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 A

Good

Over: FLYNN CREEK

2.8M W JCT CTH PB, Dane, WI

Built 2018 Load: 36.3 t ADT: 850

LRD VALLEY RD

Good

Over: SUGAR RIVER

1.0M W JCT STH 69, Dane, WI

Built 2023 Load: 36.3 t ADT: 100

LRD WINDSOR RD

Good

Over: YAHARA RIVER

0.5M W JCT CTH CV, Dane, WI

Built 2023 Load: 36.3 t ADT: 1,875

LRD BOBOLINK ROAD

Good

Over: CPRS RAILROAD

1.0 M E JCT CTH G, Dodge, WI

Built 2021 Load: 36.3 t ADT: 100

LRD E COPPER MINE

Good

Over: OUNCE RIVER

4.3M E JCT CTH G, Douglas, WI

Built 2010 Load: 36.3 t ADT: 102

LRD W MAIL RD

Good

Over: MOOSE RIVER

2.5M S JCT CTH M, Douglas, WI

Built 2011 Load: 36.3 t ADT: 40

LRD DIETZ RD

Good

Over: BLACK RIVER

0.2M S. FOXBORO CHAFFEY R, Douglas, WI

Built 2012 Load: 36.3 t ADT: 101

CTH W

Good

Over: POPPLE CREEK

0.1M N JCT CTH S, Dunn, WI

Built 2021 Load: 36.3 t ADT: 330

CTH D

Good

Over: KNIGHTS CR

ON CTH D, Dunn, WI

Built 2013 Load: 36.3 t ADT: 159

CTH Q

Good

Over: WILSON CREEK

3M W OF KNAPP, Dunn, WI

Built 2022 Load: 36.3 t ADT: 210

STH 79

Good

Over: CLACK CREEK

2.6M N JCT USH 12, Dunn, WI

Built 2023 Load: 36.3 t ADT: 1,917

CTH G

Good

Over: TAINTER LAKE

0.8M N JCT CTH B, Dunn, WI

Built 2012 Load: 36.3 t ADT: 990

LRD YOUTH CAMP ROA

Good

Over: BR. MILWAUKEE RIVER

0.1M N CTH S, Fond du Lac, WI

Built 2009 Load: 36.3 t ADT: 628

LRD OAK GROVE RD

Good

Over: BR ROCK RIVER

0.75M S LAKE MARIA RD, Fond du Lac, WI

Built 2009 Load: 36.3 t ADT: 272

LRD KIEL ROAD

Good

Over: SOUTH BRANCH MANITOWOC R

1.8M W CTH G, Fond du Lac, WI

Built 2009 Load: 36.3 t ADT: 901

LRD MELODY LANE

Good

Over: ANDERSON CREEK

AT ANDERSON CREEK, Fond du Lac, WI

Built 2014 Load: 36.3 t ADT: 530

LRD OLD HWY 8

Good

Over: WOLF RIVER

3.1M W JCT CTH S, Forest, WI

Built 2012 Load: 36.3 t ADT: 258

LRD CHESTNUT STREE

Good

Over: ROUNTREE BRANCH

0.15 MI N JCT BUS HWY 151, Grant, WI

Built 2010 Load: 36.3 t ADT: 2,562

LRD BREWERY HOLLOW

Good

Over: POTOSI BRANCH

0.1M E JCT STH 133, Grant, WI

Built 2021 Load: 36.3 t ADT: 270

CTH K

Good

Over: BR RICHLAND CREEK

1.3M N JCT CTH P, Green, WI

Built 2011 Load: 36.3 t ADT: 940

CTH Y

Good

Over: JORDAN CREEK

0.1M E JCT CTH M, Green, WI

Built 2022 Load: 36.3 t ADT: 865

LRD CLAY HILL RD

Good

Over: GORDON CREEK

2.0 M E OF JCT CTH F, Iowa, WI

Built 2016 Load: 36.3 t ADT: 60

CTH W

Good

Over: DODGE BRANCH

2.7M N JCT STH 39, Iowa, WI

Built 2023 Load: 36.3 t ADT: 220

CTH H

Good

Over: UNNAMED CREEK

0.6 MI N JCT CTH Y, Iowa, WI

Built 2023 Load: 36.3 t ADT: 310

STH 26 NB

Good

Over: ROCK R

0.6 MI. N IF CTH Y, Jefferson, WI

Built 2010 Load: 36.3 t ADT: 4,500

STH 26 SB

Good

Over: ROCK R

0.6 MI. N OF CTH Y, Jefferson, WI

