State profile · Near median Poor share

Wisconsin bridge safety

According to the Federal Highway Administration's 2024 National Bridge Inventory, condition ratings, load ratings, and Poor-condition shares for every public highway bridge in Wisconsin.

14,446
Public bridges
51.0%
Good condition
6.5%
Poor condition

Wisconsin holds 14,446 public highway bridges (#19 of 52 by inventory) with a 6.52% Poor share (#23 of 52 by Poor share).

That is 6.5% of the state's inventory, against an average of 7.5% across the 54 states and territories with Poor-rated bridges on file, which places it 30 of 54 ordered from the lowest Poor share upward. A bridge is rated Poor when its weakest applicable component scores 4 or below on the inspecting agency's 0-9 scale, so the category is a maintenance and funding signal rather than a closure order or a live crossing-safety verdict.

Inventory: FHWA NBI 2024 · last ETL August 2026

Total Bridges

14,446

Public highway bridges in Wisconsin

Good Condition

51.0%

7,368 bridges rated 7-9

1.0pp vs 50% benchmark

Poor Condition

6.5%

942 bridges whose lowest applicable component is rated 0-4

-1.0pp vs national avg 7.5%

Wisconsin vs national bridge condition

Wisconsin - Good condition share 51.0%
National avg

Share of bridges rated 7-9 on the FHWA 0-9 scale (deck, superstructure, substructure all good).

Wisconsin - Poor-condition share 21.7%
National avg

Lower is better. Bar maxes at 30% (worst-state ceiling). National average sits at 7.5%.

Wisconsin in the national condition pattern

Each point is a state or territory in the FHWA NBI; the highlighted point is this profile.

