County profile · official public datasets

Oneida County, WI

61 public highway bridges tracked in the FHWA National Bridge Inventory: 41% rated Good, 44.3% Fair, 14.8% Poor.

61
Public bridges
41%
Good condition
14.8%
Poor condition

The verdict

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

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

70th
of 72 on Poor share
14.8%
Poor-condition share
61
public highway bridges
1984
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.

Oneida County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Oneida County ranks #70 of 72 Wisconsin counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 14.8%). Oneida County, Wisconsin contains 61 public highway bridges. Roughly 41% are rated “Good,” 44.3% “Fair,” and 14.8% “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

61

Public highway bridges in Oneida County

Good condition

41%

25 of 61 rated 7-9

Fair condition

44.3%

27 of 61 rated 5-6

Poor condition

14.8%

9 of 61 rated 4 or below

In-state Poor-share rank

#70 of 72

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

Condition distribution

Share of 61 NBI-tracked bridges by lowest applicable component rating.

Good
41% (25)
Fair
44.3% (27)
Poor
14.8% (9)

Oneida County's Poor-condition bridges carry 20,855 vehicle crossings a day

That is 12.7% of the county's reported daily bridge traffic on 14.8% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 2,317 crossings a day against 2,503 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 61 of 61 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.

24.6% of Oneida County's bridges have passed the 50-year mark

15 of the 61 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 41% 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 39.4% of the county's Poor-condition bridge traffic

LRD KEMP STREET over WISCONSIN RIVER 46, built 1956, carries 8,213 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 9-bridge count understates how much of the daily burden sits on a single crossing.

Share is of the 20,855 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.

When Oneida County's bridges were built

61 bridges with a recorded construction year, grouped by decade

bridges

What this shows Construction peaked in the 1990s, when 15 of the county's bridges still in the inventory were built, which is 24.6% of those with a recorded year. That cohort is now 25 to 34 years old in the 2024 inventory. Its average build year (1984) matches the Wisconsin average (1984).

Source FHWA National Bridge Inventory (year built) As of 2024 NBI release

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

The 5 Wisconsin counties nearest Oneida County in number of bridges, with their condition splits. Its 14.8% Poor share is the 5th-lowest of these 6. Its average build year of 1984 against a peer-group mean of 1982 is in line with the group.

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

Bridge inventory size and condition shares for Oneida County and the 5 Wisconsin counties closest to it in inventory size
County Bridges Poor
Burnett County 67 6%
Calumet County 62 17.7%
Oneida County (this page) 61 14.8%
Pepin County 57 7%
Forest County 53 13.2%
Waushara County 53 5.7%

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

Similar inventory size

Nearest county inventories outside WI (61 bridges here).

Similar average build year

Nearest mean year-built outside WI (1984 here).

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

All 61 Good 25 Fair 27 Poor 9

Good-condition bridges (25)

USH 45

Good

Over: WISCONSIN CENTRAL

0.3M N JCT CTH C, Oneida, WI

Built 1969 Load: 29.2 t ADT: 2,000

USH 8-STH 47

Good

Over: PELICAN RIVER

3.8M E JCT STH 17, Oneida, WI

Built 1990 Load: 30.8 t ADT: 3,000

STH 17 NB

Good

Over: PELICAN RIVER

0.3M N JCT STH 8, Oneida, WI

Built 2003 Load: 32.4 t ADT: 5,900

LRD THOROUGHFARE R

Good

Over: MID LAKE-LAKE TOMAHAWK

2.1M E JCT USH 51, Oneida, WI

Built 2006 Load: 32.4 t ADT: 750

STH 32

Good

Over: SCOTT CR

1.5M W ECL, Oneida, WI

Built 2022 Load: 32.4 t ADT: 600

USH 45

Good

Over: MONICO CREEK

0.1 MI S JCT USH 8, Oneida, WI

Built 2023 Load: 32.4 t ADT: 3,100

LRD CTH B

Good

Over: WOLF RIVER

3.02 M E OF US 45 & CTH B, Oneida, WI

Built 2023 Load: 32.4 t ADT: 450

USH 8-STH 47

Good

Over: N BR PELICAN RIVER

5.5M E JCT CTH C, Oneida, WI

Built 1977 Load: 34.0 t ADT: 4,000

STH 32

Good

Over: BIG STONE LAKE/DEER LAKE

12.4M N JCT CTH S, Oneida, WI

Built 1981 Load: 34.0 t ADT: 510

LRD OLD 8 ROAD

Good

Over: LITTLE RICE RIVER

0.5M W JCT CTH Y, Oneida, WI

Built 2003 Load: 34.0 t ADT: 318

USH 8-STH 47

Good

Over: WISCONSIN RIVER 46

11.6M E JCT CTH N, Oneida, WI

Built 1990 Load: 35.6 t ADT: 6,600

LRD BRIDGE RD

Good

Over: WISCONSIN RIVER 49

0.6M E JCT STH 47, Oneida, WI

Built 1979 Load: 35.6 t ADT: 930

USH 51

Good

Over: BEARSKIN CREEK

6.8M N JCT USH 8 TO W, Oneida, WI

Built 1992 Load: 35.6 t ADT: 8,200

CTH E

Good

Over: GILMORE CREEK

2.7M S JCT CTH J, Oneida, WI

Built 1996 Load: 35.6 t ADT: 650

LRD WILLOW DAM RD

Good

Over: TOMAHAWK R

1.2M N JCT CTH D, Oneida, WI

Built 2007 Load: 35.6 t ADT: 320

CTH D

Good

Over: WISCONSIN RIVER 51

0.4M E JCT CTH E, Oneida, WI

Built 2009 Load: 38.6 t ADT: 600

STH 70

Good

Over: MUD CREEK

3.1M E JCT CTH F, Oneida, WI

Built 1966 Load: 38.9 t ADT: 6,000

USH 51

Good

Over: CTH N

1.9M N JCT USH 8 TO W, Oneida, WI

Built 1992 Load: 42.1 t ADT: 7,100

LRD BLUE LAKE RD

Good

Over: TOMAHAWK RIVER

4.9M W JCT USH 51, Oneida, WI

Built 1990 Load: 42.1 t ADT: 283

CTH G ONEIDA AVE

Good

Over: PELICAN RIVER

0.3M S JCT USH 8, Oneida, WI

Built 1992 Load: 42.1 t ADT: 3,000

LRD LAKESHORE DR

Good

Over: GUDEGAST CR

AT GUDEGAST CR, Oneida, WI

Built 2005 Load: 43.7 t ADT: 376

USH 51 NB & SB

Good

Over: ROCKY RUN CREEK

0.8M S CTH Y, Oneida, WI

Built 2016 Load: 46.3 t ADT: 7,100

CTH N

Good

Over: LITTLE RICE CREEK

1.8M W JCT USH 8, Oneida, WI

Built 2007 Load: 47.0 t ADT: 301

LRD RIVER RD

Good

Over: WISCONSIN RIVER 50

2.8M E JCT STH 47, Oneida, WI

Built 1997 Load: 51.8 t ADT: 429

LRD MEISTER STOCKL

Good

Over: WOLF RIVER

2.5M N JCT CTH B, Oneida, WI

Built 1998 Load: 61.6 t ADT: 54

Read our methodology - how this data is sourced, computed, and verified.

Related

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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.