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 CEDAR BEACH RD

Unknown

Over: IH 43-STH 32

6.0M N JCT STH 32 TO S, Ozaukee, WI

Built 1974 ADT: 26,300

CTH D

Unknown

Over: IH 43-STH 32

7.0M N JCT STH 84 TO W, Ozaukee, WI

Built 1974 ADT: 24,800

LRD SILVER BEACH R

Unknown

Over: IH 43-STH 32

1.3M N JCT CTH D TO E, Ozaukee, WI

Built 1974 ADT: 24,800

IH 43 SB-STH 32 SB

Unknown

Over: LRD JAY RD

0.1M E JCT CTH LL, Ozaukee, WI

Built 1974 ADT: 90

IH 43 NB-STH 32 NB

Unknown

Over: LRD JAY RD

0.1M E JCT CTH LL, Ozaukee, WI

Built 1974 ADT: 90

LRD NORTHWOODS RD

Unknown

Over: IH 43

1.6M N JCT STH 33 TO E, Ozaukee, WI

Built 1974 ADT: 31,000

IH 43 NB-STH 32 NB

Unknown

Over: LRD PEBBLE BEACH RD

0.4M E JCT CTH LL, Ozaukee, WI

Built 1974 ADT: 330

IH 43 SB-STH 32 SB

Unknown

Over: LRD PEBBLE BEACH RD

0.4M E JCT CTH LL, Ozaukee, WI

Built 1974 ADT: 330

OZAUKEE INTERURBAN

Unknown

Over: IH 43

AT OZAUKEE TRAIL, Ozaukee, WI

Built 2010 ADT: 45,200

CTH W/PORT WASHING

Unknown

Over: IH 43/STH 32

1.5M N JCT STH 100, Ozaukee, WI

Built 2022 ADT: 72,700

CTH W/PORT WASHING

Unknown

Over: IH 43/STH 32

1.5M N JCT STH 100, Ozaukee, WI

Built 2023 ADT: 72,700

CTH C - PIONEER RD

Unknown

Over: IH 43/STH 32/57

4.3M N JCT STH 167 TO W, Ozaukee, WI

Built 2023 ADT: 59,800

LRD DONGES BAY RD

Unknown

Over: IH 43/STH 32

2.1M N JCT STH 100 TO S, Ozaukee, WI

Built 2022 ADT: 68,600

LRD FALLS RD

Unknown

Over: IH 43-STH 32-STH 57

6.3M N JCT STH 167 TO W, Ozaukee, WI

Built 2023 ADT: 58,400

LRD HIGHLAND AVE

Unknown

Over: IH 43-STH 32-STH 57

2.2M N JCT STH 167 TO W, Ozaukee, WI

Built 2022 ADT: 59,800

IH 43 NB-STH 32 NB

Unknown

Over: LRD LAKEFIELD RD

0.8M W JUNCT CTH C, Ozaukee, WI

Built 2023 ADT: 660

IH 43 SB-STH 32 SB

Unknown

Over: LRD LAKEFIELD RD

0.8M W JCT CTH C, Ozaukee, WI

Built 2023 ADT: 670

CNW RR

Unknown

Over: CTH CC SUNSET RD

0.1M E JCT STH 32, Ozaukee, WI

Built 1930 ADT: 600

STH 35

Unknown

Over: LRD GOLF VIEW RD

0.5M E JCT CUDD AVE, Pierce, WI

Built 1993 ADT: 1,650

STH 35

Unknown

Over: CTH M

0.9M E JCT STH 35, Pierce, WI

Built 1993 ADT: 5,000

USH 63

Unknown

Over: MISSISSIPPI RIVER 10

AT MINNESOTA STATE LINE, Pierce, WI

Built 2019 ADT: 650

CTH VV

Unknown

Over: CTH K

2.7M E JCT CTH E, Pierce, WI

Built 1931 ADT: 200

USH 8

Unknown

Over: LRD INTERSTATE PARK RD

AT JCT WITH USH 8, Polk, WI

Built 1956 ADT: 200

SOO LINE

Unknown

Over: STH 35-CASCADE ST

3.5M N JCT CTH X, Polk, WI

Built 1960 ADT: 10,000

USH 8 WB

Unknown

Over: STH 35 SB / S VINCENT ST

2.8M S JCT CTH Y, Polk, WI

Built 1995 ADT: 8,000

