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

CTH B

Fair

Over: LITTLE PESHTIGO RIVER

2.1M E JCT USH 141, Marinette, WI

Built 1994 Load: 37.3 t ADT: 1,407

STH 22-MAIN ST

Fair

Over: MONTELLO RIVER

0.5M N JCT CTH K, Marquette, WI

Built 1997 Load: 37.3 t ADT: 5,300

CTH N

Fair

Over: MECAN RIVER

1.0M N JCT STH 23, Marquette, WI

Built 2000 Load: 37.3 t ADT: 100

CTH BB E RAWSON A

Fair

Over: UP RR

1.4M W JCT STH 32, Milwaukee, WI

Built 1955 Load: 37.3 t ADT: 8,550

CTH BB E RAWSON A

Fair

Over: UP RR

1.1M E JCT STH 38, Milwaukee, WI

Built 1955 Load: 37.3 t ADT: 8,550

STH 32 NB-PROSPECT

Fair

Over: ABANDONED RR

1.6M N JCT USH 18 TO W, Milwaukee, WI

Built 1957 Load: 37.3 t ADT: 9,593

STH 175 NB-STADIUM

Fair

Over: LRD W STATE ST

0.8M N JCT IH 94 TO E, Milwaukee, WI

Built 1960 Load: 37.3 t ADT: 35,500

IH 41 NB/894 WB/US

Fair

Over: LRD W COLD SPRING RD

0.3M W JCT USH 45 TO S, Milwaukee, WI

Built 1964 Load: 37.3 t ADT: 65,000

IH 94 EB-IH 43 SB

Fair

Over: LAND

0.3M S JCT IH 794 TO E, Milwaukee, WI

Built 1968 Load: 37.3 t ADT: 78,000

IH 41/USH 45/STH10

Fair

Over: STH 145

0.2 MI N JCT CTH PP, Milwaukee, WI

Built 2000 Load: 37.3 t ADT: 51,000

IH 794 WB-LAKE INT

Fair

Over: LAND - PARKING LOT

1.0 MI E JCT IH-43, Milwaukee, WI

Built 1975 Load: 37.3 t ADT: 36,600

IH 794 WB-LAKE INT

Fair

Over: IH RAMP IH 794 EB-LINC

2.4M W JCT CARFERRY DR, Milwaukee, WI

Built 1974 Load: 37.3 t ADT: 39,850

IH RAMP IH 794WB

Fair

Over: IH RAMP JACKSON ST-IH 7

1.0 MI E JCT IH 43, Milwaukee, WI

Built 1975 Load: 37.3 t ADT: 7,800

STH 100 SB-BROWN D

Fair

Over: CNW RR

2.2M S JCT STH 181, Milwaukee, WI

Built 1976 Load: 37.3 t ADT: 9,300

LRD N 68TH ST

Fair

Over: MENOMONEE RIVER

0.5M N JCT USH 18, Milwaukee, WI

Built 1937 Load: 37.3 t ADT: 8,700

STH 32-N CHICAGO A

Fair

Over: OAK CREEK

3.3M N JCT STH 100, Milwaukee, WI

Built 1982 Load: 37.3 t ADT: 11,200

CTH Y/E LAYTON AVE

Fair

Over: STH 794

1.5 MI E JCT STH 38, Milwaukee, WI

Built 1984 Load: 37.3 t ADT: 10,000

CTH Y/LAYTON AVE (

Fair

Over: STH CNW RR - STH 794

1.6 MI W JCT STH 32, Milwaukee, WI

Built 1984 Load: 37.3 t ADT: 10,000

LRD S NICHOLSON RD

Fair

Over: ROOT RIVER

1.9M S JCT STH 100, Milwaukee, WI

Built 1983 Load: 37.3 t ADT: 1,600

LRD DREXEL AVE

Fair

Over: OAK CREEK

0.9M E JCT STH 38, Milwaukee, WI

Built 1986 Load: 37.3 t ADT: 8,200

LRD E BELLEVIEW PL

Fair

Over: OAK LEAF BIKE TRAIL

0.7M W JCT STH 32, Milwaukee, WI

Built 1995 Load: 37.3 t ADT: 621

LRD E LAFAYETTE PL

Fair

Over: BIKE TRAIL

0.1M E JCT STH 32, Milwaukee, WI

Built 1990 Load: 37.3 t ADT: 6,800

LRD E NORTH AVE

Fair

Over: MILWAUKEE RIVER AND BEER

0.3M W JCT STH 32, Milwaukee, WI

Built 1991 Load: 37.3 t ADT: 16,300

IH 43 NB-N-S FREEW

Fair

Over: LRD BENDER RD

3.0M N JCT STH 190 TO E, Milwaukee, WI

Built 1992 Load: 37.3 t ADT: 46,350

IH 43 SB-N-S FREEW

Fair

Over: LRD BENDER RD