Built 2010 Load: 36.3 t ADT: 4,500

COAVER ROAD

Good

Over: LITTLE YELLOW RIVER

SEC 31 T19N R3E, Juneau, WI

Built 1993 Load: 36.3 t ADT: 1

CTH S WB

Good

Over: CPRR

AT CPRR, Kenosha, WI

Built 2020 Load: 36.3 t ADT: 9,355

LRD ST PETER'S RD

Good

Over: E TWIN RIVER

0.3M N JCT CTH J, Kewaunee, WI

Built 2018 Load: 36.3 t ADT: 180

CTH YY

Good

Over: BOSTWICK CREEK

0.4M S JCT CTH M, La Crosse, WI

Built 2012 Load: 36.3 t ADT: 913

LRD S GALENA RD NB

Good

Over: BR GALENA RIVER

0.8M N JCT CTH H, Lafayette, WI

Built 2016 Load: 36.3 t ADT: 127

LRD BETHEL GROVE R

Good

Over: COTTAGE INN BRANCH

1.0M S JCT USH 151, Lafayette, WI

Built 2018 Load: 36.3 t ADT: 160

CTH O

Good

Over: AMES BRANCH

2.4M S JCT STH 81, Lafayette, WI

Built 2023 Load: 36.3 t ADT: 870

CTH T

Good

Over: DEVIL"S RIVER

1.9 MI NORTH OF CTH "T", Manitowoc, WI

Built 2011 Load: 36.3 t ADT: 580

CTH CR

Good

Over: CALVIN CR

TBD, Manitowoc, WI

Built 2010 Load: 36.3 t ADT: 2,400

LRD CENTER RD

Good

Over: CENTERVILLE CREEK

0.5M N JCT CTH XX, Manitowoc, WI

Built 2018 Load: 36.3 t ADT: 60

OLD Y ROAD

Good

Over: WEST TWIN RIVER

0.2 MI WEST OF JCT CTH Q, Manitowoc, WI

Built 2021 Load: 36.3 t ADT: 569

CTH JJ

Good

Over: MANITOWOC RIVER

2.3M W JCT CTH J, Manitowoc, WI

Built 2022 Load: 36.3 t ADT: 1,220

CTH G

Good

Over: BR EAU CLAIRE RIVER

0.2M W JCT CTH Y, Marathon, WI

Built 2009 Load: 36.3 t ADT: 499

LRD HOLTON RD

Good

Over: E BR BIG EAU PLEINE RIVE

0.7M W JCT CTH F, Marathon, WI

Built 2021 Load: 36.3 t ADT: 90

CTH K

Good

Over: S BR COUNTY LINE CREEK

1.7M N JCT CTH F, Marathon, WI

Built 2022 Load: 36.3 t ADT: 3,400

LRD N 5TH RD (DEAD

Good

Over: LITTLE PESHTIGO RIVER

0.2M N JCT CTH B, Marinette, WI

Built 2020 Load: 36.3 t ADT: 30

LRD 11TH LANE

Good

Over: CHAFFEE CREEK

.2M N OF CTH Z, Marquette, WI

Built 2012 Load: 36.3 t ADT: 100

IH 94 WB

Good

Over: HANK AARON STATE TRAIL

0.5 M W JCT STH 100, Milwaukee, WI

Built 2017 Load: 36.3 t ADT: 68,500

IH 94 EB

Good

Over: S BR UNDERWOOD CREEK

2.07 MI E JCT CTH O/MOORL, Milwaukee, WI

Built 2016 Load: 36.3 t ADT: 67,000

IH 41 SB/IH 894 EB

Good

Over: UPRR

1.5 MI S JCT IH 94, Milwaukee, WI

Built 2017 Load: 36.3 t ADT: 80,000

CTH BB

Good

Over: BAILEY CREEK

1.0M WEST STH 21, Monroe, WI

Built 2010 Load: 36.3 t ADT: 377

STH 71

Good

Over: BR BARABOO RIVER

2.3M E JCT C, Monroe, WI

Built 2011 Load: 36.3 t ADT: 2,400

CTH BC

Good

Over: BIG CREEK

3.8M N JCT STH 16, Monroe, WI

Built 2015 Load: 36.3 t ADT: 670

CTH N

Good

Over: LITTLE LEMONWEIR RIVER

0.4M S JCT CTH A, Monroe, WI

Built 2019 Load: 36.3 t ADT: 460

Showing 10,951-11,000 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.