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

LRD HIGHLAND DR

Good

Over: ARTUS CREEK

1.1M E JCT STH 107, Marathon, WI

Built 2023 Load: 37.9 t ADT: 110

CTH H

Good

Over: WILLOW CREEK

1.8M N JCT CTH A, Marathon, WI

Built 2023 Load: 37.9 t ADT: 950

LRD N 70TH ST

Good

Over: MENOMONEE RIVER

0.6M N JCT USH 18, Milwaukee, WI

Built 2011 Load: 37.9 t ADT: 3,526

IH 41 NB/IH 894 WB

Good

Over: CNW RR

3.4 MI W JCT IH 43, Milwaukee, WI

Built 2016 Load: 37.9 t ADT: 80,000

LRD S HOWELL AVE

Good

Over: UP RR

0.4M N JCT STH 38, Milwaukee, WI

Built 1958 Load: 37.9 t ADT: 5,400

LRD NEW RD

Good

Over: BR PLUM CREEK

1.1M E JCT CTH GG, Outagamie, WI

Built 2023 Load: 37.9 t ADT: 49

CTH K

Good

Over: WAPOGASSET BRANCH

2.3M E JCT STH 65, Polk, WI

Built 2023 Load: 37.9 t ADT: 1,250

LRD FISH SCHOOL RD

Good

Over: BR KNAPP CREEK

0.3M E JCT CTH U, Richland, WI

Built 2017 Load: 37.9 t ADT: 20

LRD HORSESHOE LAKE

Good

Over: MCDERMOTT CREEK

APPROXIMATELY 0.5 MI W OF, Rusk, WI

Built 2023 Load: 37.9 t ADT: 50

CTH PF

Good

Over: SEELEY CREEK

0.5M S JCT CTH W, Sauk, WI

Built 2009 Load: 37.9 t ADT: 540

USH 12 WB

Good

Over: BARABOO RIVER

2 M W JCT STH 159, Sauk, WI

Built 2016 Load: 37.9 t ADT: 15,400

LRD MARSHALL RD

Good

Over: CARR VALLEY BRANCH

0.3M W JCT CTH G, Sauk, WI

Built 2023 Load: 37.9 t ADT: 175

CTH D

Good

Over: MONDEAUX RIVER

0.5M E JCT CTH E, Taylor, WI

Built 2009 Load: 37.9 t ADT: 297

LRD RIPHENBURG RD

Good

Over: KING CREEK

0.7M W JCT CTH O, Trempealeau, WI

Built 2018 Load: 37.9 t ADT: 100

CTH D

Good

Over: S FK BEAVER CREEK

0.5M S JCT USH 53, Trempealeau, WI

Built 2020 Load: 37.9 t ADT: 1,200

CTH K

Good

Over: WISCONSIN RIVER

0.2M W JCT USH 45, Vilas, WI

Built 2021 Load: 37.9 t ADT: 1,561

IH 41 NB

Good

Over: TRIBUTARY TO E BRANCH RO

0.9 MI N JCT STH 33, Washington, WI

Built 2020 Load: 37.9 t ADT: 15,750

LRD MADISON ST.

