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 X

Good

Over: LITTLE TURTLE CREEK

1.8M W JCT CTH C, Walworth, WI

Built 2012 Load: 42.8 t ADT: 1,400

CTH G

Good

Over: HONEY CREEK

0.4 MI N JCT STH 43, Walworth, WI

Built 2018 Load: 42.8 t ADT: 2,400

CTH D (PEARL ST)

Good

Over: WOLF RIVER

0.1M N JCT CTH X, Waupaca, WI

Built 2010 Load: 42.8 t ADT: 6,500

LRD DIVISION AVE N

Good

Over: NORTH FORK POPPLE RIVER

0.7 M N OF PINE RD., Clark, WI

Built 2015 Load: 43.1 t ADT: 99

LRD HAYNES RD

Good

Over: FOX RIVER

0.1M W JCT STH 44, Columbia, WI

Built 2019 Load: 43.1 t ADT: 370

LRD HALL ROAD

Good

Over: CRAWFISH RIVER

0.9M W JCT STH 16, Columbia, WI

Built 2022 Load: 43.1 t ADT: 130

LRD NORWEGIAN HOLL

Good

Over: JOHNSON VALLEY CREEK

2.3M N JCT CTH C, Crawford, WI

Built 2023 Load: 43.1 t ADT: 110

CTH R

Good

Over: THOMPSON VALLEY CREEK

0.5M S CTH HH, Eau Claire, WI

Built 2019 Load: 43.1 t ADT: 1,730

LRD FIVE CORNER RD

Good

Over: CMSTPP RR

0.4M S JCT CTH K, Green, WI

Built 2018 Load: 43.1 t ADT: 345

CTH Y

Good

Over: DODGE BRANCH

2.3M S JCT STH 191, Iowa, WI

Built 2020 Load: 43.1 t ADT: 140

STH 26 NB

Good

Over: ROCK R

2.3M N JCT USH 18, Jefferson, WI

Built 2009 Load: 43.1 t ADT: 6,200

STH 26 SB

Good

Over: ROCK RIVER

2.3M N JCT USH 18, Jefferson, WI

Built 2009 Load: 43.1 t ADT: 6,200

CTH H

Good

Over: SCHOOL CREEK

0.1M N JCT STH 54, Kewaunee, WI

Built 1972 Load: 43.1 t ADT: 141

USH 10

Good

Over: BRANCH R

1.9 MI E OF CTH T, Manitowoc, WI

Built 2013 Load: 43.1 t ADT: 4,700

USH 141-ROOSEVELT

Good

Over: MENOMINEE RIVER

1.3M N JCT CTH N, Marinette, WI

Built 2011 Load: 43.1 t ADT: 6,600

FR 2330

Good

Over: NO BRANCH OCONTO RIVER

2.3 MI S OF JCT CTH F, Oconto, WI

Built 1968 Load: 43.1 t ADT: 50

STH 111

Good

Over: NEEDLE CR

1.3M N USH 8, Price, WI

Built 2017 Load: 43.1 t ADT: 660

LRD OLD LINE/STRAN

Good

Over: N FK BAD AXE RIVER

0.1M N JCT CTH B, Vernon, WI

Built 2019 Load: 43.1 t ADT: 95

LRD WATERTOWN PLAN

Good

Over: UNDERWOOD CREEK

0.6M N JCT USH 18, Waukesha, WI

Built 2016 Load: 43.1 t ADT: 7,500

IH VELP AVE TO IH

Good

Over: WISCONSIN CENTRAL LTD

BROWN COUNTY, Brown, WI

Built 2015 Load: 43.4 t ADT: 2,200

CTH N

Good

Over: YAHARA RIVER

5.8M W JCT CTH X, Dane, WI

Built 2017 Load: 43.4 t ADT: 580

CTH N

Good

Over: HANERVILLE CREEK

2.9M WEST OF CTH X, Dane, WI

Built 2021 Load: 43.4 t ADT: 740

STH 52

Good

Over: WOLF RIVER

500 FEET WEST OF STH 55, Langlade, WI

Built 2018 Load: 43.4 t ADT: 250

STH 107

Good

Over: SKANAWAN CREEK

0.2M S CTH S, Lincoln, WI

Built 2023 Load: 43.4 t ADT: 230

LRD MAPLE RIDGE RD

Good

Over: BULL JUNIOR CREEK

2.0M W JCT CTH X, Marathon, WI

Built 2020 Load: 43.4 t ADT: 161

LRD 10TH ROAD

Good

Over: UNION PACIFIC RAILROAD

