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 GUENTHER RD

Good

Over: LITTLE EAU CLAIRE RIVER

1.4M N JCT CTH C, Marathon, WI

Built 1997 Load: 38.9 t ADT: 30

LRD SANDY CREEK RD

Good

Over: LITTLE EAU CLAIRE RIVER

1.4M E JCT CTH X, Marathon, WI

Built 2000 Load: 38.9 t ADT: 110

LRD FAIRVIEW RD

Good

Over: FENWOOD CREEK

1.2M E JCT CTH M, Marathon, WI

Built 1998 Load: 38.9 t ADT: 251

STH 153

Good

Over: BIG EAU PLEINE RIVER

0.6M E JCT CTH M, Marathon, WI

Built 2001 Load: 38.9 t ADT: 3,000

STH 52

Good

Over: W BR BIG SANDY CR

1.2M E JCT CTH J TO N, Marathon, WI

Built 2002 Load: 38.9 t ADT: 2,400

STH 153

Good

Over: LITTLE EAU PLEINE RIVER

2.2M E JCT STH 13, Marathon, WI

Built 2004 Load: 38.9 t ADT: 1,000

LRD DAY AVE

Good

Over: SCHEUR CREEK

1.3M E JCT CTH T, Marathon, WI

Built 2004 Load: 38.9 t ADT: 110

LRD JUNCTION RD

Good

Over: BR BIG SANDY CREEK

0.4M W JCT CTH Q, Marathon, WI

Built 2006 Load: 38.9 t ADT: 115

CTH L

Good

Over: STONEY CREEK

0.8M N JCT CTH H, Marathon, WI

Built 2009 Load: 38.9 t ADT: 478

LRD STAADT AVE

Good

Over: LITTLE EAU PLEINE RIVER

1.7M NJCT STH 97, Marathon, WI

Built 2021 Load: 38.9 t ADT: 115

LRD EMMET RD (DEAD

Good

Over: BR FREEMAN CREEK

0.1M N JCT STH 153, Marathon, WI

Built 1958 Load: 38.9 t ADT: 30

LRD 11TH RD

Good

Over: S BR BEAVER CREEK

0.7M S JCT CTH P, Marinette, WI

Built 1989 Load: 38.9 t ADT: 100

LRD FORBES RD

Good

Over: S BR PIKE RIVER

2.7M E JCT CTH A, Marinette, WI

Built 1996 Load: 38.9 t ADT: 50

LRD LILY LAKE RD

Good

Over: N BR PIKE RIVER

4.7M S JCT USH 8, Marinette, WI

Built 1995 Load: 38.9 t ADT: 211

LRD PIKE RIVER DR

Good

Over: N BR PIKE RIVER

1.4M E JCT USH 8, Marinette, WI

Built 1996 Load: 38.9 t ADT: 20

LRD SAND RD

Good

Over: MISCAUNO CREEK

0.8M S JCT CTH Z, Marinette, WI

Built 1995 Load: 38.9 t ADT: 100

USH 8

Good

Over: S BR PEMEBONWON RIVER

8.5M E JCT CTH U, Marinette, WI

Built 1995 Load: 38.9 t ADT: 1,700

USH 8

Good

Over: S BR PEMEBONWON RIVER

9.5M E JCT CTH U, Marinette, WI

Built 1995 Load: 38.9 t ADT: 1,700

LRD CCC CAMP ROAD

Good

Over: PIKE RIVER

PIKE R., Marinette, WI

Built 1997 Load: 38.9 t ADT: 125

USH 41 NB

Good

Over: CN RR

1.2 MI N OF CTH B, Marinette, WI

Built 2009 Load: 38.9 t ADT: 5,700

LRD N MAIN ST

Good

Over: TRIBUTARY TO WESTFIELD C

0.7M W JCT USH 51 0.07M N, Marquette, WI

Built 2023 Load: 38.9 t ADT: 2,930

LRD OAK CREEK PARK

Good

Over: OAK CREEK

0.1M E JCT STH 32 (CHIC A, Milwaukee, WI

Built 1999 Load: 38.9 t ADT: 2,073

IH 794

Good

Over: LAND

3.1 MI E JCT IH 94, Milwaukee, WI

Built 1977 Load: 38.9 t ADT: 35,800

LRD W WALNUT ST

Good

Over: CANADIAN PACIFIC RR

0.7M W JCT STH 57, Milwaukee, WI

Built 1996 Load: 38.9 t ADT: 856

LRD 15TH AVE

Good

Over: OAK CREEK

0.3M S JCT COLLEGE (CTH Z, Milwaukee, WI

