State profile · Near national median SD

Wisconsin bridge safety

Condition ratings, load ratings, and structural-deficiency data for every public highway bridge in Wisconsin — drawn straight from the FHWA National Bridge Inventory.

14,851
Public bridges
41.3%
Good condition
6.1%
Poor condition
6.1%
Structurally deficient

Total Bridges

14,851

Public highway bridges in Wisconsin

Good Condition

41.3%

6,130 bridges rated 7-9

-8.7pp vs 50% benchmark

Poor Condition

6.1%

911 bridges rated 0-4

Structurally Deficient

6.1%

911 bridges flagged for repair priority

-0.9pp vs national avg 7.0%

Wisconsin vs national bridge condition

Wisconsin — Good condition share 41.3%
National avg

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

Wisconsin — Structurally deficient share 20.4%
National avg

Lower is better. Bar maxes at 30% (worst-state ceiling). National average sits at 7.0%.

Condition Distribution

Bridge inventory deck-condition mix — Wisconsin (FHWA NBI)

Wisconsin41.2766817049357%33.10214800350145%GoodFairPoorStructurally Deficient
Bridge inventory deck-condition mix — Wisconsin (FHWA NBI)

Counties (72)

Adams 43 Ashland 92 Barron 321 Bayfield 103 Brown 478 Buffalo 239 Burnett 68 Calumet 63 Chippewa 366 Clark 297 Columbia 191 Crawford 212 Dane 624 Dodge 219 Door 32 Douglas 143 Dunn 252 Eau Claire 242 Florence 20 Fond du Lac 256 Forest 54 Grant 385 Green 249 Green Lake 50 Iowa 212 Iron 52 Jackson 220 Jefferson 186 Juneau 174 Kenosha 121 Kewaunee 93 La Crosse 250 Lafayette 217 Langlade 78 Lincoln 158 Manitowoc 272 Marathon 534 Marinette 136 Marquette 85 Menominee 25 Milwaukee 1005 Monroe 385 Oconto 149 Oneida 64 Outagamie 300 Ozaukee 107 Pepin 57 Pierce 248 Polk 77 Portage 192 Price 104 Racine 143 Richland 298 Rock 325 Rusk 152 Sauk 277 Sawyer 98 Shawano 162 Sheboygan 249 St. Croix 308 Taylor 176 Trempealeau 260 Vernon 333 Vilas 29 Walworth 209 Washburn 54 Washington 166 Waukesha 380 Waupaca 172 Waushara 54 Winnebago 264 Wood 242

Wisconsin vs nearby ranks

Adjacent states on the structurally deficient leaderboard (lower share = better)

States are ranked by share of bridges flagged structurally deficient — the FHWA classification for any span where deck, superstructure, or substructure carries a condition rating of 4 or below. Lower percentages indicate stronger maintenance funding and inspection follow-through. States here sit immediately above and below Wisconsin on the same metric.

28

Mississippi

5.92% top marginal rate
Structure
Progressive
Burden @ $100K
$16,823

45

South Carolina

6.10% top marginal rate
Structure
Progressive
Burden @ $100K
$5,396
Selected

55

Wisconsin

6.13% top marginal rate
Structure
Progressive
Burden @ $100K
$14,851

37

North Carolina

6.16% top marginal rate
Structure
Progressive
Burden @ $100K
$18,901

15

Hawaii

6.47% top marginal rate
Structure
Progressive
Burden @ $100K
$1,206

Bridges Needing Most Attention in Wisconsin

Six lowest-condition bridges in Wisconsin, ranked by composite NBI rating. Each is inspected at least every 24 months.

