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 33

Fair

Over: UPPER BRUSH CREEK

0.1M W JCT OLYMPIC AVE., Monroe, WI

Built 1930 Load: 14.6 t ADT: 1,800

LRD FRENCH RD

Fair

Over: BLACK CREEK

0.3M S JCT CTH G, Outagamie, WI

Built 1940 Load: 14.6 t ADT: 205

LRD 450TH ST

Fair

Over: BR RUSH RIVER

0.2M N JCT STH 29, Pierce, WI

Built 1920 Load: 14.6 t ADT: 34

LRD 43RD ST

Fair

Over: ROOT RIVER

1.7M N JCT CTH G, Racine, WI

Built 1967 Load: 14.6 t ADT: 1,762

LRD OPEN VIEW RD

Fair

Over: NARROWS CREEK

0.9M S JCT STH 23, Sauk, WI

Built 1974 Load: 14.6 t ADT: 143

LRD SPRUCE RD (DEA

Fair

Over: W BR RED RIVER

3.2M E JCT CTH D, Shawano, WI

Built 1920 Load: 14.6 t ADT: 20

LRD ELM RD

Fair

Over: PENSAUKEE RIVER

4.9M N JCT STH 160, Shawano, WI

Built 1920 Load: 14.6 t ADT: 200

LRD CREEK RD

Fair

Over: SILVER CREEK

0.6M W JCT CTH I, Sheboygan, WI

Built 1940 Load: 14.6 t ADT: 47

CTH C

Fair

Over: APPLE RIVER

0.1M E JCT CTH CC, St. Croix, WI

Built 1957 Load: 14.6 t ADT: 1,750

CTH Y

Fair

Over: BR RUSH RIVER

2.2M S JCT CTH N, St. Croix, WI

Built 1945 Load: 14.6 t ADT: 250

LRD HOFF VALLEY RD

Fair

Over: BRUSH CREEK

0.4M S JCT STH 33, Vernon, WI

Built 1950 Load: 14.6 t ADT: 94

LRD KNAPP VALLEY R

Fair

Over: W FK KICKAPOO RIVER

0.5M N JCT CTH P, Vernon, WI

Built 1950 Load: 14.6 t ADT: 47

FR184

Fair

Over: BAD RIVER

1.2 M. W. JCT STH 13, Ashland, WI

Built 1956 Load: 14.9 t ADT: 20

IRR BIA RTE 24

Fair

Over: WEST BRANCH RED RIVER

10 KM NE OF BOWLER, Shawano, WI

Built 1948 Load: 15.1 t ADT: 100

FR196

Fair

Over: MARENGO RIVER

5.0 M. N. JCT CTH M, Bayfield, WI

Built 1950 Load: 15.6 t ADT: 20

LRD 25TH AVE

Fair

Over: BRILL RIVER

2.7M W JCT STH 48, Barron, WI

Built 1976 Load: 16.2 t ADT: 94

CTH B

Fair

Over: BUFFALO RIVER

0.2M E JCT STH 37, Buffalo, WI

Built 1967 Load: 16.2 t ADT: 553

CTH D

Fair

Over: GILMAN VALLEY CREEK

0.2M N JCT CTH B, Buffalo, WI

Built 1928 Load: 16.2 t ADT: 303

CTH I

Fair

Over: HAY CREEK

1.5M W JCT CTH M, Clark, WI

Built 1976 Load: 16.2 t ADT: 104

LRD CATLIN AVE

Fair

Over: POPPLE RIVER

0.2M S JCT CTH A, Clark, WI

Built 1950 Load: 16.2 t ADT: 58

LRD SAND HILL AVE

Fair

Over: POPPLE RIVER

0.3M S JCT CTH A, Clark, WI

Built 1977 Load: 16.2 t ADT: 58

LRD CAWLEY AVE

Fair

Over: PANTHER CREEK

1.4M E JCT STH 73, Clark, WI

Built 1966 Load: 16.2 t ADT: 58

LRD MILLER AVE

Fair

Over: S BR ONEILL CREEK

1.3M N JCT USH 10, Clark, WI

Built 1979 Load: 16.2 t ADT: 58

LRD SHERWOOD RD

Fair

Over: E FK BLACK RIVER

0.1M E JCT STH 73, Clark, WI

Built 1959 Load: 16.2 t ADT: 92

LRD WASHINGTON ST

Fair

Over: MARAIS DE ST FERIOLE

0.5M W JCT STH 35, Crawford, WI

Built 1961 Load: 16.2 t ADT: 1,292

LRD OAK PARK RD

Fair

Over: KOSHKONONG CREEK

