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 USH 51-IH 39 NB

Unknown

Over: LRD HOGAN RD

0.1M W JCT CTH CX, Columbia, WI

Built 1966 ADT: 280

IH 39 SB - USH 51

Unknown

Over: LRD HOGAN RD

0.1M W JCT CTH CX, Columbia, WI

Built 1966 ADT: 280

LRD GROTZKE RD

Unknown

Over: IH USH 51-IH 39

3.2M N JCT STH 78 TO S, Columbia, WI

Built 1966 ADT: 15,800

STH 22-WASHINGTON

Unknown

Over: STH 16

5.0M E JCT USH 51 TO S, Columbia, WI

Built 1969 ADT: 3,700

USH 151 NB

Unknown

Over: STH 73

2.5M N JCT CTH V, Columbia, WI

Built 1991 ADT: 1,600

USH B151-STH 73

Unknown

Over: USH 151

4.4M N JCT CTH V (S), Columbia, WI

Built 1991 ADT: 22,700

CTH K WESTERN AV

Unknown

Over: USH 151

0.5M N JCT STH 73 (S), Columbia, WI

Built 1976 ADT: 24,500

USH 151 NB

Unknown

Over: LRD MAPLE AVE

1.1M W JCT STH 16, Columbia, WI

Built 1991 ADT: 342

USH 151 NB

Unknown

Over: STH 16-STH 60

2.9M E JCT CTH D, Columbia, WI

Built 1991 ADT: 12,600

USH 151 SB

Unknown

Over: STH 16-STH 60

2.8M E JCT CTH D, Columbia, WI

Built 1976 ADT: 12,600

LRD OLD HWY 73 RD

Unknown

Over: USH 151

1.8M N JCT STH 16 TO E, Columbia, WI

Built 1976 ADT: 22,700

USH 151 SB

Unknown

Over: STH 73

1.6M N JCT CTH V (S), Columbia, WI

Built 1991 ADT: 1,600

USH 151 SB

Unknown

Over: LRD MAPLE AVE

1.2M W JCT STH 16, Columbia, WI

Built 1976 ADT: 1,500

IH 39 SB

Unknown

Over: IH 90/94 EB

2.1M E JCT STH 33 TO E, Columbia, WI

Built 1993 ADT: 21,700

IH 39

Unknown

Over: STH 78

8.0M N JCT CTH DL, Columbia, WI

Built 1993 ADT: 7,490

IH 39

Unknown

Over: RAMP STH 78N-IH 90,94 W

0.3M S JCT STH 78 TO S, Columbia, WI

Built 1993 ADT: 390

STH 78 SB

Unknown

Over: IH 90/94

2.3M E JCT STH 33 TO E, Columbia, WI

Built 1993 ADT: 43,400

IH STH 78/IH 39

Unknown

Over: IH 90/94

2.4M E JCT STH 33 TO E, Columbia, WI

Built 1994 ADT: 43,400

IH NB IH 39

Unknown

Over: STH 16

0.1M E JCT STH 127, Columbia, WI

Built 1999 ADT: 7,700

IH 39 SB

Unknown

Over: STH 16

0.1M E JCT STH 127, Columbia, WI

Built 1999 ADT: 7,700

CANADIAN PACIFIC R

Unknown

Over: USH 51

0.7M N JCT STH 16 TO W, Columbia, WI

Built 1998 ADT: 11,600

LRD BLACK RD

Unknown

Over: IH 39/90/94

AT BLACK RD, Columbia, WI

Built 2009 ADT: 56,800

CTH CS

Unknown

Over: IH 39/90/94

AT INTERSECTION, Columbia, WI

Built 2011 ADT: 56,800

IH 39/90/94 NB

Unknown

Over: STH 60

4.3M E JCT STH 113, Columbia, WI

Built 2023 ADT: 8,958

CMSTPP RR

Unknown

Over: STH 22-WASHINGTON ST

0.6M N JCT STH 16 TO W, Columbia, WI

Built 1941 ADT: 7,290

