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

STH 29 WB

Unknown

Over: LRD ROSEBROOK ROAD

TOWN OF BELLE PLAINE, Shawano, WI

Built 1997 ADT: 600

STH 29 WB

Unknown

Over: CTH T

TOWN OF WAUKECHON, Shawano, WI

Built 1997 ADT: 500

STH 29 EB

Unknown

Over: USH 45

2.5M N JCT STH 153, Shawano, WI

Built 1997 ADT: 3,800

STH 29 WB

Unknown

Over: USH 45

2.6M N JCT STH 153, Shawano, WI

Built 1997 ADT: 3,000

LRD CTH Q

Unknown

Over: USH 45/STH 29

1.0M N JCT STH 29 TO EAST, Shawano, WI

Built 1997 ADT: 11,800

USH 45

Unknown

Over: STH 29

2.6M E JCT CTH OO, Shawano, WI

Built 1997 ADT: 10,500

LRD ST AUGUSTINE S

Unknown

Over: STH 29

1 MI W JCT STH 32, Shawano, WI

Built 2018 ADT: 7,950

MOUNTAIN BAY TRAIL

Unknown

Over: STH 117-CECIL ST

0.5M N JCT STH 29, Shawano, WI

Built 1933 ADT: 5,400

CTH PP

Unknown

Over: IH 43

1.9M N JCT STH 28 TO E, Sheboygan, WI

Built 1967 ADT: 36,100

CNW RR

Unknown

Over: IH 43

2.0M N JCT STH 28 TO E, Sheboygan, WI

Built 1967 ADT: 36,900

LRD MUELLER RD

Unknown

Over: IH 43

1.9M N JCT STH 23 TO E, Sheboygan, WI

Built 1965 ADT: 33,000

IH 43 SB

Unknown

Over: STH 42

AT JCT STH 42-IH 43, Sheboygan, WI

Built 1966 ADT: 13,600

IH 43 NB

Unknown

Over: STH 28

2.0M E JCT CTH EE, Sheboygan, WI

Built 1984 ADT: 18,500

IH 43 NB

Unknown

Over: CTH EE

0.4M E JCT CTH A, Sheboygan, WI

Built 1967 ADT: 5,000

IH 43 NB

Unknown

Over: CTH V

1.0M W JCT CTH KK, Sheboygan, WI

Built 1968 ADT: 2,200

IH 43 SB

Unknown

Over: CTH V

1.0M W JCT CTH KK, Sheboygan, WI

Built 1968 ADT: 2,200

IH 43 SB

Unknown

Over: LRD SMIES RD

1.8M E JCT STH 32, Sheboygan, WI

Built 1970 ADT: 250

IH 43 NB

Unknown

Over: LRD SMIES RD

1.8M E JCT STH 32, Sheboygan, WI

Built 1970 ADT: 250

IH 43 SB

Unknown

Over: LRD DEWITT RD

2.7M E JCT STH 32, Sheboygan, WI

Built 1969 ADT: 250

IH 43 NB

Unknown

Over: LRD DEWITT RD

2.7M E JCT STH 32, Sheboygan, WI

Built 1969 ADT: 250

IH 43 SB

Unknown

Over: CTH AA

1.4M E JCT CTH A, Sheboygan, WI

Built 1970 ADT: 4,900

IH 43 NB

Unknown

Over: CTH AA

1.4M E JCT CTH A, Sheboygan, WI

Built 1970 ADT: 4,900

CTH KK

Unknown

Over: IH 43

4.6M N JCT STH 32 TO N, Sheboygan, WI

Built 1970 ADT: 29,100

IH 43 SB

Unknown

Over: LRD WILSON-LIMA RD

0.4M W JCT CTH KK, Sheboygan, WI

Built 1970 ADT: 250

IH 43 NB

Unknown

Over: LRD WILSON-LIMA RD

0.4M W JCT CTH KK, Sheboygan, WI

Built 1970 ADT: 250

STH 32

Unknown

