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

USH10-STH49/54 EB

Unknown

Over: STH 22 SB

1.5M S JCT USH 10 TO E, Waupaca, WI

Built 1996 ADT: 8,700

USH10-STH22/49/54

Unknown

Over: CTH E

1.2M S JCT STH 22, Waupaca, WI

Built 1996 ADT: 2,900

USH10-STH49-STH54

Unknown

Over: STH 22 SB

1.5M S JCT USH 10 TO E, Waupaca, WI

Built 1996 ADT: 9,200

USH 10 EB

Unknown

Over: CTH X

1.0M W JCT HWY 110, Waupaca, WI

Built 1998 ADT: 4,100

USH 10 WB

Unknown

Over: STH 110 EB / CTH X

5 MI W JCT STH 22, Waupaca, WI

Built 1998 ADT: 4,100

USH 10 EB

Unknown

Over: CTH H

VILLAGE OF FREMONT, Waupaca, WI

Built 2000 ADT: 1,000

USH 10 WB

Unknown

Over: CTH H/WOLF RIVER

VILLAGE OF FREMONT, Waupaca, WI

Built 2000 ADT: 99

USH 10 EB

Unknown

Over: STH 49

5.0M N JCT CTH A, Waupaca, WI

Built 1999 ADT: 2,600

USH 10 WB

Unknown

Over: STH 49

5.0M N JCT CTH A, Waupaca, WI

Built 1999 ADT: 2,600

USH 10 EB

Unknown

Over: LRD BROWN ROAD

VILLAGE OF FREMONT, Waupaca, WI

Built 1999 ADT: 200

USH 10 WB

Unknown

Over: LRD BROWN RD

VILLAGE OF FREMONT, Waupaca, WI

Built 1999 ADT: 250

USH10 EB

Unknown

Over: LRD WEST RD

VILLAGE OF FREMONT, Waupaca, WI

Built 2000 ADT: 300

USH 10 WB

Unknown

Over: LRD WEST RD

VILLAGE OF FREMONT, Waupaca, WI

Built 2000 ADT: 400

USH 10 WB

Unknown

Over: STH 110 NB

AT USH 10, Waupaca, WI

Built 2003 ADT: 3,400

USH 10 EB

Unknown

Over: STH 110

AT USH 10, Waupaca, WI

Built 2003 ADT: 3,400

USH 10 EB

Unknown

Over: STH CTH F

1.1M S JCT CTH X, Waupaca, WI

Built 2001 ADT: 1,300

USH 10 WB

Unknown

Over: CTH F

1.0M S JCT CTH X, Waupaca, WI

Built 1999 ADT: 1,300

USH 10 WB

Unknown

Over: LRD MARTIN RD

AT USH 10, Waupaca, WI

Built 2003 ADT: 250

USH 10 EB

Unknown

Over: LRD MARTIN RD

AT USH 10, Waupaca, WI

Built 2003 ADT: 400

STH 22/54 RAMP D

Unknown

Over: USH10

1.6M E JCT STH22 TO S, Waupaca, WI

Built 2001 ADT: 21,000

CTH A

Unknown

Over: USH 10

AT CTH A, Waupaca, WI

Built 2004 ADT: 20,300

USH10-STH22/49/54E

Unknown

Over: CTH E

1.2M S JCT STH 22, Waupaca, WI

Built 2020 ADT: 3,000

FV&W RR

Unknown

Over: STH 49-MAIN ST

1.2M N JCT CTH Q, Waupaca, WI

Built 1941 ADT: 3,000

GBW RR

Unknown

Over: LRD SPRING ST

0.1M S JCT CTH E, Waupaca, WI

Built 1900 ADT: 500

SOO LINE

Unknown

Over: CTH E OAK ST

0.5M N JCT CTH K, Waupaca, WI

Built 1906 ADT: 2,520

IH USH51-IH39 SB

Unknown

Over: CTH CH

1.0M S JCT CTH FF, Waushara, WI

Built 1957 ADT: 1,200