USH 8 EB

Unknown

Over: STH 35 SB / S VINCENT ST

2.8M S JCT CTH Y, Polk, WI

Built 1995 ADT: 8,800

SOO LINE

Unknown

Over: LRD TOWN RD

0.3M E JCT STH 35, Polk, WI

Built 1940 ADT: 80

SOO LINE

Unknown

Over: LRD FAIRGROUNDS RD

1.3M N JCT USH 8, Polk, WI

Built 1905 ADT: 175

SOO LINE

Unknown

Over: LRD MAPLE DR

1.0M E JCT USH 8, Polk, WI

Built 1920 ADT: 500

USH STH 54-USH B51

Unknown

Over: IH USH 51-IH 39

8.3M N JCT CTH W, Portage, WI

Built 1969 ADT: 14,100

IH USH51-IH39NB

Unknown

Over: CTH B

1.2M E JCT STH 54, Portage, WI

Built 1969 ADT: 18,408

IH USH51-IH39SB

Unknown

Over: CTH B

1.2M E JCT STH 54, Portage, WI

Built 1969 ADT: 18,408

CTH HH

Unknown

Over: IH USH 51-IH 39

4.8M N JCT STH 54 TO E, Portage, WI

Built 1969 ADT: 22,100

USH 10

Unknown

Over: IH USH 51-IH 39

6.7M N JCT STH 54 TO E, Portage, WI

Built 1968 ADT: 34,605

LRD BARBARAS LANE

Unknown

Over: IH USH 51-IH 39

0.5M N JCT USH 10 TO E, Portage, WI

Built 1968 ADT: 33,800

IH USH51-IH39NB

Unknown

Over: STH 66

1.8M E JCT USH 10, Portage, WI

Built 1968 ADT: 11,000

IH USH51-IH39SB

Unknown

Over: STH 66

1.7M E JCT USH 10, Portage, WI

Built 1968 ADT: 11,000

IH RAMP DIVISION S

Unknown

Over: IH USH 51-IH 39

2.0M N JCT STH 66 TO E, Portage, WI

Built 1969 ADT: 29,800

LRD N 2ND ST

Unknown

Over: IH USH 51-IH 39

0.3M N JCT USH B51 TO S, Portage, WI

Built 1969 ADT: 29,800

LRD WILSHIRE BLVD

Unknown

Over: IH USH 51-IH 39

0.5M N JCT STH 66 TO E, Portage, WI

Built 1969 ADT: 26,400

CTH D

Unknown

Over: IH USH 51-IH 39

3.0M N JCT STH 73, Portage, WI

Built 1980 ADT: 13,000

LRD 3RD AVE

Unknown

Over: IH USH 51-IH 39

2.0M N JCT CTH D, Portage, WI

Built 1980 ADT: 13,000

CTH W

Unknown

Over: IH USH 51-IH 39

3.5M N JCT CTH D, Portage, WI

Built 1979 ADT: 13,000

LRD CODDINGTON RD

Unknown

Over: IH USH 51-IH 39

4.0M N JCT CTH W, Portage, WI

Built 1978 ADT: 14,600

LRD BIRCH DR

Unknown

Over: IH USH 51-IH 39

7.3M N JCT CTH W, Portage, WI

Built 1978 ADT: 14,600

LRD CASMIR RD

Unknown

Over: IH USH 51-IH 39

1.7M N JCT USH B51 TO S, Portage, WI

Built 1972 ADT: 29,800

CTH X

Unknown

Over: IH USH 51-IH 39

3.6M N JCT USH B51 TO S, Portage, WI

Built 1971 ADT: 21,500

LRD MAPLE DR

Unknown

Over: IH USH 51-IH 39

2.6M N JCT CTH X TO E, Portage, WI

Built 1971 ADT: 21,500

CTH DB

Unknown

Over: IH USH 51-IH 39

6.0M N JCT CTH X TO E, Portage, WI

Built 1972 ADT: 22,800

SOO LINE

Unknown

Over: LRD MICHIGAN AVE

0.6M S JCT USH 10 TO E, Portage, WI

Built 1981 ADT: 7,850

Showing 2,051-2,100 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.