AT UNION PACIFIC RAILROAD, Marquette, WI

Built 2014 Load: 43.4 t ADT: 110

SOUTH F STREET

Good

Over: TARR CREEK

So. F St. over Tarr Creek, Monroe, WI

Built 2005 Load: 43.4 t ADT: 1,000

CTH F

Good

Over: NORTH BR OCONTO RIVER

4.8MI EAST OF STH 32, Oconto, WI

Built 2009 Load: 43.4 t ADT: 510

USH 63

Good

Over: BNSF RR

AT BNSF RR, Pierce, WI

Built 2013 Load: 43.4 t ADT: 9,600

CTH E

Good

Over: HEMLOCK CREEK

0.5M N JCT CTH N, Wood, WI

Built 2018 Load: 43.4 t ADT: 260

STH 21

Good

Over: WISCONSIN R BACKWATER

1.2M E OF 18TH AVE, Adams, WI

Built 2010 Load: 43.7 t ADT: 4,300

CTH A DALLAS ST

Good

Over: UPPER PINE CREEK

0.5M W JCT CTH U, Barron, WI

Built 1993 Load: 43.7 t ADT: 872

LRD 22 1/2 STREET

Good

Over: CHETEK RIVER

1.5M S JCT CTH I, Barron, WI

Built 1997 Load: 43.7 t ADT: 54

LRD MAIN ST

Good

Over: BEAR CREEK

0.4M S JCT CTH V, Barron, WI

Built 2001 Load: 43.7 t ADT: 34

CTH SS

Good

Over: BEAR CREEK

2.8M N JCT CTH B TO W, Barron, WI

Built 1931 Load: 43.7 t ADT: 4,277

LRD 9 1/2 - 10 1/2

Good

Over: DORITS CREEK

2.0M S JCT CTH D, Barron, WI

Built 1984 Load: 43.7 t ADT: 58

LRD 1/2 AVENUE

Good

Over: VANCE CREEK

2.0M S JCT CTH A, Barron, WI

Built 1960 Load: 43.7 t ADT: 94

LRD BIG ROCK RD

Good

Over: SIOUX RIVER

1.5M N JCT CTH C, Bayfield, WI

Built 2007 Load: 43.7 t ADT: 286

STH 13

Good

Over: TERWILLIGER CREEK

0.1M N JCT USH 2 (B), Bayfield, WI

Built 2019 Load: 43.7 t ADT: 7,600

CTH A N NICOLET D

Good

Over: MAHON CREEK

0.5M N JCT STH 54, Brown, WI

Built 1993 Load: 43.7 t ADT: 8,000

LRD PARK RD

Good

Over: NESHOTA RIVER

0.6M E JCT CTH T, Brown, WI

Built 2009 Load: 43.7 t ADT: 175

STH 35-MAIN ST

Good

Over: TRIB BUFFALO SLOUGH

1.5M N JCT CTH E, Buffalo, WI

Built 2009 Load: 43.7 t ADT: 4,700

CTH T

Good

Over: LITTLE WAUMANDEE CREEK

0.1M W JCT STH 88, Buffalo, WI

Built 2000 Load: 43.7 t ADT: 108

LRD WOLFE RD

Good

Over: WAUMANDEE CREEK

2.6M N JCT CTH E, Buffalo, WI

Built 2001 Load: 43.7 t ADT: 21

STH 35-MAIN ST

Good

Over: BUFFALO RIVER

0.3M N JCT STH 37, Buffalo, WI

Built 2003 Load: 43.7 t ADT: 2,400

LRD PLANK RD

Good

Over: LITTLE WAUMANDEE CREEK

0.2M W JCT STH 88, Buffalo, WI

Built 2006 Load: 43.7 t ADT: 10

STH 88

Good

Over: LITTLE WAUMANDEE CREEK

0.7M N JCT CTH E TO E, Buffalo, WI

Built 2008 Load: 43.7 t ADT: 710

LRD ROTERING RD

Good

Over: FIMIAN CREEK

0.2M S JCT CTH S, Buffalo, WI

Built 2008 Load: 43.7 t ADT: 20

STH 40

Good

Over: COMO CREEK

4.1M N JCT CTH C, Chippewa, WI

Built 2001 Load: 43.7 t ADT: 810

STH 178

Good

Over: BOB CR

AT BOB CREEK, Chippewa, WI

Built 2005 Load: 43.7 t ADT: 2,500

Showing 13,201-13,250 of 14,851 bridges

Related

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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.