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

LRD HILLSIDE RD

Poor

Over: CMSTPP RR

0.8M S JCT CTH B, Walworth, WI

Built 1920 Load: 25.9 t ADT: 107

CTH HH

Poor

Over: HEMLOCK CREEK

1.3M N JCT STH 186, Wood, WI

Built 1961 Load: 25.9 t ADT: 485

LRD 29TH ST

Poor

Over: BEAVER CREEK

2.6M S JCT CTH D, Barron, WI

Built 1934 Load: 27.5 t ADT: 88

LRD 15 1/2 AVENUE

Poor

Over: LIGHTNING CREEK

0.3M E OF 4TH STREET, Barron, WI

Built 1940 Load: 27.5 t ADT: 23

LRD BIBON RD

Poor

Over: WHITE RIVER

0.6M W JCT USH 63, Bayfield, WI

Built 1984 Load: 27.5 t ADT: 76

LRD OCONNOR RD

Poor

Over: BR DUCK CREEK

0.3M E JCT CTH HS, Brown, WI

Built 1978 Load: 27.5 t ADT: 1,657

CTH XX

Poor

Over: JOHNS VALLEY CREEK

5.4M N JCT STH 88, Buffalo, WI

Built 1925 Load: 27.5 t ADT: 97

CTH H

Poor

Over: WOLF RIVER

0.2 M N 130TH AVENUE, Chippewa, WI

Built 1913 Load: 27.5 t ADT: 1,215

LRD 190TH AVENUE

Poor

Over: BRANCH DUNCAN CREEK

0.1 M W STH 64, Chippewa, WI

Built 1934 Load: 27.5 t ADT: 200

CTH A

Poor

Over: BR N FK POPPLE RIVER

1.9M E JCT CTH E, Clark, WI

Built 1951 Load: 27.5 t ADT: 568

CTH B

Poor

Over: CROOKED CREEK

1.9M S JCT USH 10, Clark, WI

Built 1924 Load: 27.5 t ADT: 208

CTH Y

Poor

Over: BLUMS CREEK

2.7M E JCT CTH KP, Dane, WI

Built 1939 Load: 27.5 t ADT: 580

LRD GOODLAND RD

Poor

Over: RUBICON RIVER

0.3M N JCT STH 60, Dodge, WI

Built 1982 Load: 27.5 t ADT: 233

LRD FARMERSVILLE R

Poor

Over: GILL CREEK

1.3M E JCT CTH Y, Dodge, WI

Built 1968 Load: 27.5 t ADT: 58

LRD MIDDLE RIVER R

Poor

Over: POPLAR RIVER

0.2M W OF CTH P, Douglas, WI

Built 1935 Load: 27.5 t ADT: 101

LRD 360TH ST (DEAD

Poor

Over: CLACK CREEK

0.3M N JCT STH 79, Dunn, WI

Built 1934 Load: 27.5 t ADT: 29

CTH V ELLIOT ST

Poor

Over: S FK LOWER PINE CREEK

0.1M S JCT CTH AA, Dunn, WI

Built 1947 Load: 27.5 t ADT: 213

CTH A

Poor

Over: PECATONICA RIVER

3.0M E JCT CTH G, Iowa, WI

Built 1939 Load: 27.5 t ADT: 650

LRD JONES BRANCH R

Poor

Over: PECATONICA RIVER

0.3M S JCT CTH J, Iowa, WI

Built 1929 Load: 27.5 t ADT: 145

LRD SECHLERVILLE R

Poor

Over: TREMPEALEAU RIVER

0.3M S JCT STH 95, Jackson, WI

Built 1979 Load: 27.5 t ADT: 135

CTH WG

Poor

Over: BR DUTCH GAP CANAL

0.6M E JCT USH 45, Kenosha, WI

Built 1941 Load: 27.5 t ADT: 5,200

CTH H

Poor

Over: COON CREEK

0.2M E JCT CTH G, La Crosse, WI

Built 1978 Load: 27.5 t ADT: 295

CTH NN

Poor

Over: MORMON CREEK

0.2M S JCT CTH M, La Crosse, WI

Built 1977 Load: 27.5 t ADT: 81

LRD GULDAN ST

Poor

Over: WILD CREEK

0.7M E JCT CTH M, Marathon, WI

Built 1967 Load: 27.5 t ADT: 90

CTH G

Poor

Over: GOOSE LAKE BRANCH CANAL

1.8M W JCT USH 45, Racine, WI

Built 1966 Load: 27.5 t ADT: 1,700

CTH MC