Inventory size and Poor-condition share are different measures: Wisconsin has 14,446 bridges and a 6.5% Poor-condition share in the 2024 NBI, rank #30 of 54 jurisdictions ordered from the lowest share upward. The dashed comparisons mark the national average state rate and the midpoint of the plotted inventory range; neither is a live safety or closure threshold. Scatter plot of 54 data points. 0%10%20%30%40% 0k20k40k60k Public bridges in inventory (thousands) Poor-condition share (%) WI, Public bridges in inventory (thousands): 14.4k · Poor-condition share (%): 6.52%AL, Public bridges in inventory (thousands): 16.2k · Poor-condition share (%): 3.35%AK, Public bridges in inventory (thousands): 1.7k · Poor-condition share (%): 7.89%AZ, Public bridges in inventory (thousands): 8.6k · Poor-condition share (%): 1.15%AR, Public bridges in inventory (thousands): 13k · Poor-condition share (%): 5.43%CA, Public bridges in inventory (thousands): 25.8k · Poor-condition share (%): 5.91%CO, Public bridges in inventory (thousands): 9k · Poor-condition share (%): 4.82%CT, Public bridges in inventory (thousands): 4.4k · Poor-condition share (%): 4.72%DE, Public bridges in inventory (thousands): 0.9k · Poor-condition share (%): 1.26%DC, Public bridges in inventory (thousands): 0.3k · Poor-condition share (%): 1.95%FL, Public bridges in inventory (thousands): 13k · Poor-condition share (%): 2.79%GA, Public bridges in inventory (thousands): 15.1k · Poor-condition share (%): 1.59%GU, Public bridges in inventory (thousands): 0k · Poor-condition share (%): 12.77%HI, Public bridges in inventory (thousands): 1.2k · Poor-condition share (%): 6.53%ID, Public bridges in inventory (thousands): 4.6k · Poor-condition share (%): 4.9%IL, Public bridges in inventory (thousands): 26.9k · Poor-condition share (%): 9.35%IN, Public bridges in inventory (thousands): 19.5k · Poor-condition share (%): 5.22%IA, Public bridges in inventory (thousands): 23.7k · Poor-condition share (%): 19.16%KS, Public bridges in inventory (thousands): 24.9k · Poor-condition share (%): 5.26%KY, Public bridges in inventory (thousands): 14.5k · Poor-condition share (%): 7.37%LA, Public bridges in inventory (thousands): 12.7k · Poor-condition share (%): 11.48%ME, Public bridges in inventory (thousands): 2.5k · Poor-condition share (%): 15.41%MD, Public bridges in inventory (thousands): 5.5k · Poor-condition share (%): 4.56%MA, Public bridges in inventory (thousands): 5.3k · Poor-condition share (%): 8.88%MI, Public bridges in inventory (thousands): 11.4k · Poor-condition share (%): 11.27%MN, Public bridges in inventory (thousands): 13.5k · Poor-condition share (%): 4.44%MS, Public bridges in inventory (thousands): 16.7k · Poor-condition share (%): 6.03%MO, Public bridges in inventory (thousands): 24.6k · Poor-condition share (%): 8.95%MT, Public bridges in inventory (thousands): 5.2k · Poor-condition share (%): 6.81%NE, Public bridges in inventory (thousands): 15.4k · Poor-condition share (%): 7.9%NV, Public bridges in inventory (thousands): 2.1k · Poor-condition share (%): 1.14%NH, Public bridges in inventory (thousands): 2.5k · Poor-condition share (%): 7.51%NJ, Public bridges in inventory (thousands): 6.8k · Poor-condition share (%): 6.01%NM, Public bridges in inventory (thousands): 4k · Poor-condition share (%): 4.51%NY, Public bridges in inventory (thousands): 17.6k · Poor-condition share (%): 9.43%NC, Public bridges in inventory (thousands): 19.2k · Poor-condition share (%): 6.76%ND, Public bridges in inventory (thousands): 4.3k · Poor-condition share (%): 10.98%OH, Public bridges in inventory (thousands): 26.7k · Poor-condition share (%): 4.74%OK, Public bridges in inventory (thousands): 22.9k · Poor-condition share (%): 7.7%OR, Public bridges in inventory (thousands): 8.3k · Poor-condition share (%): 4.61%PA, Public bridges in inventory (thousands): 23.3k · Poor-condition share (%): 12.58%PR, Public bridges in inventory (thousands): 2.4k · Poor-condition share (%): 13.92%RI, Public bridges in inventory (thousands): 0.8k · Poor-condition share (%): 15.2%SC, Public bridges in inventory (thousands): 9.5k · Poor-condition share (%): 6.17%SD, Public bridges in inventory (thousands): 5.9k · Poor-condition share (%): 16.36%TN, Public bridges in inventory (thousands): 20.4k · Poor-condition share (%): 4.41%TX, Public bridges in inventory (thousands): 56.7k · Poor-condition share (%): 1.23%UT, Public bridges in inventory (thousands): 3.1k · Poor-condition share (%): 2.91%VT, Public bridges in inventory (thousands): 2.9k · Poor-condition share (%): 2.9%VI, Public bridges in inventory (thousands): 0k · Poor-condition share (%): 29.17%VA, Public bridges in inventory (thousands): 14.1k · Poor-condition share (%): 3.39%WA, Public bridges in inventory (thousands): 8.5k · Poor-condition share (%): 5.45%WV, Public bridges in inventory (thousands): 7.3k · Poor-condition share (%): 18.64%WY, Public bridges in inventory (thousands): 3.1k · Poor-condition share (%): 6.51%
Inventory size and Poor-condition share are different measures: Wisconsin has 14,446 bridges and a 6.5% Poor-condition share in the 2024 NBI, rank #30 of 54 jurisdictions ordered from the lowest share upward. The dashed comparisons mark the national average state rate and the midpoint of the plotted inventory range; neither is a live safety or closure threshold.

Wisconsin vs all states by public bridge inventory

Where this state's FHWA NBI public-highway bridge count sits among every state and territory on PlainBridges

14,446 19th of 54 higher than 35 of 54 states

States and territories, banded by public bridge inventory size

Each bar is a band; taller bars hold more states. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.