IH USH51-IH39 SB

Unknown

Over: LRD BUTTERCUP AVE

1.6M E JCT CTH V, Waushara, WI

Built 1966 ADT: 275

CTH C

Unknown

Over: IH USH 51-IH 39

6.2M N JCT STH 21 TO E, Waushara, WI

Built 1966 ADT: 10,200

CTH V

Unknown

Over: IH USH 51-IH 39

7.7M N JCT STH 21 TO E, Waushara, WI

Built 1966 ADT: 10,200

CTH O

Unknown

Over: IH USH 51-IH 39

1.7M N JCT CTH V TO E, Waushara, WI

Built 1966 ADT: 13,400

LRD ARCHER AVE

Unknown

Over: IH USH 51-IH 39

3.7M N JCT CTH V TO E, Waushara, WI

Built 1966 ADT: 11,200

IH USH51-IH39 NB

Unknown

Over: LRD CZECH AVE

1.9M E JCT CTH JJ, Waushara, WI

Built 1986 ADT: 80

IH USH 51-IH 39 SB

Unknown

Over: LRD CZECH AVE

2.0M E JCT CTH JJ, Waushara, WI

Built 1986 ADT: 80

IH USH51-IH39NB

Unknown

Over: CTH CH

7.5M E JCT CTH G, Waushara, WI

Built 1986 ADT: 1,200

STH 21

Unknown

Over: IH USH 51-IH 39

AT JCT STH 21-USH 51, Waushara, WI

Built 1985 ADT: 13,300

IH USH 51-IH 39 NB

Unknown

Over: LRD BUTTERCUP AVE

1.7M E JCT CTH V, Waushara, WI

Built 1984 ADT: 100

IH USH 51-IH 39 NB

Unknown

Over: STH 73

2.1M N JCT CTH BB, Waushara, WI

Built 1984 ADT: 4,900

IH USH 51-IH 39 SB

Unknown

Over: STH 73

2.1M N JCT CTH BB, Waushara, WI

Built 1984 ADT: 4,900

CNW RR

Unknown

Over: LRD BIGHORN LANE

0.4M E JCT STH 22, Waushara, WI

Built 1920 ADT: 80

IH 41 SB

Unknown

Over: LRD CECIL ST

0.6M S JCT STH 114, Winnebago, WI

Built 1969 ADT: 8,900

IH 41 NB

Unknown

Over: LRD CECIL ST

0.6M S JCT STH 114, Winnebago, WI

Built 1969 ADT: 8,900

CTH G

Unknown

Over: IH 41

4.2M N JCT USH 45 TO N, Winnebago, WI

Built 1975 ADT: 65,700

CTH Z

Unknown

Over: IH 41

4.0M N JCT CTH N TO N, Winnebago, WI

Built 1993 ADT: 42,900

CTH P

Unknown

Over: USH 10-STH 441

1.9M E JCT USH 41 TO S, Winnebago, WI

Built 1990 ADT: 48,600

USH 10 EB-STH 441

Unknown

Over: STH 47

0.3M N JCT CTH AP, Winnebago, WI

Built 1990 ADT: 17,000

USH 10 WB-STH 441

Unknown

Over: STH 47

0.4M N JCT CTH AP, Winnebago, WI

Built 1990 ADT: 17,000

STH 441 NB

Unknown

Over: USH 10

0.5M W JCT CTH AP, Winnebago, WI

Built 1993 ADT: 20,100

STH 441 SB

Unknown

Over: USH 10

0.5M W JCT CTH AP, Winnebago, WI

Built 1993 ADT: 20,100

IH 41 SB

Unknown

Over: STH 114

3.2M E JCT USH 45, Winnebago, WI

Built 1993 ADT: 27,800

IH 41 NB

Unknown

Over: STH 114

3.2M E JCT USH 45, Winnebago, WI

Built 1994 ADT: 27,800

Showing 2,751-2,800 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.