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%.

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.

All Bridges in Wisconsin

LRD CLOVERDALE RD

Structurally Deficient

Over: BR BLACK RIVER

1.9M W JCT STH 73, Clark, WI

Built 1965 Load: 11.3 t ADT: 25

LRD W. BOUNDARY RO

Structurally Deficient

Over: SANDY CREEK

0.3M N JCT STH 170, Dunn, WI

Built 1975 Load: 11.3 t ADT: 138

USH 8

Structurally Deficient

Over: POKEGAMA CREEK

45°24'29.4"N 91°39'37.7, Barron, WI

Load: 13.0 t ADT: 58

LRD 20TH AVENUE PI

Structurally Deficient

Over: HAY CREEK

0.4 M E OF 295TH ST, Chippewa, WI

Built 1938 Load: 13.0 t ADT: 175

LRD BADGER RD

Structurally Deficient

Over: SAWMILL CREEK

1.3M N JCT CTH A, Green, WI

Built 1941 Load: 13.0 t ADT: 105

CTH L

Structurally Deficient

Over: BLACK CREEK

0.9M W JCT CTH M, Marathon, WI

Built 1958 Load: 13.0 t ADT: 723

LRD ORILEY RD

Structurally Deficient

Over: TURTLE CREEK

2.0M N JCT CTH X, Rock, WI

Built 1963 Load: 13.0 t ADT: 293

LRD ROBIN RD

Structurally Deficient

Over: MIDDLE BR EMBARASS RIVER

0.7M N JCT USH 45, Shawano, WI

Built 1922 Load: 13.0 t ADT: 101

LRD MEADOWLARK LAN

Structurally Deficient

Over: S BR EMBARRASS RIVER

0.2M S JCT STH 29, Shawano, WI

Built 1910 Load: 13.0 t ADT: 50

LRD EVENSTAD RD (D

Structurally Deficient

Over: WEISTER CREEK

0.1M S JCT CTH P, Vernon, WI

Built 1940 Load: 13.0 t ADT: 10

LRD ELLEFSON RD

Structurally Deficient

Over: HORNBY CR/S FK BAD AXE R

0.8M N JCT CTH NN, Vernon, WI

Built 1980 Load: 13.0 t ADT: 23

LRD SUGARBUSH TRAI

Structurally Deficient

Over: SUGARBUSH CREEK

1.1M E JCT 47, Vilas, WI

Built 1940 Load: 13.6 t ADT: 101

STH 22

Structurally Deficient

Over: EMBARRASS RIVER

44°41'31.8"N 88°42'03.3, Shawano, WI

Load: 14.0 t ADT: 40

CTH TT

Structurally Deficient

Over: MAUNESHA RIVER

1.7M N JCT STH 19, Dane, WI

Built 1961 Load: 14.6 t ADT: 690

LRD GRAVEL PIT RD

Structurally Deficient

Over: HAY CREEK

1.1M N CTH D, Eau Claire, WI

Built 1920 Load: 14.6 t ADT: 106

LRD ROASTER RD

Structurally Deficient

Over: E PECATONICA RIVER

0.6M W JCT CTH X, Iowa, WI

Built 1969 Load: 14.6 t ADT: 208

CTH Z

Structurally Deficient

Over: BILLINGS CREEK

2.8M S JCT CTH P TO E, Monroe, WI

Built 1978 Load: 14.6 t ADT: 54

LRD OLDE ONEIDA ST

Structurally Deficient

Over: SOUTH CANAL

0.6M N JCT USH 10, Outagamie, WI

Built 1917 Load: 14.6 t ADT: 2,972

LRD LATHERS RD

Structurally Deficient

Over: TURTLE CREEK

0.1M N JCT CTH S, Rock, WI

Built 1887 Load: 14.6 t ADT: 474

LRD DUCK CREEK RD

Structurally Deficient

Over: BR KICKAPOO RIVER

1.4M S JCT CTH SS, Vernon, WI

Built 1950 Load: 14.6 t ADT: 23

LRD BURNIKEL RD

Structurally Deficient

Over: CLAM RIVER

2.8M E JCT STH 35, Burnett, WI

Built 1929 Load: 16.2 t ADT: 47

LRD FREMONT RD

Structurally Deficient

Over: S BR ONEILL CREEK

2.0M W JCT USH 10, Clark, WI

Built 1976 Load: 16.2 t ADT: 116

LRD MILL ST

Structurally Deficient

Over: UNION PACIFIC RR

0.1M W JCT STH 60, Columbia, WI

Built 1900 Load: 16.2 t ADT: 79

STH 64-STH 107-W M

Structurally Deficient

Over: WISCONSIN RIVER 39

3.4M E JCT CTH E, Lincoln, WI

Built 1927 Load: 16.2 t ADT: 6,200

LRD 1ST AVE

Structurally Deficient

Over: BIG HAY MEADOW CREEK

1.0M E JCT CTH X, Lincoln, WI

Built 1917 Load: 16.2 t ADT: 75

