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

IH 43 NB

Unknown

Over: USH 14

1.1M E JCT CTH C, Walworth, WI

Built 1975 ADT: 7,400

IH 43 SB

Unknown

Over: LRD NORTH RD & TURTLE CR

0.3M N JCT CTH X, Walworth, WI

Built 1976 ADT: 190

IH 43 NB

Unknown

Over: LRD NORTH RD & TURTLE CR

0.3M N JCT CTH X, Walworth, WI

Built 1976 ADT: 190

IH 43 NB

Unknown

Over: LRD WESTBOUND LANE

0.9M W JCT USH 14, Walworth, WI

Built 1976 ADT: 200

IH 43 SB

Unknown

Over: LRD WESTBOUND LANE

0.9M W JCT USH 14, Walworth, WI

Built 1976 ADT: 200

STH 36

Unknown

Over: STH 11 & WHITE RIVER

AT STH 36, Walworth, WI

Built 2009 ADT: 7,500

LRD SPRING VALLEY

Unknown

Over: STH 11/STH 36

5.7M N JCT STH 120, Walworth, WI

Built 2008 ADT: 7,500

CTH NN EB

Unknown

Over: USH 12

0.3 MI S JCT IH 43, Walworth, WI

Built 2016 ADT: 18,800

CTH NN WB

Unknown

Over: USH 12

0.3 MI S JCT IH 43, Walworth, WI

Built 2016 ADT: 18,800

USH 12 WB

Unknown

Over: STH 50

UNDER HWY 12, Walworth, WI

Built 2015 ADT: 18,600

USH 12 EB

Unknown

Over: STH 50

AT USH12, Walworth, WI

Built 2014 ADT: 18,600

CMSTP&P RR

Unknown

Over: STH 67

0.2M N JCT CTH B TO E, Walworth, WI

Built 1940 ADT: 6,500

CMSTPP RR

Unknown

Over: USH 14

0.7M E JCT IH 43 TO N, Walworth, WI

Built 1932 ADT: 6,700

CMSTPP RR

Unknown

Over: STH 120

0.3M N ILLINOIS ST LINE, Walworth, WI

Built 1931 ADT: 5,300

USH 53 NB

Unknown

Over: USH 63

0.5M N JCT STH 70, Washburn, WI

Built 1986 ADT: 2,500

USH 53 SB

Unknown

Over: USH 63

0.5M N JCT STH 70, Washburn, WI

Built 1987 ADT: 2,500

STH 70

Unknown

Over: USH 53

0.6M N JCT STH 70, Washburn, WI

Built 1986 ADT: 6,000

WILD RIVERS STATE

Unknown

Over: USH 63

05610000000 004, Washburn, WI

USH 63

Unknown

Over: USH 53

6 MI N JCT STH 70, Washburn, WI

Built 2022 ADT: 8,800

WCL RR

Unknown

Over: USH 63

2.5M N JCT CTH F, Washburn, WI

Built 1936 ADT: 4,346

SOO LINE

Unknown

Over: CTH E

4.8M S JCT USH 63, Washburn, WI

Built 1978 ADT: 100

SOO LINE

Unknown

Over: CTH G

1.7M N JCT STH 77, Washburn, WI

Built 1915 ADT: 60

CNW RR

Unknown

Over: LRD PINE GROVE RD

0.1M W JCT USH 53, Washburn, WI

Built 1914 ADT: 20

CTH Q COUNTY LINE

Unknown

Over: IH 41-USH 45

1.9M N JCT STH 100 TO N, Washington, WI

Built 1969 ADT: 81,400

LRD MAPLE RD

Unknown

Over: IH 41-USH 45

3.4M N JCT STH 100 TO N, Washington, WI

Built 1970 ADT: 80,900

STH 167 EB

Unknown

Over: IH 41-USH 45

3.8M N JCT STH 100 TO N, Washington, WI

Built 1969 ADT: 81,800

LRD LANNON ROAD SB

Unknown

Over: IH 41-USH 45

3.8M N JCT STH 100 TO N, Washington, WI

Built 1969 ADT: 81,800

CTH Y/MEQUON RD

Unknown

Over: IH 41/USH 45

4.5M N JCT STH 100 TO N, Washington, WI

Built 1969 ADT: 80,000

LRD FREISTADT RD

Unknown

Over: IH 41-USH 45

5.8M N JCT STH 74 TO E, Washington, WI

Built 1969 ADT: 80,000

STH 167

Unknown

Over: IH 41-USH 45

7.0M N JCT STH 100 TO N, Washington, WI

Built 1969 ADT: 80,000

USH 45 SB

Unknown

Over: IH 41

1.8M N JCT STH 167 TO W, Washington, WI

Built 1975 ADT: 42,800

STH 145

Unknown

Over: IH 41

2.5M N JCT STH 167 TO W, Washington, WI

Built 1975 ADT: 42,800

STH 145

Unknown

Over: USH 45

1.3M N JCT USH 41 TO N, Washington, WI

Built 1973 ADT: 35,000

LRD WESTERN AVE

Unknown

Over: USH 45

0.8M N JCT STH 145, Washington, WI

Built 1984 ADT: 29,200

USH 45 SB

Unknown

Over: LRD SHERMAN RD

1.9M E JCT USH 41, Washington, WI

Built 1989 ADT: 3,300

USH 45 NB

Unknown

Over: LRD SHERMAN RD

2.0M E JCT USH 41, Washington, WI

Built 1985 ADT: 3,100

USH 45 SB

Unknown

Over: STH 60

3.3M E JCT USH 41, Washington, WI

Built 1989 ADT: 15,700

USH 45 NB

Unknown

Over: STH 60

3.4M E JCT USH 41, Washington, WI

Built 1984 ADT: 16,900

CTH C

Unknown

Over: USH 45

1.0M N JCT STH 60, Washington, WI

Built 1984 ADT: 36,900

CTH PV

Unknown

Over: USH 45

1.0M N JCT CTH C, Washington, WI

Built 1985 ADT: 37,600

LRD MILEVIEW RD

Unknown

Over: USH 45

2.5M N JCT CTH C, Washington, WI

Built 1984 ADT: 33,400

CTH NN

Unknown

Over: USH 45

3.0M N JCT CTH C, Washington, WI

Built 1984 ADT: 33,400

USH 45 SB

Unknown

Over: LRD PARADISE DR

2.3M E JCT CTH Z, Washington, WI

Built 1989 ADT: 28,000

USH 45 NB

Unknown

Over: LRD PARADISE DR

2.3M E JCT CTH Z, Washington, WI

Built 1985 ADT: 28,000

USH 45 SB

Unknown

Over: LRD 18TH AVE

1.8M E JCT CTH Z, Washington, WI

Built 1989 ADT: 5,800

USH 45 NB

Unknown

Over: LRD 18TH AVE

1.6M N JCT CTH NN, Washington, WI

Built 1985 ADT: 5,800

LRD DECORAH ROAD

Unknown

Over: USH 45

2.2M N JCT CTH NN, Washington, WI

Built 1986 ADT: 33,200

LRD CHESTNUT STREE

Unknown

Over: USH 45

3.1M N JCT CTH NN, Washington, WI

Built 1985 ADT: 33,200

USH 45 SB

Unknown

Over: STH 33-STH 144

0.4M E JCT CTH B, Washington, WI

Built 1989 ADT: 18,500

USH 45 NB

Unknown

Over: STH 33-STH 144

0.5M E JCT CTH B, Washington, WI

Built 1985 ADT: 18,500

Showing 2,551-2,600 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.