Poor

Over: SHEBOYGAN RIVER

0.3M S JCT STH 32, Sheboygan, WI

Built 1966 Load: 27.5 t ADT: 117

CTH A

Poor

Over: PINE CREEK

2.0M W JCT CTH E, Taylor, WI

Built 1970 Load: 27.5 t ADT: 640

LRD SWEDE VALLEY R

Poor

Over: ELK CREEK

0.2M W JCT STH 93, Trempealeau, WI

Built 1968 Load: 27.5 t ADT: 94

LRD MASON LANE

Poor

Over: BR FRENCH CREEK

0.5M W JCT CTH T, Trempealeau, WI

Built 1950 Load: 27.5 t ADT: 94

CTH VV WB (SILVER

Poor

Over: MENOMONEE RIVER

1.5M W JCT USH 45, Waukesha, WI

Built 1964 Load: 27.5 t ADT: 9,600

LRD NORWEGIAN RD

Poor

Over: ASHIPPUN RIVER

0.8M N JCT CTH CW, Waukesha, WI

Built 1929 Load: 27.5 t ADT: 98

CTH H

Poor

Over: PONY CREEK

0.1M W JCT CTH I, Waushara, WI

Built 1948 Load: 27.5 t ADT: 650

FR 2174

Poor

Over: PINE RIVER

2.8 MI W OF JCT STH 55, Forest, WI

Built 1949 Load: 28.8 t ADT: 50

STH 35

Poor

Over: SLOUGH

0.2M N JCT STH 25 TO N, Buffalo, WI

Built 1933 Load: 29.2 t ADT: 2,100

STH 35

Poor

Over: SLOUGH

1.4M N JCT STH 25 TO N, Buffalo, WI

Built 1933 Load: 29.2 t ADT: 2,100

CTH XX

Poor

Over: PAINT CREEK

0.9 M N 30TH AVENUE, Chippewa, WI

Built 1979 Load: 29.2 t ADT: 685

LRD JOHN NOLEN DR

Poor

Over: LAKE MONONA

1.2M N JCT CTH MC, Dane, WI

Built 1968 Load: 29.2 t ADT: 36,900

LRD GARETH RD (DEA

Poor

Over: POKEGAMA RIVER

2.2M N JCT CTH C, Douglas, WI

Built 1918 Load: 29.2 t ADT: 10

CTH KK

Poor

Over: OTTER CREEK

0.2M N CTH HH, Eau Claire, WI

Built 1919 Load: 29.2 t ADT: 360

CTH X

Poor

Over: ALDER CREEK

0.7M W STH 27, Eau Claire, WI

Built 1930 Load: 29.2 t ADT: 370

STH 55

Poor

Over: N BR PESHTIGO RIVER

2.5M N JCT STH 32 TO N, Forest, WI

Built 1962 Load: 29.2 t ADT: 180

CTH G

Poor

Over: BLUE RIVER

0.3M W JCT CTH Q, Grant, WI

Built 1950 Load: 29.2 t ADT: 470

LRD CLEMENT RD (DE

Poor

Over: LAWERENCE CREEK

2.0M S JCT USH 2, Iron, WI

Built 1924 Load: 29.2 t ADT: 38

STH 32-STH 57

Poor

Over: SHEBOYGAN RIVER

0.4M N JCT STH 67, Manitowoc, WI

Built 1958 Load: 29.2 t ADT: 3,200

LRD MULBERRY RD

Poor

Over: WINDING CREEK

2.6M W JCT CTH F, Marathon, WI

Built 1955 Load: 29.2 t ADT: 98

CTH P

Poor

Over: PESHTIGO RIVER

0.1M E JCT CTH P, Marinette, WI

Built 1976 Load: 29.2 t ADT: 500

LRD MARKET RD

Poor

Over: LITTLE LA CROSSE RIVER

0.7M S JCT STH 27, Monroe, WI

Built 1978 Load: 29.2 t ADT: 23

LRD 170TH ST

Poor

Over: TRADE RIVER

1.4M N JCT CTH B, Polk, WI

Built 1985 Load: 29.2 t ADT: 43

LRD W ZINDA DR

Poor

Over: ROCKY RUN CREEK

0.5M W JCT USH 10, Portage, WI

Built 1971 Load: 29.2 t ADT: 1,221

CTH O

Poor

Over: MILL CREEK

1.0M S JCT CTY P, Portage, WI

Built 1975 Load: 29.2 t ADT: 1,250

Showing 14,401-14,450 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.