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

STH 29

Fair

Over: CADY CREEK

1.2M E JCT STH 128 TO N, St. Croix, WI

Built 1979 Load: 32.4 t ADT: 1,600

USH 12

Fair

Over: EAU GALLE RIVER

2.5M E JCT CTH B, St. Croix, WI

Built 1987 Load: 32.4 t ADT: 1,700

LRD 140TH AVE

Fair

Over: DRAINAGE WAY

1.1M E JCT STH 65, St. Croix, WI

Built 1994 Load: 32.4 t ADT: 301

STH 13

Fair

Over: LITTLE BLACK RIVER

2.7M N JCT CTH A, Taylor, WI

Built 1968 Load: 32.4 t ADT: 7,100

CTH T

Fair

Over: MCKENZIE CREEK

0.3M N JCT CTH A TO WEST, Taylor, WI

Built 1990 Load: 32.4 t ADT: 502

STH 64-STH 73

Fair

Over: YELLOW RIVER

0.3M E JCT STH 73 TO N, Taylor, WI

Built 1997 Load: 32.4 t ADT: 1,600

CTH M

Fair

Over: E BR LITTLE BLACK RIVER

1.8M W JCT CTH C, Taylor, WI

Built 2004 Load: 32.4 t ADT: 471

LRD TIMBER DR

Fair

Over: E. BR. LITTLE BLACK RIVE

2.0M S JCT CTH M, Taylor, WI

Built 2002 Load: 32.4 t ADT: 53

LRD PINEWOOD DR

Fair

Over: N FK EAU CLAIRE RIVER

2.5M E JCT STH 73, Taylor, WI

Built 1978 Load: 32.4 t ADT: 81

LRD BIRCH DR (DEAD

Fair

Over: PINE CREEK

0.1M S JCT CTH A, Taylor, WI

Built 1977 Load: 32.4 t ADT: 25

USH 53

Fair

Over: BR KING CREEK

1.8M N JCT CTH E, Trempealeau, WI

Built 1949 Load: 32.4 t ADT: 2,700

USH 53

Fair

Over: BEAR CREEK

3.7M N JCT CTH D, Trempealeau, WI

Built 1966 Load: 32.4 t ADT: 3,700

STH 121

Fair

Over: SPORT VALLEY CREEK

0.1M E JCT CTH V, Trempealeau, WI

Built 1980 Load: 32.4 t ADT: 930

CTH D 5TH AVE

Fair

Over: BUFFALO RIVER

0.1M S JCT USH 10, Trempealeau, WI

Built 1979 Load: 32.4 t ADT: 3,363

LRD PETERSON RD

Fair

Over: BUFFALO RIVER

0.1M S JCT USH 10, Trempealeau, WI

Built 1982 Load: 32.4 t ADT: 93

USH 53

Fair

Over: KING CREEK

0.7M N JCT CTH E, Trempealeau, WI

Built 1987 Load: 32.4 t ADT: 2,900

STH 95

Fair

Over: LAKES COULEE CREEK

3.5M E JCT CTH D, Trempealeau, WI

Built 1999 Load: 32.4 t ADT: 1,900

STH 93

Fair

Over: TREMPEALEAU RIVER

1.2M N JCT STH 95, Trempealeau, WI

Built 1995 Load: 32.4 t ADT: 6,300

CTH X

Fair

Over: BR TRAVERSE VALLEY CREEK

1.1M N JCT STH 93, Trempealeau, WI

Built 1998 Load: 32.4 t ADT: 542

CTH E

Fair

Over: BR ELK CREEK

0.6M N JCT CTH OO, Trempealeau, WI

Built 2000 Load: 32.4 t ADT: 385

CTH XX

Fair

Over: WICKHAM VALLEY CREEK

2.3M N JCT STH 93, Trempealeau, WI

Built 2003 Load: 32.4 t ADT: 159

STH 35 - STH 54

Fair

Over: TAMARACK CREEK

2.0M N JCT CTH F, Trempealeau, WI

Built 1951 Load: 32.4 t ADT: 7,000

LRD PRAIRIE RD EAS

Fair

Over: BR BUFFALO RIVER

1.3M S JCT USH 10, Trempealeau, WI

Built 1985 Load: 32.4 t ADT: 46

LRD TRUMP COULEE R

Fair

Over: N FK BEAVER CREEK

0.3M N JCT CTH C, Trempealeau, WI

Built 1986 Load: 32.4 t ADT: 29

USH 14

Fair

Over: TRIB TO DAY CREEK

2.0M E JCT STH 131 TO N, Vernon, WI