LRD MARKET RD

Poor

Over: BEAR CREEK

1.2M N JCT STH 76, Outagamie, WI

Built 1958 Load: 1.6 t ADT: 1,175

LRD WOODFORD DR

Poor

Over: RAILS TO TRAILS TRAIL

0.3M E JCT USH 45, Washington, WI

Built 1910 Load: 1.6 t ADT: 47

LRD ACCESS RD

Poor

Over: MENASHA CHANNEL

ACCESS TO PARKING LOT BY, Winnebago, WI

Built 1960 Load: 1.6 t ADT: 20

CTH A

Structurally Deficient

Over: UNION PACIFIC RR

1.0M W JCT STH 73, Columbia, WI

Built 1910 Load: 3.2 t ADT: 197

LRD OLD 64 (DEAD E

Structurally Deficient

Over: EVERGREEN CREEK

0.1M N JCT STH 64, Langlade, WI

Built 1916 Load: 3.2 t ADT: 6

LRD CORNELL LANE (

Structurally Deficient

Over: BR COON CREEK

0.1M E JCT USH 14, Vernon, WI

Built 1985 Load: 3.2 t ADT: 10

All Bridges in Wisconsin

CTH G

Good

Over: S FK BUFFALO RIVER

0.2M N JCT CTH B, Jackson, WI

Built 2020 Load: 39.5 t ADT: 130

CTH Y

Good

Over: SPRING BROOK

0.5M W JCT USH 45, Langlade, WI

Built 2020 Load: 39.5 t ADT: 1,300

CTH U / S WATER ST

Good

Over: MOORE CREEK

0.2M E JCT STH 71, Monroe, WI

Built 2023 Load: 39.5 t ADT: 114

LRD EAST FRONATAGE

Good

Over: LITTLE SUAMICO RIVER

TOWN OF LITTLE SUAMICO, Oconto, WI

Built 1999 Load: 39.5 t ADT: 582

CTH J

Good

Over: LITTLE SUAMICO RIVER

0.8M S JCT CTH S, Oconto, WI

Built 2009 Load: 39.5 t ADT: 750

LRD GROSSE RD

Good

Over: LITTLE SUAMICO RIVER

0.4M S JCT CTH J, Oconto, WI

Built 2019 Load: 39.5 t ADT: 70

LRD OLD HWY 47

Good

Over: TOAD CREEK

.1M N JCT STH 47, Outagamie, WI

Built 2021 Load: 39.5 t ADT: 99

STH 125-W COLLEGE

Good

Over: MUD CREEK

0.3M E USH 41, Outagamie, WI

Built 2023 Load: 39.5 t ADT: 30,100

LRD STONEY HILL RO

Good

Over: FLUME CREEK

0.7 MILES WEST OF CTH A, Portage, WI

Built 2017 Load: 39.5 t ADT: 102

IH 39NB/90 WB

Good

Over: CPRR / SPRING BROOK

1.9M W ILL STATE LINE, Rock, WI

Built 2020 Load: 39.5 t ADT: 29,550

CTH V

Good

Over: ONION RIVER

0.6M E JCT STH 57, Sheboygan, WI

Built 2022 Load: 39.5 t ADT: 2,075

LRD TAYLOR ROAD

Good

Over: BR COOLEY CREEK

1.4 MI SOUTH OF STH 82, Vernon, WI

Built 2009 Load: 39.5 t ADT: 146

LRD PETERSON LANE

Good

Over: COON CREEK

0.1M S JCT STH 162, Vernon, WI

Built 2015 Load: 39.5 t ADT: 10

LRD OLD LINE RD

Good

Over: BR N FK BAD AXE RIVER

1.0M S JCT USH 14, Vernon, WI

Built 2023 Load: 39.5 t ADT: 110

LRD MOHAWK RD

Good

Over: NIPPERSINK CREEK

1.7M S JCT CTH B, Walworth, WI

Built 2011 Load: 39.5 t ADT: 92

LRD MOHAWK RD

Good

Over: NIPPERSINK CREEK

2.2M S JCT CTH B, Walworth, WI

Built 2010 Load: 39.5 t ADT: 92

USH 53 NB

Good

Over: POTATO CREEK

2.69 MI N CTH A, Washburn, WI

Built 2022 Load: 39.5 t ADT: 8,500

CTH Y (LANNON RD)