Good

Over: PEBBLE CREEK

0.4 MI WEST OF CTH TT, Waukesha, WI

Built 2016 Load: 37.9 t ADT: 530

CTH K

Good

Over: MILL CREEK

2.3M N XING OF E, Wood, WI

Built 2009 Load: 37.9 t ADT: 680

CTH Q

Good

Over: BRANCH ELM CREEK

1.0M EAST CTH D, Wood, WI

Built 2009 Load: 37.9 t ADT: 422

CTH N

Good

Over: E FK CHIPPEWA RIVER

0.2M E JCT STH 13, Ashland, WI

Built 2011 Load: 38.2 t ADT: 357

STH 13

Good

Over: TROUT BROOK

0.3 MI N JCT SECTION FIVE, Ashland, WI

Built 2016 Load: 38.2 t ADT: 2,000

LRD OLD HWY 13 EB

Good

Over: FISH CREEK

1.0M E JCT STH 13, Bayfield, WI

Built 2016 Load: 38.2 t ADT: 100

LRD OLD HWY 13 EB

Good

Over: REEFER CREEK

1.8M E JCT STH 13, Bayfield, WI

Built 2016 Load: 38.2 t ADT: 100

LRD SNAKE TRAIL RO

Good

Over: HAWKINS CREEK

0.4M SOUTH OF 4 CORNERS R, Bayfield, WI

Built 2020 Load: 38.2 t ADT: 101

STH 29 WB-STH 32 N

Good

Over: DUCK CREEK

1.0M W JCT USH 41 TO N, Brown, WI

Built 2013 Load: 38.2 t ADT: 16,900

STH 29 EB-STH 32 S

Good

Over: DUCK CREEK

0.3M E JCT CTH J, Brown, WI

Built 2013 Load: 38.2 t ADT: 16,900

LRD WHITWORTH RD

Good

Over: PESSO CREEK

0.5M S JCT STH 37, Buffalo, WI

Built 2012 Load: 38.2 t ADT: 123

CTH TT

Good

Over: CHIPPEWA RIVER

0.1 M E STH 178, Chippewa, WI

Built 2023 Load: 38.2 t ADT: 280

CTH P

Good

Over: BRANCH DUCK CREEK

2.2M E JCT CTH SS, Columbia, WI

Built 2010 Load: 38.2 t ADT: 517

STH 42

Good

Over: COFFRIN CREEK

0.97 MI N OF CTH X LT, Door, WI

Built 2015 Load: 38.2 t ADT: 1,500

LRD BARDON CREEK R

Good

Over: BARDON CREEK

0.7M W JCT CTH F, Douglas, WI

Built 2017 Load: 38.2 t ADT: 100

LRD JOHNSON RD

Good

Over: DRY RUN

0.3 MI EAST OF CTH S, Grant, WI

Built 2014 Load: 38.2 t ADT: 100

LRD IDEAL RD

Good

Over: GUNDERSON VALLEY CREEK

0.6 MI N JCT GOLR RD, Grant, WI

Built 2017 Load: 38.2 t ADT: 100

LRD SMOKEY HOLLOW

Good

Over: SMOKEY HOLLOW CR TRIB

AT SMOKEY HOLLOW CR TRIBU, Iowa, WI

Built 2016 Load: 38.2 t ADT: 100

STH BUS STH 26-MAI

Good

Over: ROCK RIVER

3.9M N JCT CTH K TO N, Jefferson, WI

Built 2023 Load: 38.2 t ADT: 8,500

CTH C

Good

Over: BONNER BRANCH

0.1M N JCT CTH G, Lafayette, WI

Built 2023 Load: 38.2 t ADT: 165

LRD MONARCH RD

Good

Over: SPRING BROOK

0.8M E JCT CTH X, Langlade, WI

Built 2011 Load: 38.2 t ADT: 102

LRD MEADOW LANE

Good

Over: FRANCIS CREEK

.25 MI. EAST OF CTH "R", Manitowoc, WI

Built 2010 Load: 38.2 t ADT: 292

CTH Y NB & SB

Good

Over: BR EAU CLAIRE RIVER

0.2M S JCT CTH G, Marathon, WI

Built 2015 Load: 38.2 t ADT: 150

CTH BB

Good

Over: LITTLE RIVER

1.8M S JCT CTH B, Marinette, WI

Built 2016 Load: 38.2 t ADT: 1,400

LRD OPAL RD (DEAD

Good

Over: BRUSH CREEK

0.1M S JCT STH 33, Monroe, WI

Built 2018 Load: 38.2 t ADT: 100

LRD APPLETON STREE

Good

Over: ENTRANCE TO JONES PARK

APPLETON, WI, Outagamie, WI

Built 2019 Load: 38.2 t ADT: 3,600

LRD 30TH ST

Good

Over: WILLOW RIVER

1.7 MILES S OF JUNCTION W, Polk, WI

Built 2021 Load: 38.2 t ADT: 100

STH 20/STH 83/MAIN

Good

Over: FOX RIVER

1.3 MI E JCT STH 83, Racine, WI

Built 2020 Load: 38.2 t ADT: 10,700

LRD GATEWAY BOULEV

Good

Over: SPRING BROOK CREEK

0.6M W JCT CTH X, Rock, WI

Built 2011 Load: 38.2 t ADT: 1,537

LRD RUGER AVENUE

Good

Over: SPRING BROOK

2.0M W JCT STH 11, Rock, WI

Built 2010 Load: 38.2 t ADT: 3,690

LRD DORNER RD

Good

Over: TAYLOR CREEK

3.2M E JCT CTH B, Rock, WI

Built 2012 Load: 38.2 t ADT: 50

LRD DZIEMELA RD.

Good

Over: POTATO CREEK

0.7M N JCT CTH D-54, Rusk, WI

Built 2016 Load: 38.2 t ADT: 50

LRD NORTH STODDARD

Good

Over: BR COON CREEK

0.7M N JCT STH 162, Vernon, WI

Built 2016 Load: 38.2 t ADT: 20

Showing 11,801-11,850 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.