Total bridges
105
Public highway bridges in Ozaukee County
County profile · official public datasets
Ozaukee County, WI
105 public highway bridges tracked in the FHWA National Bridge Inventory: 35.2% rated Good, 61.9% Fair, 2.9% Poor.
- 105
- Public bridges
- 35.2%
- Good condition
- 2.9%
- Poor condition
The verdict
According to the Federal Highway Administration's 2024 National Bridge Inventory.
Ozaukee County posts a top-10% lowest Poor-condition share among rated counties in the state across mid-size county bridge inventory.
- Top 7%
- lowest Poor share in state
- 2.9%
- Poor-condition share
- 105
- public highway bridges
- 1982
- 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.
Ozaukee County Bridge Snapshot
According to the Federal Highway Administration's 2024 National Bridge Inventory, Ozaukee County ranks #5 of 72 Wisconsin counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 2.9%). Ozaukee County, Wisconsin contains 105 public highway bridges. Roughly 35.2% are rated “Good,” 61.9% “Fair,” and 2.9% “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.
Good condition
35.2%
37 of 105 rated 7-9
Fair condition
61.9%
65 of 105 rated 5-6
Poor condition
2.9%
3 of 105 rated 4 or below
In-state Poor-share rank
#5 of 72
Among Wisconsin counties with 5+ bridges, lower share ranks better
Condition distribution
Share of 105 NBI-tracked bridges by lowest applicable component rating.
Good 35.2% (37)
Fair 61.9% (65)
Poor 2.9% (3)
Ozaukee County's Poor-condition bridges carry 1,693 vehicle crossings a day
That is 0.2% of the county's reported daily bridge traffic on 2.9% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 564 crossings a day against 7,966 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 105 of 105 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.
52.4% of Ozaukee County's bridges have passed the 50-year mark
55 of the 105 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 35.2% 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 82.7% of the county's Poor-condition bridge traffic
LRD CEDAR CREEK RD over CEDAR CREEK, built 1970, carries 1,400 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 3-bridge count understates how much of the daily burden sits on a single crossing.
Share is of the 1,693 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.
When Ozaukee County's bridges were built
105 bridges with a recorded construction year, grouped by decade
- 1910s 1
1910–1919
1 bridges
- 1920s 1
1920–1929
1 bridges
- 1930s 1
1930–1939
1 bridges
- 1940s 2
1940–1949
2 bridges
- 1950s 5
1950–1959
5 bridges
- 1960s 9
1960–1969
9 bridges
- 1970s
1970–1979
38 bridges
- 1980s
1980–1989
17 bridges
- 1990s 11
1990–1999
11 bridges
- 2000s 7
2000–2009
7 bridges
- 2010s 3
2010–2019
3 bridges
- 2020s 10
2020–2029
10 bridges
What this shows Construction peaked in the 1970s, when 38 of the county's bridges still in the inventory were built, which is 36.2% of those with a recorded year. That cohort is now 45 to 54 years old in the 2024 inventory. Its average build year (1982) matches the Wisconsin average (1984).
How Ozaukee County compares with Wisconsin's closest counties by inventory size
The 5 Wisconsin counties nearest Ozaukee County in number of bridges, with their condition splits. Its 2.9% Poor share is the 1st-lowest of these 6. Its average build year of 1982 against a peer-group mean of 1989 is 7 years older.
Showing the 5 closest of 71 Wisconsin counties eligible for comparison.
| County | Bridges | Good | Fair | Poor | Avg. built |
|---|---|---|---|---|---|
| Kenosha County | 109 | 67% | 29.4% | 3.7% | 1997 |
| Ozaukee County (this page) | 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 Ozaukee 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 Ozaukee County, both outside Wisconsin so the neighborhoods are not the same-state size table above.
Similar inventory size
Nearest county inventories outside WI (105 bridges here).
- Bradley County, AR · 105 bridges
- Fulton County, AR · 105 bridges
- Izard County, AR · 105 bridges
- Calaveras County, CA · 105 bridges
Similar average build year
Nearest mean year-built outside WI (1982 here).
- Oklahoma County, OK · avg 1982 · 1,216 bridges
- Jackson County, MO · avg 1982 · 930 bridges
- Champaign County, IL · avg 1982 · 727 bridges
- Broward County, FL · avg 1982 · 686 bridges
Source: FHWA National Bridge Inventory, 2024 release. Peers floor at 10 bridges so stub inventories cannot own the match.
Fair-condition bridges (65)
STH 60
FairOver: CEDAR CREEK
0.3M E JCT CTH I, Ozaukee, WI
Built 1994 Load: 35.6 t ADT: 14,900
LRD HIGHLAND RD
FairOver: PIGEON CREEK
0.5M E JCT STH 181, Ozaukee, WI
Built 1993 Load: 35.6 t ADT: 4,000
LRD NORTHWOODS RD
FairOver: IH 43
1.4 MI N JCT STH 33, Ozaukee, WI
Built 1974 Load: 37.3 t ADT: 200
IH 43-STH 32
FairOver: SUCKER CREEK
3.7M N JCT STH 32 TO S, Ozaukee, WI
Built 1974 Load: 37.3 t ADT: 26,300
LRD WISCONSIN AVE
FairOver: SAUK CREEK
0.1M S JCT STH 32, Ozaukee, WI
Built 1981 Load: 37.3 t ADT: 2,500
LRD BONNIWELL RD
FairOver: ULAO CREEK
0.6M W JCT CTH W, Ozaukee, WI
Built 1987 Load: 37.3 t ADT: 420
LRD RIVERSIDE ROAD
FairOver: N BR MILWAUKEE RIVER
1.6M N JCT CTH A, Ozaukee, WI
Built 1986 Load: 38.9 t ADT: 115
LRD CEDAR CREEK RD
FairOver: CEDAR CREEK
0.7M W JCT CTH I, Ozaukee, WI
Built 2004 Load: 38.9 t ADT: 1,400
LRD DONGES BAY ROA
FairOver: LITTLE MENOMONEE RIVER
1.8M W JCT STH 181, Ozaukee, WI
Built 1990 Load: 40.5 t ADT: 2,700
LRD BRIDGE ST
FairOver: MILWAUKEE RIVER
0.1M E JCT STH 57, Ozaukee, WI
Built 1996 Load: 40.5 t ADT: 1,300
LRD HIGHLAND RD
FairOver: MILWAUKEE RIVER
0.8M W JCT CTH W, Ozaukee, WI
Built 1996 Load: 40.5 t ADT: 6,800
IH 43 SB
FairOver: STH 57 NB
3.3M S JCT STH 32, Ozaukee, WI
Built 1974 Load: 42.1 t ADT: 15,400
IH 43 NB
FairOver: CTH KK
2.6 MI N JCT STH 33, Ozaukee, WI
Built 1974 Load: 42.1 t ADT: 15,400
CTH W
FairOver: ULAO CREEK
M S JCT CTH T, Ozaukee, WI
Built 1981 Load: 53.5 t ADT: 8,700
LRD FALLS RD
FairOver: MILWAUKEE RIVER
0.1 M E OF JCT GREEN BAY, Ozaukee, WI
Built 1985 Load: 53.5 t ADT: 5,300
Read our methodology - how this data is sourced, computed, and verified.
Related
Data sourced from official public datasets. See our methodology for details. Retrieved and formatted by PlainBridges
Every figure on PlainBridges 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. NBI condition categories reflect the latest reported inventory record, not a live safety, closure, or travel decision.