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

USH 51 SB

Unknown

Over: STH 64

1.8M E JCT USH 51 BUS, Lincoln, WI

Built 1975 ADT: 8,500

CTH G

Unknown

Over: USH 51

1.3M N JCT STH 64 TO E, Lincoln, WI

Built 1975 ADT: 15,000

LRD POPE RD

Unknown

Over: USH 51

2.6M N JCT STH 64 TO E, Lincoln, WI

Built 1975 ADT: 14,700

CTH K

Unknown

Over: USH 51 N

2.9M N JCT STH 64 TO E, Lincoln, WI

Built 1975 ADT: 10,800

USH 51 NB

Unknown

Over: LRD CENTER RD

0.1M W JCT CTH W, Lincoln, WI

Built 1974 ADT: 720

USH 51 SB

Unknown

Over: LRD CENTER RD

0.1M W JCT CTH W, Lincoln, WI

Built 1974 ADT: 720

LRD NORTH STAR ROA

Unknown

Over: USH 51

1.7M N CTH K, Lincoln, WI

Built 2013 ADT: 10,800

LRD CRASS ROAD

Unknown

Over: USH 51

1.2M N JCT CTH S, Lincoln, WI

Built 1983 ADT: 10,600

USH 51 NB

Unknown

Over: LRD KAPHAEM ROAD

TOWN OF BRADLEY, Lincoln, WI

Built 2000 ADT: 250

USH 51 SB

Unknown

Over: LRD KAPHAEM RD

AT JCT WITH USH 51, Lincoln, WI

Built 1983 ADT: 250

STH 86

Unknown

Over: USH 51

AT JCT WITH STH 86, Lincoln, WI

Built 1983 ADT: 10,300

USH 51 NB

Unknown

Over: LRD KINGS RD

AT JCT WITH USH 51, Lincoln, WI

Built 2000 ADT: 100

USH 51 SB

Unknown

Over: LRD WISCONSIN RIVER / KI

AT JCT WITH USH 51, Lincoln, WI

Built 1983 ADT: 100

CTH A

Unknown

Over: USH 51

1.8M N JCT STH 86, Lincoln, WI

Built 1999 ADT: 11,900

LRD NIBLER ROAD

Unknown

Over: USH 51 NB

4.8M N JCT STH 86, Lincoln, WI

Built 2000 ADT: 5,250

LRD NIBLER ROAD

Unknown

Over: USH 51 SB

1.5M S JCT USH 8, Lincoln, WI

Built 1983 ADT: 5,950

USH 51 NB

Unknown

Over: USH 8

2.5M E JCT USH 51 TO N, Lincoln, WI

Built 2000 ADT: 6,300

USH 51 SB

Unknown

Over: USH 8

2.6M E JCT USH 51 TO N, Lincoln, WI

Built 1983 ADT: 3,800

CTH K-CENTER AVE

Unknown

Over: WISCONSIN RIVER 37

AT CTH K, Lincoln, WI

Built 1996 ADT: 250

USH 51 SB

Unknown

Over: CTH S

TOWN OF SKANAWAN, Lincoln, WI

Built 2000 ADT: 1,500

USH 51 NB

Unknown

Over: CTH S

TOWN OF SKANAWAN, Lincoln, WI

Built 2000 ADT: 1,500

USH 51 NB

Unknown

Over: CTH H

TOWN OF ROCK FALLS, Lincoln, WI

Built 1996 ADT: 190

USH 51 SB

Unknown

Over: CTH H

TOWN OF ROCK FALLS, Lincoln, WI

Built 1996 ADT: 140

WISC. CENTRAL

Unknown

Over: CTH L

0.4M N JCT USH 8 TO W, Lincoln, WI

Built 1934 ADT: 7,000

LRD S CLEVELAND RD

Unknown

Over: IH 43 NB

7.8M N JCT STH 42, Manitowoc, WI

Built 1977 ADT: 24,400

CTH COUNTY RD XX (

Unknown

Over: IH 43