Source FHWA National Bridge Inventory · 2024

Read the rank neighborhood for Wisconsin

The highlighted point is Wisconsin: 14,446 bridges and 6.52% in Poor condition, rank #30 of 54 jurisdictions ordered from the lowest share upward. The five jurisdictions immediately above and below Wisconsin on that same Poor-share ordering:

  • South Carolina: 9,490 bridges · 6.17% Poor
  • Wyoming: 3,136 bridges · 6.51% Poor
  • Wisconsin: 14,446 bridges · 6.52% Poor
  • Hawaii: 1,195 bridges · 6.53% Poor
  • North Carolina: 19,210 bridges · 6.76% Poor

The full national sortable table lives on the rankings page.

Material families in Wisconsin

Exclusive FHWA material families across all 14,446 bridges in this state; continuous variants fold into the parent family. Orthogonal to the Poor-share scatter above.

Who maintains Wisconsin’s inventory

State agency holds 37.0% of the 14,446 public highway bridges filed under Wisconsin in the 2024 NBI, the agency-of-record split for this state, not a condition verdict.

When Wisconsin’s bridges were built

Pre-1950 construction accounts for 8.5% of the 14,446 bridges with a recorded original year in Wisconsin. Era bands are orthogonal to the Poor-share ranking above.

Condition Distribution

Wisconsin51%42.5%GoodFairPoor
Bridge inventory deck-condition mix - Wisconsin (FHWA NBI)

Counties (72)

Adams 41 Ashland 84 Barron 319 Bayfield 103 Brown 466 Buffalo 238 Burnett 67 Calumet 62 Chippewa 359 Clark 296 Columbia 183 Crawford 211 Dane 590 Dodge 212 Door 32 Douglas 135 Dunn 245 Eau Claire 236 Florence 20 Fond du Lac 251 Forest 53 Grant 383 Green 244 Green Lake 48 Iowa 209 Iron 48 Jackson 218 Jefferson 182 Juneau 172 Kenosha 109 Kewaunee 93 La Crosse 249 Lafayette 217 Langlade 78 Lincoln 157 Manitowoc 269 Marathon 530 Marinette 135 Marquette 81 Menominee 25 Milwaukee 893 Monroe 374 Oconto 149 Oneida 61 Outagamie 290 Ozaukee 105 Pepin 57 Pierce 248 Polk 73 Portage 182 Price 104 Racine 133 Richland 298 Rock 304 Rusk 151 Sauk 271 Sawyer 97 Shawano 160 Sheboygan 240 St. Croix 298 Taylor 176 Trempealeau 260 Vernon 333 Vilas 29 Walworth 206 Washburn 49 Washington 162 Waukesha 369 Waupaca 169 Waushara 53 Winnebago 263 Wood 239

Wisconsin vs nearby ranks

Adjacent states by Poor-condition share (lower share = better)

States are ranked by the share of bridges whose lowest applicable component rating is 4 or below. This describes recorded condition; it does not measure funding effectiveness or live crossing safety. States here sit immediately above and below Wisconsin on the same metric.

SC

South Carolina

6.17% top marginal rate
Structure
Progressive
Burden @ $100K
$9,490

WY

Wyoming

6.51% top marginal rate
Structure
Progressive
Burden @ $100K
$3,136
Selected

WI

Wisconsin

6.52% top marginal rate
Structure
Progressive
Burden @ $100K
$14,446

HI

Hawaii

6.53% top marginal rate
Structure
Progressive
Burden @ $100K
$1,195

NC

North Carolina

6.76% top marginal rate
Structure
Progressive
Burden @ $100K
$19,210

Bridges Needing Most Attention in Wisconsin

Six lowest-condition bridges in Wisconsin, ranked by the portal's composite display score. Inspection intervals are risk-based under current NBIS rules.