3.4M S JCT STH 100 TO S, Milwaukee, WI

Built 1992 Load: 37.3 t ADT: 46,350

CTH E SILVER SPRI

Fair

Over: MILWAUKEE RIVER

0.1M W JCT IH 43, Milwaukee, WI

Built 1991 Load: 37.3 t ADT: 15,600

IH RAMP I 43 NB-SI

Fair

Over: IH RAMP TO IH 43 NB

1.97 MI N JCT STH 190, Milwaukee, WI

Built 1992 Load: 37.3 t ADT: 4,000

USH 18 WB-STATE ST

Fair

Over: MILWAUKEE RIVER

0.4M W JCT STH 32 TO N, Milwaukee, WI

Built 1924 Load: 37.3 t ADT: 5,123

IH RAMP WISC AVE -

Fair

Over: IH RAMP IH 43 SB - IH 94

MARQUETTE INTERCHANGE, Milwaukee, WI

Built 2008 Load: 37.3 t ADT: 38,000

STH 173

Fair

Over: MILL CREEK

1.5M N JCT STH 21, Monroe, WI

Built 1956 Load: 37.3 t ADT: 1,800

IH RAMP IH 90 EB-I

Fair

Over: IH 90 WB

AT JCT IH 90-94, Monroe, WI

Built 1963 Load: 37.3 t ADT: 2,100

STH 131

Fair

Over: KICKAPOO RIVER

1.6M N JCT CTH T, Monroe, WI

Built 1978 Load: 37.3 t ADT: 2,000

USH 12-STH 16

Fair

Over: CP RR

2.2M E JCT CTH CA, Monroe, WI

Built 1978 Load: 37.3 t ADT: 2,600

LRD NIAGARA AVE

Fair

Over: COOK CREEK

0.4M W JCT STH 131, Monroe, WI

Built 1981 Load: 37.3 t ADT: 94

USH 12

Fair

Over: MILL CREEK

0.5M E JCT CTH O (E), Monroe, WI

Built 1988 Load: 37.3 t ADT: 3,200

LRD EAST AVE

Fair

Over: LACROSSE RIVER

0.2M N JCT STH 16, Monroe, WI

Built 1989 Load: 37.3 t ADT: 5,196

STH 71

Fair

Over: FARMERS VALLEY CREEK

2.2M E JCT CTH AA, Monroe, WI

Built 1991 Load: 37.3 t ADT: 1,600

LRD ICARUS RD

Fair

Over: LA CROSSE RIVER

0.7M S JCT STH 16, Monroe, WI

Built 1994 Load: 37.3 t ADT: 110

LRD MASCOT AVE

Fair

Over: BR LIT LA CROSSE RIVER

0.3M E JCT STH 27, Monroe, WI

Built 1997 Load: 37.3 t ADT: 284

LRD EAST AVE

Fair

Over: FARMERS VALLEY CREEK

0.1M N JCT STH 16, Monroe, WI

Built 1999 Load: 37.3 t ADT: 1,300

STH 33

Fair

Over: TRIBUTARY TO BRUSH CREEK

7.0M E JCT CTH D, Monroe, WI

Built 2001 Load: 37.3 t ADT: 1,800

CTH X

Fair

Over: BR LITTLE LACROSSE RIVER

0.2 M WEST JCT STH 21, Monroe, WI

Built 1997 Load: 37.3 t ADT: 1

CTH BB

Fair

Over: OCONTO RIVER

2.4M S JCT STH 22, Oconto, WI

Built 1973 Load: 37.3 t ADT: 540

LRD OAK ORCHARD RO

Fair

Over: USH 41 - USH 141

2.0M E JCT SANDELWOOD RD, Oconto, WI

Built 2001 Load: 37.3 t ADT: 800

STH 70

Fair

Over: TOMAHAWK RIVER

3.7M E JCT CTH F, Oneida, WI

Built 1966 Load: 37.3 t ADT: 5,400

STH 47

Fair

Over: MINOCQUA LAKE

6.2M N JCT CTH D TO W, Oneida, WI

Built 1988 Load: 37.3 t ADT: 5,700

USH 51

Fair

Over: MINOCQUA LAKE

6.1M N JCT CTH D, Oneida, WI

Built 1993 Load: 37.3 t ADT: 14,700

LRD SWAMP LAKE ROA

Fair

Over: TOMAHAWK RIVER

0.4M W JCT USH 51, Oneida, WI

Built 1990 Load: 37.3 t ADT: 417

IH 41 SB

Fair

Over: LRD WRIGHTSTOWN RD

1.9M S JCT CTH U, Outagamie, WI

Built 2000 Load: 37.3 t ADT: 26,700

IH 41 NB

Fair

Over: LRD WRIGHTSTOWN RD NB

1.3M N JCT CTH JJ, Outagamie, WI

Built 2000 Load: 37.3 t ADT: 26,700

Showing 4,701-4,750 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.