CNW RR

Unknown

Over: STH 60-WATER ST

0.9M E JCT CTH Y, Columbia, WI

Built 1880 ADT: 1,940

CNW RR

Unknown

Over: LRD KOWALD RD

0.9M E JCT CTH H, Columbia, WI

Built 1910 ADT: 35

CNW RR

Unknown

Over: LRD CEMETERY RD

1.3M S JCT CTH P, Columbia, WI

Built 1911 ADT: 150

CNW RR

Unknown

Over: LRD TOWN RD

1.4M S JCT CTH P, Columbia, WI

Built 1910 ADT: 35

CMSTPP RR

Unknown

Over: LRD LOWVILLE RD

0.8M N JCT STH 16, Columbia, WI

Built 1906 ADT: 150

STH 82

Unknown

Over: MISSISSIPPI RIVER 04

AT IOWA STATE LINE, Crawford, WI

Built 1931 ADT: 99

USH 18-STH 60

Unknown

Over: LRD IA ROUTE 76

TOWN OF BRIDGEPORT, Crawford, WI

Built 1974 ADT: 2,810

USH 51 NB-STOUGHTO

Unknown

Over: LRD COTTAGE GROVE RD

0.9M E JCT CTH AB, Dane, WI

Built 1949 ADT: 26,600

WSOR

Unknown

Over: LRD SKI LANE

0.3M N JCT USH 14, Dane, WI

Built 1932 ADT: 50

USH 12/14 WB

Unknown

Over: LRD TERRACE AVE

0.1M E JCT VERONA ST, Dane, WI

Built 1949 ADT: 1,700

USH 12/18 EB-USH 1

Unknown

Over: USH 14/151

6.2M W JCT CTH MM, Dane, WI

Built 1951 ADT: 26,900

WSOR

Unknown

Over: USH 14-PARK ST

0.4M E JCT USH 12 TO E, Dane, WI

Built 1953 ADT: 14,800

USH 12/18 EB-W BEL

Unknown

Over: CTH MC (JOHN NOLEN DR.)

0.3M S JCT CTH MM, Dane, WI

Built 1952 ADT: 16,900

MILITARY RIDGE STA

Unknown

Over: CTH ID

0.2M E JCT STH 92 TO E, Dane, WI

Built 1956 ADT: 9,010

USH 18 EB-USH 151

Unknown

Over: CTH J

1.6M N JCT CTH G, Dane, WI

Built 1955 ADT: 880

USH 51 SB

Unknown

Over: LRD TAYLOR ST/ RR

0.6M N JCT CTH MN, Dane, WI

Built 1956 ADT: 819

CTH D - FISH HATCH

Unknown

Over: USH 12/14/18/151

2.7M E JCT USH 18 TO W, Dane, WI

Built 1959 ADT: 127,000

IH 39 SB/90 EB/94

Unknown

Over: LRD CUBA VALLEY RD

1.9M E JCT CTH I, Dane, WI

Built 1960 ADT: 566

IH 39 NB IH 90 & 9

Unknown

Over: LRD CUBA VALLEY RD

1.9M E JCT CTH I, Dane, WI

Built 1960 ADT: 566

LRD RIVER RD

Unknown

Over: IH 90-IH 94

2.7M E JCT CTH V TO E, Dane, WI

Built 1960 ADT: 60,100

IH 39 SB / IH 90/9

Unknown

Over: STH 19

3.6M E JCT CTH I, Dane, WI

Built 1960 ADT: 19,300

IH 39 NB / IH 90/9

Unknown

Over: STH 19

3.6M E JCT CTH I, Dane, WI

Built 1960 ADT: 19,300

IH 39 SB / IH 90 E

Unknown

Over: USH 51

4.2M N JCT USH 151, Dane, WI

Built 1960 ADT: 24,100

IH 39 NB / IH 90 W

Unknown

Over: USH 51

4.2M N JCT USH 151, Dane, WI

Built 1960 ADT: 99

LRD HOEPKER RD

Unknown

Over: IH 90-IH 94

1.4M E JCT USH 51 TO S, Dane, WI

Built 1960 ADT: 72,200

Showing 351-400 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.