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 P NB

Unknown

Over: STH 11/36

AT CTH P, Racine, WI

Built 2009 ADT: 9,500

CTH P SB

Unknown

Over: STH 11/36

AT HWY P, Racine, WI

Built 2009 ADT: 9,500

STH RAMP TO STH 83

Unknown

Over: STH 36/STH 83

0.7M N CTH A, Racine, WI

Built 2007 ADT: 5,600

UNION PACIFIC RAIL

Unknown

Over: STH 11 (DURAND AVE)

AT RAILROAD, Racine, WI

Built 2010 ADT: 21,700

IH 41 SB/IH 94 EB

Unknown

Over: LRD BRAUN RD

AT IH 41, Racine, WI

Built 2019 ADT: 3,900

IH 41 NB/94 WB

Unknown

Over: LRD BRAUN RD

2.0M W JCT CTH H, Racine, WI

Built 2018 ADT: 3,900

IH 41 SB/IH 94 EB

Unknown

Over: STH 11

5.2M E JCT USH 45, Racine, WI

Built 2019 ADT: 19,450

IH 41 NB/94 WB

Unknown

Over: STH 11

5.2M E JCT USH 45, Racine, WI

Built 2018 ADT: 19,450

IH 41 SB/IH 94 EB

Unknown

Over: LRD 58TH RD

1.1M W JCT STH 11, Racine, WI

Built 2019 ADT: 1,500

IH 41 NB/94 WB

Unknown

Over: LRD 58TH RD

1.1M W JCT STH 11, Racine, WI

Built 2018 ADT: 1,500

IH 41 SB/94 EB

Unknown

Over: STH 20

AT IH 41/94, Racine, WI

Built 2015 ADT: 24,500

IH 41 NB/94 WB

Unknown

Over: STH 20

AT USH94, Racine, WI

Built 2014 ADT: 24,500

CTH C-SPRING ST

Unknown

Over: IH 41/94

AT CTH C, Racine, WI

Built 2014 ADT: 96,000

IH 41 SB/IH 94 EB

Unknown

Over: LRD KRAUT RD

1.3M W JCT CTH V, Racine, WI

Built 2019 ADT: 600

IH 41 NB/94 WB

Unknown

Over: LRD KRAUT RD

1.3M W JCT CTH V, Racine, WI

Built 2018 ADT: 1,200

IH 41 SB/IH 94 EB

Unknown

Over: LRD GOLF ROAD

0.9M W JCT CTH V, Racine, WI

Built 2019 ADT: 500

IH 41 NB/94 WB

Unknown

Over: LRD GOLF RD

0.9M W JCT CTH V, Racine, WI

Built 2018 ADT: 500

IH 41 SB/IH 94 EB

Unknown

Over: CTH K

1.1M W JCT CTH V, Racine, WI

Built 2019 ADT: 8,600

IH 41 NB/94 WB

Unknown

Over: CTH K

1.1M W JCT CTH V, Racine, WI

Built 2018 ADT: 8,600

CTH G

Unknown

Over: IH 41/94

AT CTH G, Racine, WI

Built 2009 ADT: 101,000

IH 41 SB/94 EB

Unknown

Over: LRD 7 MILE RD

AT IH 41, Racine, WI

Built 2019 ADT: 5,100

IH 41 NB/IH 94 WB

Unknown

Over: LRD 7 MILE RD

1.0M W JCT CTH V, Racine, WI

Built 2019 ADT: 5,100

LRD W 6TH ST

Unknown

Over: LRD HORLICK DR, ROOT RIV

AT 6TH STREET, Racine, WI

Built 2022 ADT: 99

CNW RR

Unknown

Over: STH 11

3.6M E JCT IH 94 TO W, Racine, WI

Built 1941 ADT: 18,400

CNW RR

Unknown

Over: LRD FIVE MILE RD

0.2M W JCT STH 38, Racine, WI

