County profile · official public datasets

Kenosha County, WI

109 public highway bridges tracked in the FHWA National Bridge Inventory: 67% rated Good, 29.4% Fair, 3.7% Poor.

109
Public bridges: 67%
Good condition: 3.7%
Poor condition

The verdict

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

Kenosha County pairs a top-quartile lowest Poor-condition share among rated counties in the state with a newer average build year than the state inventory.

Top 21%
lowest Poor share in state: 3.7%
Poor-condition share: 109
public highway bridges: 1997
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.

Kenosha County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Kenosha County ranks #15 of 72 Wisconsin counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 3.7%). Kenosha County, Wisconsin contains 109 public highway bridges. Roughly 67% are rated “Good,” 29.4% “Fair,” and 3.7% “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

109

Public highway bridges in Kenosha County

Good condition

67%

73 of 109 rated 7-9

Fair condition

29.4%

32 of 109 rated 5-6

Poor condition

3.7%

4 of 109 rated 4 or below

In-state Poor-share rank

#15 of 72

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

Condition distribution

Share of 109 NBI-tracked bridges by lowest applicable component rating.

Good

67% (73)

Fair

29.4% (32)

Poor

3.7% (4)

Kenosha County's Poor-condition bridges carry 23,000 vehicle crossings a day

That is 1.3% of the county's reported daily bridge traffic on 3.7% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 5,750 crossings a day against 18,466 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 109 of 109 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.

15.6% of Kenosha County's bridges have passed the 50-year mark

17 of the 109 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 67% 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 54.8% of the county's Poor-condition bridge traffic

CTH C over DES PLAINES RIVER, built 1938, carries 12,600 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 4-bridge count understates how much of the daily burden sits on a single crossing.

Share is of the 23,000 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.

1920s

2
1930s

4
1940s

2
1950s

5
1960s

3
1970s

3
1980s

14
1990s

14
2000s

14
2010s

30
2020s

18

What this shows Construction peaked in the 2010s, when 30 of the county's bridges still in the inventory were built, which is 27.5% of those with a recorded year. That cohort is now 5 to 14 years old in the 2024 inventory. Its average build year is 1997, 13 years newer than the Wisconsin average of 1984.

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

The 5 Wisconsin counties nearest Kenosha County in number of bridges, with their condition splits. Its 3.7% Poor share is the 2nd-lowest of these 6. Its average build year of 1997 against a peer-group mean of 1986 is 11 years newer.

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

Bridge inventory size and condition shares for Kenosha County and the 5 Wisconsin counties closest to it in inventory size
County	Bridges	Good	Fair	Poor	Avg. built
Kenosha County (this page)	109	67%	29.4%	3.7%	1997
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	93	47.3%	47.3%	5.4%	1988

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 Kenosha 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 Kenosha County, both outside Wisconsin so the neighborhoods are not the same-state size table above.

Similar inventory size

Nearest county inventories outside WI (109 bridges here).

Mariposa County, CA · 109 bridges
Boone County, IL · 109 bridges
Gove County, KS · 109 bridges
Hodgeman County, KS · 109 bridges

Similar average build year

Nearest mean year-built outside WI (1997 here).

Isanti County, MN · avg 1997 · 37 bridges
Currituck County, NC · avg 1997 · 22 bridges
Aransas County, TX · avg 1997 · 22 bridges
Bethel County, AK · avg 1997 · 13 bridges

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

All 109 Good 73 Fair 32 Poor 4

Good-condition bridges (73)

Sort:

Kenosha County Bridge Snapshot

Condition distribution

Kenosha County's Poor-condition bridges carry 23,000 vehicle crossings a day

15.6% of Kenosha County's bridges have passed the 50-year mark

One structure carries 54.8% of the county's Poor-condition bridge traffic

How Kenosha 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

Good-condition bridges (73)

STH 50 EB-STH 83 S

STH 50

USH 45

STH 50 WB-STH 83 N

STH 50

CTH K

STH 165 EB

STH 165 WB

IH 41 SB/94 EB

CTH N/38TH STREET

CTH KD

CTH 38TH ST

LRD 13TH AVE

CTH K

STH 50 EB

IH 41 NB/94 WB

LRD 286TH AVE

CTH G

STH 165 EB

STH 165 WB

CTH A

STH 50 WB

STH 165 WB

CTH WG

CTH KR EB

CTH KR WB

CTH S WB

STH 50 EB

CTH Y

CTH Q

CTH L

IH 41 SB/94 EB

IH 41 NB/94 WB

IH 41 SB/94 EB

IH 41 NB/94 WB

CTH E

CTH KR WB

CTH KR EB

CTH KR WB

STH 31 NB

STH 31 SB

LRD WEST FRONTAGE

LRD E FRONTAGE RD

IH 41 NB/94 WB

IH 41 SB/IH 94 EB

IH 41 SB/94 EB

IH 41 NB/94 WB

IH 41 SB/94 EB

IH 41 NB/94 WB

IH 41 SB/IH 94 EB

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