Total bridges
206
Public highway bridges in Walworth County
County profile · official public datasets
Walworth County, WI
206 public highway bridges tracked in the FHWA National Bridge Inventory: 34.5% rated Good, 61.7% Fair, 3.9% Poor.
- 206
- Public bridges
- 34.5%
- Good condition
- 3.9%
- Poor condition
The verdict
According to the Federal Highway Administration's 2024 National Bridge Inventory.
Walworth County posts a better-than-median Poor-condition share among rated counties in the state across mid-size county bridge inventory.
- Top 26%
- lowest Poor share in state
- 3.9%
- Poor-condition share
- 206
- public highway bridges
- 1981
- 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.
Walworth County Bridge Snapshot
According to the Federal Highway Administration's 2024 National Bridge Inventory, Walworth County ranks #19 of 72 Wisconsin counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 3.9%). Walworth County, Wisconsin contains 206 public highway bridges. Roughly 34.5% are rated “Good,” 61.7% “Fair,” and 3.9% “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
34.5%
71 of 206 rated 7-9
Fair condition
61.7%
127 of 206 rated 5-6
Poor condition
3.9%
8 of 206 rated 4 or below
In-state Poor-share rank
#19 of 72
Among Wisconsin counties with 5+ bridges, lower share ranks better
Condition distribution
Share of 206 NBI-tracked bridges by lowest applicable component rating.
Good 34.5% (71)
Fair 61.7% (127)
Poor 3.9% (8)
Walworth County's Poor-condition bridges carry 13,008 vehicle crossings a day
That is 1.2% of the county's reported daily bridge traffic on 3.9% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 1,626 crossings a day against 4,345 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 206 of 206 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.
41.7% of Walworth County's bridges have passed the 50-year mark
86 of the 206 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 34.5% 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 76.1% of the county's Poor-condition bridge traffic
USH 12/STH 67 over SUGAR CREEK, built 1966, carries 9,900 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 8-bridge count understates how much of the daily burden sits on a single crossing.
Share is of the 13,008 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.
When Walworth County's bridges were built
206 bridges with a recorded construction year, grouped by decade
- 1920s 3
1920–1929
3 bridges
- 1930s 7
1930–1939
7 bridges
- 1940s 2
1940–1949
2 bridges
- 1950s 4
1950–1959
4 bridges
- 1960s
1960–1969
39 bridges
- 1970s
1970–1979
70 bridges
- 1980s 23
1980–1989
23 bridges
- 1990s 7
1990–1999
7 bridges
- 2000s 18
2000–2009
18 bridges
- 2010s 26
2010–2019
26 bridges
- 2020s 7
2020–2029
7 bridges
What this shows Construction peaked in the 1970s, when 70 of the county's bridges still in the inventory were built, which is 34% of those with a recorded year. That cohort is now 45 to 54 years old in the 2024 inventory. Its average build year (1981) matches the Wisconsin average (1984).
How Walworth County compares with Wisconsin's closest counties by inventory size
The 5 Wisconsin counties nearest Walworth County in number of bridges, with their condition splits. Its 3.9% Poor share is the 1st-lowest of these 6. Its average build year of 1981 against a peer-group mean of 1982 is in line with the group.
Showing the 5 closest of 71 Wisconsin counties eligible for comparison.
| County | Bridges | Good | Fair | Poor | Avg. built |
|---|---|---|---|---|---|
| Jackson County | 218 | 37.2% | 55% | 7.8% | 1975 |
| Lafayette County | 217 | 53.5% | 38.2% | 8.3% | 1978 |
| Dodge County | 212 | 48.1% | 47.6% | 4.2% | 1983 |
| Crawford County | 211 | 56.4% | 38.4% | 5.2% | 1987 |
| Iowa County | 209 | 67.5% | 26.8% | 5.7% | 1989 |
| Walworth County (this page) | 206 | 34.5% | 61.7% | 3.9% | 1981 |
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 Walworth 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 Walworth County, both outside Wisconsin so the neighborhoods are not the same-state size table above.
Similar inventory size
Nearest county inventories outside WI (206 bridges here).
- Dale County, AL · 206 bridges
- Henry County, IN · 206 bridges
- Audubon County, IA · 206 bridges
- Bourbon County, KS · 206 bridges
Similar average build year
Nearest mean year-built outside WI (1981 here).