8.9M N JCT STH 42, Manitowoc, WI

Built 1977 ADT: 24,400

IH 43 SB

Unknown

Over: CTH F

1.7M W JCT CTH LS, Manitowoc, WI

Built 1977 ADT: 270

IH 43 NB

Unknown

Over: LRD NEWTON RD

0.1M W JCT CTH CR, Manitowoc, WI

Built 1979 ADT: 250

IH 43 SB

Unknown

Over: LRD WESTVIEW ROAD

0.4M N JCT CTH XX, Manitowoc, WI

Built 1977 ADT: 300

LRD FISCHER CREEK

Unknown

Over: IH 43

1.5M N JCT CTH XX, Manitowoc, WI

Built 1977 ADT: 24,400

CTH X

Unknown

Over: IH 43

2.6M N JCT CTH XX, Manitowoc, WI

Built 1977 ADT: 24,400

LRD POINT CREEK RD

Unknown

Over: IH 43

3.6M N JCT CTH XX, Manitowoc, WI

Built 1977 ADT: 22,500

IH 43 NB

Unknown

Over: CTH F

1.7M W JCT CTH LS, Manitowoc, WI

Built 1979 ADT: 270

IH 43 SB

Unknown

Over: CTH C

0.2M W JCT CTH CR, Manitowoc, WI

Built 1979 ADT: 1,700

IH 43 NB

Unknown

Over: CTH C

0.2M W JCT CTH CR, Manitowoc, WI

Built 1979 ADT: 1,700

IH 43 SB

Unknown

Over: LRD CARSTENS LAKE RD

1.0M W JCT CTH LS, Manitowoc, WI

Built 1979 ADT: 450

IH 43 NB

Unknown

Over: LRD CARSTENS LAKE RD

1.0M W JCT CTH LS, Manitowoc, WI

Built 1979 ADT: 450

IH 43 SB

Unknown

Over: LRD CLOVER RD

3.0M E JCT STH 42, Manitowoc, WI

Built 1979 ADT: 450

IH 43 NB

Unknown

Over: LRD CLOVER RD

3.0M E JCT STH 42, Manitowoc, WI

Built 1979 ADT: 450

LRD SILVER CREEK R

Unknown

Over: IH 43

9.5M N JCT CTH XX, Manitowoc, WI

Built 1978 ADT: 23,200

IH 43 NB

Unknown

Over: LRD WESTVIEW ROAD

0.4M N JCT CTH XX, Manitowoc, WI

Built 1977 ADT: 300

CTH CL VIEBAHN S

Unknown

Over: IH 43

10.5M N JCT CTH XX, Manitowoc, WI

Built 1979 ADT: 23,200

USH 151-STH 42 NB

Unknown

Over: IH 43

AT JCT USH 151, Manitowoc, WI

Built 1979 ADT: 23,400

IH 43 SB-STH 42 SB

Unknown

Over: CTH CS W CUSTER ST

2.0M E JCT USH 151, Manitowoc, WI

Built 1979 ADT: 4,000

IH 43 NB-STH 42 NB

Unknown

Over: CTH CS W CUSTER ST

2.1M E JCT USH 151, Manitowoc, WI

Built 1979 ADT: 4,000

LRD MIDDLE RD

Unknown

Over: IH 43-STH 42

1.8M N JCT USH 151, Manitowoc, WI

Built 1978 ADT: 22,900

IH 43 SB

Unknown

Over: USH 10 EB

AT IH 43 SB, Manitowoc, WI

Built 1979 ADT: 6,600

IH 43 NB

Unknown

Over: USH 10 EB

AT IH 43 NB, Manitowoc, WI

Built 1979 ADT: 6,600

LRD COUNTY LINE RD

Unknown

Over: IH 43

6.8M N JCT STH 42, Manitowoc, WI

Built 1978 ADT: 24,400

IH 43 SB

Unknown

Over: USH 10 WB-STH 310

1.1M W JCT STH 310 TO E, Manitowoc, WI

Built 1978 ADT: 5,600

Showing 1,151-1,200 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.