Built 1948 Load: 32.4 t ADT: 1,900

USH 14

Fair

Over: BR DAY CREEK

2.5M E JCT STH 131 TO N, Vernon, WI

Built 1948 Load: 32.4 t ADT: 1,900

USH 14

Fair

Over: BR DAY CREEK

3.0M E JCT STH 131 TO N, Vernon, WI

Built 1948 Load: 32.4 t ADT: 1,900

USH 14-USH 61

Fair

Over: SPRING VALLEY CREEK

0.1M E JCT CTH T, Vernon, WI

Built 1949 Load: 32.4 t ADT: 3,300

USH 61-STH 131

Fair

Over: READS CREEK

3.9M N JCT STH 131 TO S, Vernon, WI

Built 1967 Load: 32.4 t ADT: 2,800

STH 82

Fair

Over: ROCKY RUN

0.7M E JCT CTH S, Vernon, WI

Built 1959 Load: 32.4 t ADT: 1,100

CTH K

Fair

Over: N CHIPMUNK COULEE CREEK

1.7M E JCT STH 35, Vernon, WI

Built 1975 Load: 32.4 t ADT: 2,387

STH 33

Fair

Over: BR S FK BARABOO RIVER

3.0M E JCT CTH V, Vernon, WI

Built 1981 Load: 32.4 t ADT: 580

CTH B

Fair

Over: SPRINGVILLE BRANCH

1.5M S JCT CTH Y, Vernon, WI

Built 1983 Load: 32.4 t ADT: 759

USH 14-USH 61-STH

Fair

Over: BR COON CREEK

0.1M E JCT STH 162 TO S, Vernon, WI

Built 1990 Load: 32.4 t ADT: 5,600

LRD VALLEY AVE

Fair

Over: WARNER CREEK

0.2M S JCT CTH P, Vernon, WI

Built 1990 Load: 32.4 t ADT: 90

CTH F

Fair

Over: HILLS CREEK

1.6M W JCT CTH WW, Vernon, WI

Built 1991 Load: 32.4 t ADT: 620

STH 80

Fair

Over: BR BEAVER CREEK

1.5M N JCT CTH V, Vernon, WI

Built 1994 Load: 32.4 t ADT: 1,300

CTH B

Fair

Over: SPRINGVILLE BRANCH

1.8M S JCT CTH Y, Vernon, WI

Built 1992 Load: 32.4 t ADT: 910

CTH P

Fair

Over: COON CREEK

0.1M W JCT CTH G, Vernon, WI

Built 1992 Load: 32.4 t ADT: 510

LRD KNUDSON LANE (

Fair

Over: COON CREEK

0.2M E JCT STH 162, Vernon, WI

Built 1992 Load: 32.4 t ADT: 20

CTH P

Fair

Over: WARNER CREEK

2.0M E JCT STH 131, Vernon, WI

Built 1997 Load: 32.4 t ADT: 217

STH 82

Fair

Over: DESOTO CREEK

1.2M E JCT STH 35 TO N, Vernon, WI

Built 1998 Load: 32.4 t ADT: 510

CTH D

Fair

Over: MID BEAR CREEK

0.1M W JCT CTH MM, Vernon, WI

Built 1974 Load: 32.4 t ADT: 217

LRD STILLWELL RD

Fair

Over: COX CREEK

0.2M S JCT STH 56, Vernon, WI

Built 1980 Load: 32.4 t ADT: 94

LRD MAPLEDALE RD

Fair

Over: BR BISHOP BRANCH

2.1M N JCT STH 56, Vernon, WI

Built 1950 Load: 32.4 t ADT: 205

USH 51

Fair

Over: MANITOWISH RIVER

1.2M N JCT CTH W, Vilas, WI

Built 1956 Load: 32.4 t ADT: 2,400

LRD RANGE LINE RD

Fair

Over: DEERSKIN RIVER

2.3M N JCT STH 70, Vilas, WI

Built 1984 Load: 32.4 t ADT: 1,161

CTH ES

Fair

Over: HONEY CREEK

0.3M E JCT CTH N, Walworth, WI

Built 1949 Load: 32.4 t ADT: 1,900

CTH X

Fair

Over: BR LITTLE TURTLE CREEK

0.8M W JCT CTH C, Walworth, WI

Built 1958 Load: 32.4 t ADT: 2,100

CTH N

Fair

Over: HONEY CREEK

0.2M N JCT CTH ES, Walworth, WI

Built 1977 Load: 32.4 t ADT: 1,100

Showing 5,751-5,800 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.