- Franklin County, OH · avg 1981 · 922 bridges
- Greenville County, SC · avg 1981 · 635 bridges
- Montgomery County, OH · avg 1981 · 632 bridges
- McLean County, IL · avg 1981 · 624 bridges
Source: FHWA National Bridge Inventory, 2024 release. Peers floor at 10 bridges so stub inventories cannot own the match.
Fair-condition bridges (127)
USH 12 WB
FairOver: LRD MACLEAN RD
5.6M W JCT STH 120 TO N, Walworth, WI
Built 1968 Load: 27.5 t ADT: 9,400
STH 67 NB
FairOver: USH 12 EB
3.1M N JCT IH 43 TO N, Walworth, WI
Built 1968 Load: 27.5 t ADT: 4,050
STH 67 SB
FairOver: USH 12 EB
1.9M S JCT CTH ES, Walworth, WI
Built 1968 Load: 27.5 t ADT: 4,040
IH 43 SB
FairOver: USH 12
1.8M S JCT STH 11, Walworth, WI
Built 1969 Load: 27.5 t ADT: 11,850
IH 43 NB
FairOver: USH 12
1.9M N JCT STH 67 TO N, Walworth, WI
Built 1969 Load: 27.5 t ADT: 11,850
LRD HODGES RD
FairOver: SUGAR CREEK
0.5M N JCT CTH ES, Walworth, WI
Built 1989 Load: 27.5 t ADT: 317
LRD LAKE SHORE RD
FairOver: LITTLE TURTLE CREEK
2.2M W JCT CTH C, Walworth, WI
Built 1981 Load: 27.5 t ADT: 205
CTH H
FairOver: W BR NIPPERSINK CREEK
1.0M N CTH B, Walworth, WI
Built 1982 Load: 27.5 t ADT: 3,200
CTH U
FairOver: USH 12
0.7M E JCT CTH JJ, Walworth, WI
Built 1965 Load: 29.2 t ADT: 1,900
USH 12 WB
FairOver: STH 120
1.2 MI W JCT STH 50, Walworth, WI
Built 1967 Load: 29.2 t ADT: 11,850
USH 12 EB
FairOver: STH 120
7.3 MI E JCT IH 43, Walworth, WI
Built 1967 Load: 29.2 t ADT: 9,400
LRD GEORGE ST (DEA
FairOver: WHITEWATER RIVER
0.1M N JCT USH 12, Walworth, WI
Built 1985 Load: 29.2 t ADT: 100
LRD STONE SCHOOL R
FairOver: IH 43
1.7 MI N JCT CTH L, Walworth, WI
Built 1971 Load: 29.2 t ADT: 1,400
IH 43 NB
FairOver: STH 20
1.8 MI N JCT STH 120, Walworth, WI
Built 1971 Load: 29.2 t ADT: 11,550
IH 43 SB
FairOver: STH 20
5.3 MI S JCT STH 83, Walworth, WI
Built 1971 Load: 29.2 t ADT: 21,600
IH 43 SB
FairOver: LRD HODUNK RD
7.2 MI S JCT STH 20, Walworth, WI
Built 1972 Load: 29.2 t ADT: 9,950
IH 43 NB
FairOver: LRD HODUNK RD
2.8 MI N JCT STH 11, Walworth, WI
Built 1972 Load: 29.2 t ADT: 9,950
IH 43 NB
FairOver: CTH H
1.3 MI N JCT STH 67, Walworth, WI
Built 1975 Load: 29.2 t ADT: 11,850
LRD PETRIE RD
FairOver: JACKSON CREEK
0.2M S JCT CTH H, Walworth, WI
Built 1979 Load: 29.2 t ADT: 274
STH 36
FairOver: ORE CREEK
2.5M N JCT STH 120, Walworth, WI
Built 1929 Load: 29.2 t ADT: 4,100
USH 12 EB
FairOver: WHITE RIVER STATE TRAIL
0.9 MI E JCT IH 43/USH 12, Walworth, WI
Built 1968 Load: 30.8 t ADT: 9,400
USH 12 WB
FairOver: WHITE RIVER STATE TRAIL
5.9 MI W JCT STH 120, Walworth, WI
Built 1968 Load: 30.8 t ADT: 9,400
IH 43 SB
FairOver: LRD TOWN LINE RD
3.1 MI S JCT STH 20, Walworth, WI
Built 1972 Load: 30.8 t ADT: 9,800
IH 43 SB
FairOver: LRD PLANK RD
9.0 MI S JCT STH 20, Walworth, WI