LRD CASBERG COULEE

Poor

Over: LONG COULEE CREEK

0.2M E JCT CTH V, La Crosse, WI

Built 1984 Load: 0.0 t ADT: 265

LRD IRR (ENSINGER

Poor

Over: BRUNSWEILER RIVER

0.7M E JCT STH 13, Ashland, WI

Built 1920 Load: 0.0 t ADT: 20

LRD N 50TH ST (DEA

Poor

Over: MENOMONEE RIVER

0.2M S JCT STATE ST, Milwaukee, WI

Built 1976 Load: 0.0 t ADT: 1

LRD PEDESTRIAN (WO

Poor

Over: MILWAUKEE RIVER

0.5M E JCT USH 45, Washington, WI

Built 1891 Load: 0.0 t

LRD ACCESS RD

Poor

Over: MENASHA CHANNEL

ACCESS TO PARKING LOT BY, Winnebago, WI

Built 1960 Load: 1.6 t ADT: 20

LRD MARKET RD

Poor

Over: BEAR CREEK

1.2M N JCT STH 76, Outagamie, WI

Built 1958 Load: 1.6 t ADT: 1,175

All Bridges in Wisconsin

LRD FURNACE HILL R

Fair

Over: BR OTTER CREEK

0.3M N JCT CTH G, Lafayette, WI

Built 1968 Load: 34.0 t ADT: 47

CTH G

Fair

Over: MUD BRANCH

3.4M W JCT CTH N, Lafayette, WI

Built 1969 Load: 34.0 t ADT: 490

LRD PARKWAY LANE

Fair

Over: FRANCIS CREEK

0.7M E JCT CTH R, Manitowoc, WI

Built 1969 Load: 34.0 t ADT: 205

CTH F

Fair

Over: BR LITTLE EAU PLEINE R

0.6M S JCT CTH C, Marathon, WI

Built 1968 Load: 34.0 t ADT: 376

LRD HOWLING PINES

Fair

Over: BIG SANDY CREEK

1.0M N JCT STH 52, Marathon, WI

Built 1929 Load: 34.0 t ADT: 50

LRD N 25TH STREET

Fair

Over: LRD GREVES STREET

0.2M S JCT USH 18, Milwaukee, WI

Built 1979 Load: 34.0 t ADT: 8,800

LRD N 35TH ST

Fair

Over: LINCOLN CREEK

0.5M N JCT STH 190, Milwaukee, WI

Built 1936 Load: 34.0 t ADT: 14,900

LRD E KILBOURN AVE

Fair

Over: MILWAUKEE RIVER

0.2M W JCT USH 18, Milwaukee, WI

Built 1929 Load: 34.0 t ADT: 11,500

LRD LAMB AVE

Fair

Over: LITTLE LA CROSSE RIVER

0.3M E JCT STH 27, Monroe, WI

Built 1975 Load: 34.0 t ADT: 35

LRD INDEPENDENCE R

Fair

Over: SILVER CREEK

0.3M N JCT CTH A, Monroe, WI

Built 1936 Load: 34.0 t ADT: 10

LRD GROTTO AVE (DE

Fair

Over: ALLEN CREEK

1.3M E JCT CTH PP, Monroe, WI

Built 1983 Load: 34.0 t ADT: 10

CTH BC

Fair

Over: BIG CREEK

2.2M N JCT STH 16, Monroe, WI

Built 1978 Load: 34.0 t ADT: 501

CTH Z

Fair

Over: POE CREEK

0.4M E JCT STH 131, Monroe, WI

Built 1977 Load: 34.0 t ADT: 180

LRD RIVERSIDE RD

Fair

Over: N BR OCONTO RIVER

0.1M W JCT CTH F, Oconto, WI

Built 1913 Load: 34.0 t ADT: 40

LRD SANDALWOOD RD

Fair

Over: PENSAUKEE RIVER

0.7M N JCT CTH D, Oconto, WI

Built 1974 Load: 34.0 t ADT: 85

LRD SULLIVAN SPRIN

Fair

Over: N BR OCONTO RIVER

2.8M S JCT CTH F, Oconto, WI

Built 1967 Load: 34.0 t ADT: 35

LRD OLDE ONEIDA ST

Fair

Over: NAVIGATION CANAL

0.4M N JCT USH 10, Outagamie, WI

Built 1959 Load: 34.0 t ADT: 3,684

CTH N

Fair

Over: LITTLE PLUM CREEK