1.4M S JCT CTH BB, Dane, WI

Built 1951 Load: 16.2 t ADT: 1,600

CTH J

Fair

Over: PRATT CREEK

0.5M E JCT CTH KW, Dodge, WI

Built 1925 Load: 16.2 t ADT: 822

LRD SALEM RD

Fair

Over: CALAMUS CREEK

0.2M W JCT CTH S, Dodge, WI

Built 1921 Load: 16.2 t ADT: 88

CTH V

Fair

Over: HAY RIVER

0.7M W JCT CTH F, Dunn, WI

Built 1953 Load: 16.2 t ADT: 324

CTH H

Fair

Over: CHIPPEWA RIVER 03

0.4M N JCT STH 85, Dunn, WI

Built 1964 Load: 16.2 t ADT: 1,200

CTH D

Fair

Over: EAU GALLE RIVER

0.3M N JCT CTH C, Dunn, WI

Built 1969 Load: 16.2 t ADT: 526

CTH M

Fair

Over: EIGHTEEN MILE CREEK

0.05M S JCT STH 40, Dunn, WI

Built 1958 Load: 16.2 t ADT: 690

LRD 470TH AVE

Fair

Over: IRVING CREEK

0.3M W JCT CTH K, Dunn, WI

Built 1938 Load: 16.2 t ADT: 76

LRD COUNTY LINE RD

Fair

Over: ELK CREEK

1.0M W USH 12, Eau Claire, WI

Built 1978 Load: 16.2 t ADT: 205

LRD BLUFF RD

Fair

Over: SINNIPEE CREEK

1.9M W JCT USH 61, Grant, WI

Built 1949 Load: 16.2 t ADT: 107

LRD W BLUFF ST

Fair

Over: FURNACE BRANCH

0.1M E JCT STH 133, Grant, WI

Built 1965 Load: 16.2 t ADT: 940

CTH EE

Fair

Over: SILVER SCHOOL BRANCH

1.9M E JCT STH 39, Green, WI

Built 1969 Load: 16.2 t ADT: 620

LRD ULLOM RD

Fair

Over: WHITEHEAD CREEK

1.2M N JCT CTH P, Green, WI

Built 1935 Load: 16.2 t ADT: 158

LRD ADVANCE RD

Fair

Over: RICHLAND CREEK

2.4M E JCT STH 69, Green, WI

Built 1958 Load: 16.2 t ADT: 58

LRD MONTGOMERY RD

Fair

Over: RICHLAND CREEK

0.9M E JCT CTH K, Green, WI

Built 1958 Load: 16.2 t ADT: 189

LRD FIVE CORNER RD

Fair

Over: E BR RICHLAND CREEK

0.9M S JCT CTH P, Green, WI

Built 1954 Load: 16.2 t ADT: 105

CTH X

Fair

Over: SUGAR RIVER

2.3M N JCT CTH C, Green, WI

Built 1969 Load: 16.2 t ADT: 189

LRD GILROY RD

Fair

Over: W FK HALLS CREEK

1.8M S JCT CTH B, Jackson, WI

Built 1930 Load: 16.2 t ADT: 47

LRD MUENZENBERGER

Fair

Over: COON CREEK

1.8M E JCT CTH G, La Crosse, WI

Built 1947 Load: 16.2 t ADT: 94

LRD BENNETT RD

Fair

Over: GALENA RIVER

1.2M S JCT STH 11, Lafayette, WI

Built 1969 Load: 16.2 t ADT: 176

LRD DUNBARTON RD

Fair

Over: TROUT BROOK

0.1M W JCT STH 78, Lafayette, WI

Built 1929 Load: 16.2 t ADT: 88

CTH M

Fair

Over: BR PECATONICA RIVER

0.3M W JCT CTH Y, Lafayette, WI

Built 1966 Load: 16.2 t ADT: 276

LRD AXEN RD

Fair

Over: N BRANCH PRAIRIE RIVER

1.0M N JCT STH 17, Lincoln, WI

Built 1969 Load: 16.2 t ADT: 268

LRD NATZKE RD

Fair

Over: S FK COPPER RIVER

1.2M S JCT CTH M, Lincoln, WI

Built 1920 Load: 16.2 t ADT: 23

CTH B

Fair

Over: E TWIN RIVER

4.6M N JCT STH 147, Manitowoc, WI

Built 1967 Load: 16.2 t ADT: 1,100

Showing 3,001-3,050 of 14,851 bridges

Related

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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.