Good

Over: FOX RIVER

0.1M N JCT CTH VV, Waukesha, WI

Built 2013 Load: 39.5 t ADT: 3,800

LRD PINE RIVER ST

Good

Over: WILLOW CREEK

0.4M N JCT STH 21, Waushara, WI

Built 2018 Load: 39.5 t ADT: 2,000

IH 41 NB

Good

Over: LAKE BUTTE DES MORTS

1.3M N JCT STH 21 TO E, Winnebago, WI

Built 2013 Load: 39.5 t ADT: 39,050

CTH N

Good

Over: TRIB. TO YELLOW RIVER

2.9M E JCT STH 80, Wood, WI

Built 2019 Load: 39.5 t ADT: 620

LRD 155TH AVENUE

Good

Over: LITTLE DRYWOOD CREEK

0.9 M W JCT STH 27, Chippewa, WI

Built 2023 Load: 39.9 t ADT: 130

LRD DUTCH RIDGE RO

Good

Over: LITTLE KICKAPOO CREEK

5.4 M E JCT RHIEN HOLLOW, Crawford, WI

Built 2016 Load: 39.9 t ADT: 100

CTH M

Good

Over: WSOR RR

2.3M E JCT CTH D, Dane, WI

Built 2012 Load: 39.9 t ADT: 5,300

CTH F

Good

Over: RYAN CREEK

1.0M N JCT CTH J, Dane, WI

Built 2015 Load: 39.9 t ADT: 360

LRD ELDER LANE NB

Good

Over: MAUNESHA RIVER

0.6M W JCT USH 151, Dane, WI

Built 2016 Load: 39.9 t ADT: 100

LRD EAGLE POINT RO

Good

Over: BNSF RAILWAY COMPANY NB

1.3 MI W. JCT USH 61, Grant, WI

Built 2016 Load: 39.9 t ADT: 240

CTH G

Good

Over: PECATONICA RIVER

0.2M N JCT CTH E, Iowa, WI

Built 2012 Load: 39.9 t ADT: 721

CTH KR EB

Good

Over: UPRR

3.4 MI EAST OF IH 41/94, Kenosha, WI

Built 2022 Load: 39.9 t ADT: 7,100

LRD STETTIN DR

Good

Over: ARTUS CREEK

1.0M E JCT STH 107, Marathon, WI

Built 2023 Load: 39.9 t ADT: 310

STH 24 EB - JANESV

Good

Over: NW BR WHITNALL PARK CREE

0.1 MI W JCT STH 100, Milwaukee, WI

Built 2014 Load: 39.9 t ADT: 6,350

STH 24 WB - JANESV

Good

Over: NW BR WHITNALL PARK CREE

0.1M W JCT STH 100, Milwaukee, WI

Built 2014 Load: 39.9 t ADT: 6,350

SOUTH 8TH AVE

Good

Over: TARR CREEK

So 8 Ave over Tarr Creek, Monroe, WI

Built 1996 Load: 39.9 t ADT: 1,010

CTH F

Good

Over: KINNICKINNIC RIVER

AT KINNICKINNIC STATE PA, Pierce, WI

Built 2012 Load: 39.9 t ADT: 2,987

LRD E MAIN ST

Good

Over: ALLEN CR

0.1M W JCT USH 14, Rock, WI

Built 2011 Load: 39.9 t ADT: 6,967

IH 39 NB/ IH 90 WB

Good

Over: WSOR RAILROAD

4.6M W JCT STH 26 TO N, Rock, WI

Built 2020 Load: 39.9 t ADT: 26,750

CTH M

Good

Over: SKINNER CREEK

5.3 MILES N JCT USH 8, Rusk, WI

Built 2022 Load: 39.9 t ADT: 340

USH 53-MAIN ST

Good

Over: BEAVER CREEK

0.5M N JCT STH 54 TO E, Trempealeau, WI

Built 2011 Load: 39.9 t ADT: 8,400

CTH D

Good

Over: BEAR CREEK

0.09 M S JCT STH 82 (AT B, Vernon, WI

Built 2014 Load: 39.9 t ADT: 542

STH 60

Good

Over: CEDAR CR

0.2 MI W JCT USH 45, Washington, WI

Built 2014 Load: 39.9 t ADT: 11,800

STH 83 NB

Good

Over: GLACIAL DRUMLIN TRAIL

0.2 MI S JCT USH 18, Waukesha, WI

Built 2014 Load: 39.9 t ADT: 8,750

LRD WOODS RD

Good

Over: MUSKEGO CREEK

0.9M E JCT CTH Y, Waukesha, WI

Built 2015 Load: 39.9 t ADT: 6,300

IH 41 SB

Good

Over: LAKE BUTTE DES MORTS

1.2M S JCT STH 110 TO N, Winnebago, WI

Built 2012 Load: 39.9 t ADT: 39,050

LRD BLACK WOLF AVE

Good

Over: WILLOW HARBOR CREEK

AT WILLOW HARBOR CREEK, Winnebago, WI

Built 2014 Load: 39.9 t ADT: 180

CTH H

Good

Over: E BR YELLOW RIVER

1.1M W JCT CTH B, Wood, WI

Built 2008 Load: 39.9 t ADT: 3,500

LRD GLORY RD

Good

Over: ASHWAUBENON CREEK

0.3M E JCT USH 41, Brown, WI

Built 2010 Load: 40.2 t ADT: 5,939

CTH R

Good

Over: DEVILS RIVER TRAIL

0.5 MI E OF DEPERE RD, Brown, WI

Built 2020 Load: 40.2 t ADT: 3,100

LRD HANSON BLUFF R

Good

Over: LEE VALLEY CREEK

0.1 M SW JCT CTH KK, Buffalo, WI

Built 2022 Load: 40.2 t ADT: 48

CTH J

Good

Over: TIFFANY CREEK

0.2M E JCT CTH JJ, Buffalo, WI

Built 2022 Load: 40.2 t ADT: 87

LRD BIEDERMAN HILL

Good

Over: GRAN GRAE CREEK

0.1 MI E JCT GRAN GRAE RD, Crawford, WI

Built 2018 Load: 40.2 t ADT: 100

Showing 12,401-12,450 of 14,851 bridges

Related

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

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). A "structurally deficient" rating is a repair-priority signal, not a closure or unsafe-to-cross designation. Consult a qualified civil engineer before making decisions based on this data.

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.