Over: IH 43

5.5M N JCT CTH D TO E, Sheboygan, WI

Built 1970 ADT: 24,900

IH 43 SB

Unknown

Over: CTH EE

0.4M E JCT CTH A, Sheboygan, WI

Built 1971 ADT: 3,000

IH 43 SB

Unknown

Over: STH 28

1.9M E JCT CTH EE, Sheboygan, WI

Built 1984 ADT: 18,500

IH 43 NB

Unknown

Over: STH 42

AT JCT IH 43, Sheboygan, WI

Built 1971 ADT: 13,600

IH 43 NB-STH 32 NB

Unknown

Over: LRD AMSTERDAM RD

0.5M E JCT STH 144, Sheboygan, WI

Built 1975 ADT: 690

IH 43 SB-STH 32 SB

Unknown

Over: LRD AMSTERDAM RD

0.5M E JCT STH 144, Sheboygan, WI

Built 1975 ADT: 690

LRD PLAYBIRD RD

Unknown

Over: IH 43

0.8M N JCT STH 42, Sheboygan, WI

Built 1979 ADT: 24,400

LRD GARTON RD

Unknown

Over: IH 43

1.8M N JCT STH 42, Sheboygan, WI

Built 1980 ADT: 243,000

LRD ROWE RD

Unknown

Over: IH 43

2.8M N JCT STH 42, Sheboygan, WI

Built 1979 ADT: 24,300

CTH FF

Unknown

Over: IH 43

3.8M N JCT STH 42, Sheboygan, WI

Built 1979 ADT: 24,300

CTH MM

Unknown

Over: IH 43

4.8M N JCT STH 42, Sheboygan, WI

Built 1980 ADT: 24,300

LRD ORCHARD RD

Unknown

Over: IH 43

5.8M N JCT STH 42, Sheboygan, WI

Built 1979 ADT: 24,300

IH RAMP IH 43S TO

Unknown

Over: STH 23

2.7M E JCT STH 32, Sheboygan, WI

Built 1977 ADT: 29,600

IH 43 SB

Unknown

Over: STH 23

2.7M E JCT STH 32, Sheboygan, WI

Built 1977 ADT: 29,600

IH 43 NB

Unknown

Over: STH 23

2.7M E JCT STH 32, Sheboygan, WI

Built 1977 ADT: 29,600

IH RAMP IH 43N TO

Unknown

Over: STH 23

2.7M E JCT STH 32, Sheboygan, WI

Built 1977 ADT: 29,600

STH 23 WB-KOHLER D

Unknown

Over: LRD TAYLOR DR

0.5M S JCT CTH O, Sheboygan, WI

Built 1979 ADT: 15,900

CTH Y

Unknown

Over: STH 23

2.0M E JCT STH 32, Sheboygan, WI

Built 1977 ADT: 25,300

LRD WOODLAND RD

Unknown

Over: STH 23

1.5M E JCT STH 32, Sheboygan, WI

Built 1977 ADT: 25,300

LRD RANGE LINE RD

Unknown

Over: STH 23

1.0M E JCT STH 32, Sheboygan, WI

Built 1977 ADT: 25,300

STH 23 EB

Unknown

Over: STH 32

1.0M N JCT STH 23 TO E, Sheboygan, WI

Built 1984 ADT: 10,200

STH 23 WB

Unknown

Over: STH 32

1.1M N JCT STH 23 TO N, Sheboygan, WI

Built 1984 ADT: 10,200

STH 23 EB

Unknown

Over: STH 67

0.7M N JCT CTH C, Sheboygan, WI

Built 1985 ADT: 5,900

STH 23 EB

Unknown

Over: STH 57

1.5M N JCT CTH PP, Sheboygan, WI

Built 1984 ADT: 11,500

STH 23 WB

Unknown

Over: STH 57

1.6M N JCT CTH PP, Sheboygan, WI

Built 1989 ADT: 11,500

Showing 2,351-2,400 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.