander County, IL · 93 bridges

Similar average build year

Nearest mean year-built outside WI (1988 here).

Travis County, TX · avg 1988 · 1,544 bridges
Grant County, OK · avg 1988 · 476 bridges
Loudoun County, VA · avg 1988 · 442 bridges
Licking County, OH · avg 1988 · 439 bridges

Source: FHWA National Bridge Inventory, 2024 release. Peers floor at 10 bridges so stub inventories cannot own the match.

All 93 Good 44 Fair 44 Poor 5

All bridges (93)

Sort:

Kewaunee County Bridge Snapshot

Condition distribution

Kewaunee County's Poor-condition bridges carry 4,266 vehicle crossings a day

17.2% of Kewaunee County's bridges have passed the 50-year mark

One structure carries 44.5% of the county's Poor-condition bridge traffic

How Kewaunee County compares with Wisconsin's closest counties by inventory size

Nationwide counties with similar inventory size or average build year

Similar inventory size

Similar average build year

All bridges (93)

LRD BLACK ASH ROAD

CTH A

CTH C

CTH D

CTH U

LRD WASHINGTON RD

LRD COLLIGIATE RD

CTH B

LRD LOWELL RD

CTH AB

LRD RENDEZVOUS RD

CTH K

LRD N VALLEY ROAD

CTH E

LRD VALLEY RD

CTH C

LRD LANGES CORNER

LRD VALLEY ROAD

STH 57

STH 42

STH 42

LRD CURRAN RD

LRD BAYVIEW RD

LRD PHEASANT RD

LRD NORTH COUNTY L

LRD KROK RD

CTH J

CTH P

LRD RIVER RD

LRD SANDY BAY RD

LRD NUCLEAR RD

STH 42-4TH ST

LRD WALHAIN RD

LRD ROCKLEDGE RD

CTH A

CTH K

CTH S PERRY ST

STH 54

LRD CLYDE HILL RD

CTH B

CTH C

LRD HILLSIDE RD

CTH F

LRD RENDEZVOUS RD

LRD BOLT RD

LRD LAKESHORE RD

LRD E MONROE ROAD

STH 54

LRD HERITAGE ROAD

STH 29

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