Built 1940 ADT: 200

CNW RR

Unknown

Over: LRD DUNKELOW RD

0.5M W JCT STH 38, Racine, WI

Built 1940 ADT: 750

CMSTPP RR

Unknown

Over: LRD 67TH DR

0.6M N JCT STH 11, Racine, WI

Built 1946 ADT: 80

CNW RR

Unknown

Over: LRD MOUND AVE

0.3M S JCT STH 38, Racine, WI

Built 1910 ADT: 7,500

CNW RR

Unknown

Over: LRD 9TH ST

0.2M W JCT STH 20, Racine, WI

Built 1910 ADT: 12,000

CNW RR

Unknown

Over: LRD W 6TH ST

0.4M W JCT STH 20, Racine, WI

Built 1925 ADT: 10,220

LRD E MEMORIAL DR

Unknown

Over: USH 51-N PARKER DR

0.6M N JCT STH 26, Rock, WI

Built 1970 ADT: 15,900

IH 43 NB

Unknown

Over: CTH X / HART RD

2.2M E JCT IH 90, Rock, WI

Built 1976 ADT: 3,300

IH 43 SB

Unknown

Over: CTH X / HART RD

2.2M E JCT IH 90, Rock, WI

Built 1976 ADT: 3,300

IH 43 NB

Unknown

Over: LRD SCHROEDER RD

0.5M N JCT CTH X, Rock, WI

Built 1975 ADT: 129

IH 43 SB

Unknown

Over: LRD SCHROEDER RD

0.5M N JCT CTH X, Rock, WI

Built 1975 ADT: 129

IH 43 NB

Unknown

Over: LRD BUSS RD

1.9M E JCT CTH J, Rock, WI

Built 1975 ADT: 533

IH 43 SB

Unknown

Over: LRD BUSS RD

1.9M E JCT CTH J, Rock, WI

Built 1975 ADT: 533

IH 43 NB

Unknown

Over: CTH J

1.3M N JCT CTH X, Rock, WI

Built 1975 ADT: 550

IH 43 NB

Unknown

Over: STH 140

3.0M N JCT CTH P, Rock, WI

Built 1975 ADT: 4,400

IH 43 SB

Unknown

Over: STH 140

3.1M N JCT CTH P, Rock, WI

Built 1975 ADT: 4,400

IH 43 NB

Unknown

Over: LRD CARVERS ROCK RD

0.6M N JCT CTH X, Rock, WI

Built 1975 ADT: 176

IH 43 SB

Unknown

Over: LRD CARVERS ROCK RD

0.6M N JCT CTH X, Rock, WI

Built 1975 ADT: 176

IH 43 NB

Unknown

Over: LRD SUMMERVILLE RD

0.4M N JCT CTH X, Rock, WI

Built 1975 ADT: 147

IH 43 SB

Unknown

Over: LRD SUMMERVILLE RD

0.4M N JCT CTH X, Rock, WI

Built 1975 ADT: 147

IH 43 SB

Unknown

Over: CTH J

1.3M N JCT CTH X, Rock, WI

Built 1975 ADT: 550

LRD CROSBY - WILLA

Unknown

Over: ROCK RIVER

AT CROSBY, Rock, WI

Built 1983 ADT: 99

LRD BLACK BRIDGE R

Unknown

Over: LRD HAUL ROAD

CITY OF JANESVILLE, Rock, WI

Built 1983 ADT: 99

STH EB STH 11

Unknown

Over: LRD READ RD

6.7M N JCT CTH S, Rock, WI

Built 1989 ADT: 429

USH 51

Unknown

Over: CTH F

0.1M E JCT USH 14 TO E, Rock, WI

Built 1995 ADT: 641

STH 11

Unknown

Over: LRD ROCKPORT RD

CITY OF JANESVILLE, Rock, WI

Built 2002 ADT: 99

Showing 2,151-2,200 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.