2.3M W JCT CTH D, Pepin, WI

Built 1965 Load: 34.0 t ADT: 862

LRD W CHURCH RD

Fair

Over: APPLE RIVER

0.1M N JCT STH 65, Polk, WI

Built 1975 Load: 34.0 t ADT: 700

LRD TAFT AVE

Fair

Over: BUENA VISTA CREEK

3.6M N JCT CTH W, Portage, WI

Built 1981 Load: 34.0 t ADT: 212

LRD MAPLE VALLEY R

Fair

Over: KNAPP CREEK

0.2M E JCT CTH F, Richland, WI

Built 1977 Load: 34.0 t ADT: 47

CTH T

Fair

Over: KINNICKINNIC RIVER

1.7M S JCT CTH G, St. Croix, WI

Built 1974 Load: 34.0 t ADT: 2,000

LRD NARROWS VALLEY

Fair

Over: NARROWS CREEK

0.7M N JCT STH 154, Sauk, WI

Built 1986 Load: 34.0 t ADT: 156

CTH F

Fair

Over: BIG CREEK

1.5M E JCT STH 58, Sauk, WI

Built 1980 Load: 34.0 t ADT: 209

LRD FRANKLIN RD

Fair

Over: SHEBOYGAN RIVER

0.3M N JCT CTH FF, Sheboygan, WI

Built 1976 Load: 34.0 t ADT: 58

CTH O

Fair

Over: BLACK RIVER

1.1M E JCT CTH Q, Taylor, WI

Built 1971 Load: 34.0 t ADT: 3,500

LRD HENRY"S LANE

Fair

Over: BAD AXE RIVER

2.4M E JCT STH 35, Vernon, WI

Built 1975 Load: 34.0 t ADT: 94

LRD HAYDEN RD

Fair

Over: BR COOLEY CREEK

3.6M E JCT STH 82, Vernon, WI

Built 1928 Load: 34.0 t ADT: 94

LRD SHERMAN RD

Fair

Over: BR CEDAR CREEK

2.4M W JCT CTH G, Washington, WI

Built 1940 Load: 34.0 t ADT: 3,100

LRD LISBON RD

Fair

Over: BUTLER DITCH

0.6M S JCT CTH K, Waukesha, WI

Built 1924 Load: 34.0 t ADT: 2,900

FR106

Fair

Over: MONDEAUX RIVER

1.9 M. E. JCT CTH E, Taylor, WI

Built 1985 Load: 34.7 t ADT: 50

STH 4TH STREET

Fair

Over: WISCONSIN RIVER 42

0.2M N JCT STH 86 TO E, Lincoln, WI

Built 2011 Load: 34.7 t ADT: 15,223

CTH KK

Fair

Over: BR MILL CREEK

1.9M W JCT USH 14, Richland, WI

Built 1978 Load: 34.7 t ADT: 174

USH 10 EB/STH 441

Fair

Over: LITTLE LAKE BUTTE DES MO

LOCATION UNKNOWN PLEASE, Winnebago, WI

Built 2016 Load: 35.0 t ADT: 28,000

STH 54

Fair

Over: DUCK CREEK

0.5M E JCT CTH J, Brown, WI

Built 2012 Load: 35.3 t ADT: 10,700

CTH L

Fair

Over: BIG RIB RIVER

1.5M N JCT CTH H, Marathon, WI

Built 2011 Load: 35.3 t ADT: 641

LRD GRANGE AVE WB

Fair

Over: IH 41/94

1.3 M W JCT STH 38 (HOWEL, Milwaukee, WI

Built 2009 Load: 35.3 t ADT: 2,400

LRD E MAIN ST

Fair

Over: BUTTERNUT CREEK

0.2M S JCT CTH F, Ashland, WI

Built 1976 Load: 35.6 t ADT: 1,569

LRD GEORGE BAY ROA

Fair

Over: E FK CHIPPEWA RIVER

2.8M S JCT CTH D, Ashland, WI

Built 1990 Load: 35.6 t ADT: 56

CTH W

Fair

Over: RED CEDAR RIVER

1.0M N JCT USH 8, Barron, WI

Built 1978 Load: 35.6 t ADT: 3,832

USH 53 NB

Fair

Over: RED CEDAR RIVER

3.8M N JCT USH 8 TO E, Barron, WI

Built 1977 Load: 35.6 t ADT: 6,400

USH 53 SB

Fair

Over: STH 48-KNAPP ST