Built 1972 Load: 30.8 t ADT: 9,950
IH 43 SB
FairOver: STH 11
9.7 MI S JCT STH 20, Walworth, WI
Built 1972 Load: 30.8 t ADT: 9,950
IH 43 NB
FairOver: STH 11
1.8 MI N JCT USH 12, Walworth, WI
Built 1972 Load: 30.8 t ADT: 9,950
IH 43 SB
FairOver: CTH H
0.38 MI S JCT USH 12, Walworth, WI
Built 1975 Load: 30.8 t ADT: 11,600
CTH ES
FairOver: HONEY CREEK
0.3M E JCT CTH N, Walworth, WI
Built 1949 Load: 32.4 t ADT: 1,900
CTH X
FairOver: BR LITTLE TURTLE CREEK
0.8M W JCT CTH C, Walworth, WI
Built 1958 Load: 32.4 t ADT: 2,100
CTH N
FairOver: HONEY CREEK
0.2M N JCT CTH ES, Walworth, WI
Built 1977 Load: 32.4 t ADT: 1,100
LRD DARLING RD
FairOver: N BR NIPPERSINK CREEK
0.8M S JCT CTH B, Walworth, WI
Built 1985 Load: 32.4 t ADT: 231
CTH JS
FairOver: WHITE RIVER
1.4M E JCT CTH DD, Walworth, WI
Built 1987 Load: 32.4 t ADT: 2,800
CTH D
FairOver: IH 43
0.9 MI E JCT CTH ES, Walworth, WI
Built 1972 Load: 32.4 t ADT: 1,900
IH 43 SB
FairOver: HONEY CREEK
0.85 MI S JCT STH 20, Walworth, WI
Built 1971 Load: 32.4 t ADT: 11,550
IH 43 NB
FairOver: STH 50
6.4 MI N JCT USH 14, Walworth, WI
Built 1975 Load: 32.4 t ADT: 10,950
IH 43 SB
FairOver: STH 50
4.6 MI S JCT STH 67, Walworth, WI
Built 1975 Load: 32.4 t ADT: 9,000
LRD BORG RD
FairOver: IH 43
0.3 MI S JCT STH 50, Walworth, WI
Built 1976 Load: 32.4 t ADT: 6,500
IH 43 NB
FairOver: LRD ELM RIDGE RD
3.2 MI N JCT USH 14, Walworth, WI
Built 1975 Load: 32.4 t ADT: 10,850
IH 43 SB
FairOver: LRD ELM RIDGE RD
2.8 MI S JCT STH 50, Walworth, WI
Built 1975 Load: 32.4 t ADT: 10,850
IH 43 SB
FairOver: USH 14
6.3 MI S JCT STH 50, Walworth, WI
Built 1976 Load: 32.4 t ADT: 9,400
IH 43 NB
FairOver: USH 14
8.3 MI N JCT STH 140, Walworth, WI
Built 1975 Load: 32.4 t ADT: 9,400
IH 43 SB
FairOver: LRD NORTH RD & TURTLE CR
2.8M S JCT USH 14 TO W, Walworth, WI
Built 1976 Load: 32.4 t ADT: 9,400
IH 43
FairOver: BR JACKSON CREEK
0.5 MI S JCT STH 67, Walworth, WI
Built 1976 Load: 32.4 t ADT: 21,900
LRD MILLIS ROAD
FairOver: WHITEWATER CREEK
0.6M W JCT CTH P, Walworth, WI
Built 1980 Load: 32.4 t ADT: 94
LRD GENEVA ST
FairOver: SOUTHWICK CREEK
0.2M E JCT STH 67, Walworth, WI
Built 1939 Load: 32.4 t ADT: 5,900
LRD TWIN LAKES RD
FairOver: E BR NIPPERSINK CREEK
0.6M W JCT CTH B, Walworth, WI
Built 1989 Load: 34.0 t ADT: 1,200
IH 43 SB
FairOver: SUGAR CREEK
4.8 MI S JCT STH 120, Walworth, WI
Built 1971 Load: 34.0 t ADT: 9,800
IH 43 SB
FairOver: CTH X - BELOIT RD
3.1 MI S JCT STH 50, Walworth, WI
Built 1975 Load: 34.0 t ADT: 10,850
IH 43 SB
FairOver: CMSTPP RR
2.0 MI S JCT USH 14, Walworth, WI
Built 1976 Load: 34.0 t ADT: 9,400
IH 43 NB
FairOver: CMSTPP RR
6.0 MI N JCT USH 140, Walworth, WI
Built 1976 Load: 34.0 t ADT: 9,400
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.