County profile · official public datasets

Sheboygan County, WI

240 public highway bridges tracked in the FHWA National Bridge Inventory: 39.2% rated Good, 55.4% Fair, 5.4% Poor.

240
Public bridges: 39.2%
Good condition: 5.4%
Poor condition

The verdict

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

Sheboygan County pairs a better-than-median Poor-condition share among rated counties in the state with an older average build year than the state inventory.

Top 40%
lowest Poor share in state: 5.4%
Poor-condition share: 240
public highway bridges: 1979
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.

Sheboygan County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Sheboygan County ranks #29 of 72 Wisconsin counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 5.4%). Sheboygan County, Wisconsin contains 240 public highway bridges. Roughly 39.2% are rated “Good,” 55.4% “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

240

Public highway bridges in Sheboygan County

Good condition

39.2%

94 of 240 rated 7-9

Fair condition

55.4%

133 of 240 rated 5-6

Poor condition

5.4%

13 of 240 rated 4 or below

In-state Poor-share rank

#29 of 72

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

Condition distribution

Share of 240 NBI-tracked bridges by lowest applicable component rating.

Good

39.2% (94)

Fair

55.4% (133)

Poor

5.4% (13)

Sheboygan County's Poor-condition bridges carry 2,947 vehicle crossings a day

That is 0.3% 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 227 crossings a day against 3,126 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 240 of 240 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.

36.3% of Sheboygan County's bridges have passed the 50-year mark

87 of the 240 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 39.2% 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 26.8% of the county's Poor-condition bridge traffic

LRD S STAFFORD ST over MULLET RIVER, built 1920, carries 790 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 13-bridge count understates how much of the daily burden sits on a single crossing.

Share is of the 2,947 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.

1900s

1
1910s

1
1920s

8
1930s

12
1940s

2
1950s

17
1960s

25
1970s

45
1980s

51
1990s

37
2000s

15
2010s

14
2020s

12

What this shows Construction peaked in the 1980s, when 51 of the county's bridges still in the inventory were built, which is 21.3% of those with a recorded year. That cohort is now 35 to 44 years old in the 2024 inventory. Its average build year is 1979, 5 years older than the Wisconsin average of 1984.

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

The 5 Wisconsin counties nearest Sheboygan County in number of bridges, with their condition splits. Its 5.4% Poor share is the 1st-lowest of these 6. Its average build year of 1979 against a peer-group mean of 1983 is in line with the group.

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

Bridge inventory size and condition shares for Sheboygan County and the 5 Wisconsin counties closest to it in inventory size
County	Bridges	Good	Fair	Poor	Avg. built
Dunn County	245	45.7%	45.3%	9%	1982
Green County	244	45.5%	45.9%	8.6%	1978
Sheboygan County (this page)	240	39.2%	55.4%	5.4%	1979
Wood County	239	62.3%	31.8%	5.9%	1986
Buffalo County	238	63%	28.6%	8.4%	1987
Eau Claire County	236	42.8%	49.6%	7.6%	1982

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

Similar inventory size

Nearest county inventories outside WI (240 bridges here).

Jefferson Davis County, LA · 240 bridges
St. Louis city County, MO · 240 bridges
Carroll County, TN · 240 bridges
Marshall County, TN · 240 bridges

Similar average build year

Nearest mean year-built outside WI (1979 here).

Pima County, AZ · avg 1979 · 1,150 bridges
Jefferson County, KY · avg 1979 · 662 bridges
Spartanburg County, SC · avg 1979 · 638 bridges
McPherson County, KS · avg 1979 · 586 bridges

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

All 240 Good 94 Fair 133 Poor 13

All bridges (240)

Sort:

Sheboygan County Bridge Snapshot

Condition distribution

Sheboygan County's Poor-condition bridges carry 2,947 vehicle crossings a day

36.3% of Sheboygan County's bridges have passed the 50-year mark

One structure carries 26.8% of the county's Poor-condition bridge traffic

How Sheboygan 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 (240)

CTH V

LRD RISSEEUW RD

STH 28

CTH JJ MILLERSVI

STH 144

LRD S 8TH ST

STH 28 WB/57 SB-MI

CTH G

LRD MEADOWLARK RD

LRD MEADOWLARK RD

LRD SILVERCREEK-CA

STH 28 EB/57 NB-MI

LRD BLUEBERRY LA

LRD EERNISSE RD

STH 57

CTH A

STH 23 WB

CTH TAYLOR DR. (CT

CTH D

CTH SS

STH 23 EB

LRD NIAGARA AVE

CTH FF

LRD WOODLAND ROAD

CTH PP

CTH U

LRD OUR TOWN RD

LRD SHORT CUT RD

LRD CENTER ST

LRD WOODLAND RD

LRD RIVER HEIGHTS

CTH OO

LRD RIVERVIEW RD

CTH TT

CTH S

LRD S STAFFORD ST

CTH PP

LRD SPRING VALLEY

CTH M

CTH MC

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