7.2M S JCT CTH V, Barron, WI

Built 1977 Load: 35.6 t ADT: 5,150

CTH V BRACKLIN S

Fair

Over: BEAR CREEK

0.2M W JCT USH 53, Barron, WI

Built 1982 Load: 35.6 t ADT: 2,200

CTH M

Fair

Over: NAMEKAGON RIVER

3.3M E JCT USH 63, Bayfield, WI

Built 1985 Load: 35.6 t ADT: 2,399

LRD AIRPORT RD

Fair

Over: E FK IRON RIVER

4.8M S JCT STH 13, Bayfield, WI

Built 2000 Load: 35.6 t ADT: 108

STH 172 EB

Fair

Over: CTH H BROADWAY ST

1.4M E JCT USH 41, Brown, WI

Built 1974 Load: 35.6 t ADT: 42,350

IH RAMP STH 172 EB

Fair

Over: IH 43

1.8M E JCT CTH GV, Brown, WI

Built 1981 Load: 35.6 t ADT: 19,900

USH 141-STH 29

Fair

Over: IH 43

2.6M N JCT STH 29 TO E, Brown, WI

Built 1980 Load: 35.6 t ADT: 6,700

LRD GREENBRIER RD

Fair

Over: IH 43

0.6M E JCT CTH JJ, Brown, WI

Built 1981 Load: 35.6 t ADT: 3,400

LRD MILITARY AVE

Fair

Over: IH 43

0.3M N JCT USH 141, Brown, WI

Built 1978 Load: 35.6 t ADT: 1,700

Showing 4,051-4,100 of 14,446 bridges

Related

All states → | National rankings → | Understanding conditions → | Retired SD term explained →
Data sourced from the FHWA National Bridge Inventory (NBI), latest released cycle. See our methodology for details. Retrieved and formatted by PlainBridges.

Disclaimer: This information is provided for informational purposes only and does not constitute professional advice. Data is sourced from the FHWA National Bridge Inventory (NBI). Poor condition is an inspection-record category, not a closure or unsafe-to-cross designation. Consult the bridge owner for current status.

Understanding Bridge Conditions

How FHWA rates bridge condition on a 0-9 scale.

Check Your Daily Bridges

How to look up bridge condition data for bridges on your route.

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

What to do with this

Use Wisconsin's inventory picture to drill to a county or a specific span.

  • Browse counties in Wisconsin and open the highest-Poor shares first. County list
  • See where this state sits among peers on Poor-condition share. State rankings
  • Compare this state with another jurisdiction on the same measures. State compare

NBI condition ratings are inventory snapshots, not live crossing-safety verdicts.

Every figure on PlainBridges is rendered directly from federal source data, no number is typed in by an editor. Wisconsin Good/Fair/Poor shares and county rollups on this page are computed from the same NBI extract as the national boards; no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of 2024 NBI release. NBI condition categories reflect the latest reported inventory record, not a live safety, closure, or travel decision.