LRD PLEASANT RD

Structurally Deficient

Over: E BR YELLOW RIVER

1.5M S JCT STH 13, Marathon, WI

Built 1947 Load: 16.2 t ADT: 132

LRD GLADE AVE

Structurally Deficient

Over: BR BURGHARDT CREEK

0.1M W JCT CTH B, Pierce, WI

Built 1934 Load: 16.2 t ADT: 40

LRD SCHOOL HOUSE R

Structurally Deficient

Over: N BR EMBARRASS RIVER

1.7 M E JCT CTH D, Shawano, WI

Built 1920 Load: 16.2 t ADT: 120

CTH A

Structurally Deficient

Over: PINE CREEK

1.3M W JCT CTH E, Taylor, WI

Built 1970 Load: 16.2 t ADT: 640

TRNG/LOGGING TRAIL

Structurally Deficient

Over: SILVER CREEK

TRNG AREA B4-MGRS 840686, Monroe, WI

Built 1999 Load: 16.8 t ADT: 2

CTH MN

Structurally Deficient

Over: DOOR CREEK

2.7M S JCT USH 12, Dane, WI

Built 1921 Load: 17.8 t ADT: 2,600

LRD SPRING RD

Structurally Deficient

Over: BR YAHARA RIVER

0.7M S JCT CTH B, Dane, WI

Built 1930 Load: 17.8 t ADT: 58

LRD WILDCAT RD

Structurally Deficient

Over: WILDCAT CREEK

0.3M W JCT STH 67, Dodge, WI

Built 1976 Load: 17.8 t ADT: 146

LRD S EDDY ST

Structurally Deficient

Over: UP RR

0.8M N JCT USH B12, Eau Claire, WI

Built 1967 Load: 17.8 t ADT: 2,141

LRD SOPER RD (CLOS

Structurally Deficient

Over: N BR OCONTO RIVER

0.5M E JCT STH 32, Forest, WI

Built 1917 Load: 17.8 t

IRR BIA RTE 10

Structurally Deficient

Over: FLAMBEAU BEAR RIVER

6KM NW OF LAC DU FLAMBEAU, Iron, WI

Built 1932 Load: 17.8 t ADT: 50

CTH M

Structurally Deficient

Over: FENWOOD CREEK

1.2M N JCT CTH P, Marathon, WI

Built 1938 Load: 17.8 t ADT: 282

LRD E TOWN LINE RD

Structurally Deficient

Over: LITTLE THORNAPPLE RIVER

1.1M W JCT STH 27 #61, Rusk, WI

Built 1940 Load: 17.8 t ADT: 20

LRD NORWAY CT (DEA

Structurally Deficient

Over: BR SUAMICO RIVER

1.2M W JCT CTH B, Brown, WI

Built 1976 Load: 19.4 t ADT: 20

CTH H

Structurally Deficient

Over: S BR MANITOWOC RIVER

2.6M E JCT CTH C, Calumet, WI

Built 1968 Load: 19.4 t ADT: 880

LRD LAKE SHORE DR

Structurally Deficient

Over: MUD CREEK

0.5 NORTH OF MUD CREEK RD, Calumet, WI

Built 1959 Load: 19.4 t ADT: 30

LRD 83RD STREET/OL

Structurally Deficient

Over: DUNCAN CREEK

0.3 M N CTH SS, Chippewa, WI

Built 2000 Load: 19.4 t ADT: 200

LRD 25TH AVENUE

Structurally Deficient

Over: SWAN CREEK

0.35 M E 350TH STREET, Chippewa, WI

Built 2002 Load: 19.4 t ADT: 65

LRD 290TH STREET

Structurally Deficient

Over: LOTZ CREEK

0.7 M N 70TH AVENUE, Chippewa, WI

Built 1970 Load: 19.4 t ADT: 115

LRD ROMADKA AVE

Structurally Deficient

Over: MID BR ONEILL CREEK

1.3M S JCT CTH H, Clark, WI

Built 1966 Load: 19.4 t ADT: 185

LRD DAENTL RD (DEA

Structurally Deficient

Over: TOKEN CREEK

0.6M W JCT USH 51, Dane, WI

Built 1960 Load: 19.4 t ADT: 50

CTH K

Structurally Deficient

Over: BR OTTER CREEK

0.4M N CTH HH TO E, Eau Claire, WI

Built 1981 Load: 19.4 t ADT: 256

LRD WALNUT RD

Structurally Deficient

Over: SHEBOYGAN RIVER

0.1M W JCT CTH W, Fond du Lac, WI

Built 1961 Load: 19.4 t ADT: 48

LRD MCKINLEY ST

Structurally Deficient

Over: MOSHER CREEK

0.3M E JCT PROSPECT AVENU, Fond du Lac, WI

Built 1950 Load: 19.4 t ADT: 1,100

LRD SUPERIOR DR

Structurally Deficient

Over: BR E BR ROCK RIVER

0.2M E JCT CTH H, Fond du Lac, WI

Built 1930 Load: 19.4 t ADT: 58

Showing 14,701-14,750 of 14,851 bridges

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.