Built 2002 Load: 38.9 t ADT: 3,400

CTH T, WEST BELOIT

Good

Over: ROOT RIVER

0.1M W JCT STH 100, Milwaukee, WI

Built 2005 Load: 38.9 t ADT: 10,400

CTH OO W FOREST H

Good

Over: BR OF ROOT RIVER

0.1M W JCT STH 100, Milwaukee, WI

Built 2005 Load: 38.9 t ADT: 14,900

IH RAMP IH 41NB/94

Good

Over: OAK CREEK

0.4 MI S JCT STH 100 (RYA, Milwaukee, WI

Built 2013 Load: 38.9 t ADT: 3,900

IH RAMP STH 100/RY

Good

Over: OAK CREEK

2.3 M N JCT STH 241, Milwaukee, WI

Built 2013 Load: 38.9 t ADT: 5,300

STH 131

Good

Over: KICKAPOO RIVER

2.1M N JCT STH 71 TO E, Monroe, WI

Built 1984 Load: 38.9 t ADT: 3,200

STH 71-MCGARY ST

Good

Over: BR MORRIS CREEK

0.1M E JCT CTH T TO N, Monroe, WI

Built 1992 Load: 38.9 t ADT: 1,600

CTH T

Good

Over: MORRIS CREEK

0.9M S JCT CTH F, Monroe, WI

Built 1997 Load: 38.9 t ADT: 534

STH 33

Good

Over: BRUSH CREEK

5.0M E JCT CTH D, Monroe, WI

Built 2001 Load: 38.9 t ADT: 1,800

LRD ENGLAND RD

Good

Over: MILL CREEK

0.4M N JCT CTH G, Monroe, WI

Built 1999 Load: 38.9 t ADT: 16

CTH F

Good

Over: BR MORRIS CREEK

0.7M S JCT CTH T, Monroe, WI

Built 2002 Load: 38.9 t ADT: 192

LRD GATEWAY AVE

Good

Over: HANSEN CREEK

.1 M E OF JCT CTH Q, Monroe, WI

Built 2014 Load: 38.9 t ADT: 120

CTH Z

Good

Over: POE CREEK

0.2M E JCT STH 131, Monroe, WI

Built 2021 Load: 38.9 t ADT: 242

LRD MALLARD RD

Good

Over: BR LITTLE LACROSSE RIVER

1.0M S JCT CTH J, Monroe, WI

Built 1990 Load: 38.9 t ADT: 84

CTH A

Good

Over: KELLY BROOK

2.9M W JCT USH 141, Oconto, WI

Built 1998 Load: 38.9 t ADT: 2,900

LRD RIVER RD

Good

Over: S BR OCONTO RIVER

1.6M N JCT STH 32, Oconto, WI

Built 1994 Load: 38.9 t ADT: 381

CTH J

Good

Over: LITTLE RIVER

3.3M N JCT STH 22, Oconto, WI

Built 1999 Load: 38.9 t ADT: 311

USH 41 NB-USH 141

Good

Over: LITTLE SUAMICO RIVER

11.1M N JCT US 141 TO S, Oconto, WI

Built 1999 Load: 38.9 t ADT: 15,300

USH 141 NB

Good

Over: KELLY BROOK

1.0M N CTH A, Oconto, WI

Built 2004 Load: 38.9 t ADT: 5,400

USH 141 SB

Good

Over: KELLY BROOK

0.2M S JCT KRIESCHER RD, Oconto, WI

Built 2004 Load: 38.9 t ADT: 5,400

STH 22

Good

Over: LITTLE RIVER

1.8M N JCT USH 141, Oconto, WI

Built 2005 Load: 38.9 t ADT: 2,900

STH 70

Good

Over: MUD CREEK

3.1M E JCT CTH F, Oneida, WI

Built 1966 Load: 38.9 t ADT: 6,000

STH 47

Good

Over: HERMAN CREEK

1.6M N JCT CTH F, Outagamie, WI

Built 1992 Load: 38.9 t ADT: 6,400

CTH D

Good

Over: MAPLE CREEK

1.2M S JCT CTH WW TO W, Outagamie, WI

Built 1995 Load: 38.9 t ADT: 1,025

CTH N WASHINGTON S

Good

Over: FOX RIVER

0.2M N JCT CTH Z, Outagamie, WI

Built 2000 Load: 38.9 t ADT: 15,300

LRD FRENCH ROAD

Good

Over: APPLE CREEK

0.3M N JCT USH 41, Outagamie, WI

Built 1999 Load: 38.9 t ADT: 591

Showing 12,151-12,200 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.