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 60

Fair

Over: DRY RUN

7.7M E JCT STH 131 TO N, Crawford, WI

Built 1999 Load: 32.4 t ADT: 2,700

LRD SUGARLOAF TRAI

Fair

Over: UNNAMED STREAM

0.1M N OF JCT STH 18, Crawford, WI

Built 2003 Load: 32.4 t ADT: 1

USH 18/STH 35/STH

Fair

Over: DRAINAGE CHANNEL

AT OLD 18 ROAD INT, Crawford, WI

Built 2016 Load: 32.4 t ADT: 6,600

LRD PLUM RUN ROAD

Fair

Over: PLUM RUN CREEK

1.3M E OF CTH X, Crawford, WI

Built 2010 Load: 32.4 t ADT: 102

LRD ZAJICEK DR. (D

Fair

Over: BEAR CREEK

0.1M S JCT CTH X, Crawford, WI

Built 1966 Load: 32.4 t ADT: 10

IH 90-IH 94

Fair

Over: TOKEN CREEK

1.5M E JCT STH 19 TO E, Dane, WI

Built 1959 Load: 32.4 t ADT: 69,000

USH 51

Fair

Over: TOKEN CREEK

0.2M N JCT IH 90 TO E, Dane, WI

Built 1960 Load: 32.4 t ADT: 19,300

IH 39/90/94

Fair

Over: STARKWEATHER CREEK

0.9M S JCT USH 151 TO N, Dane, WI

Built 1959 Load: 32.4 t ADT: 109,000

USH 12/18

Fair

Over: BR YAHARA RIVER

1.1M E JCT USH 51, Dane, WI

Built 1962 Load: 32.4 t ADT: 86,700

USH 12-USH 18

Fair

Over: DOOR CREEK

0.9M E JCT CTH AB (A), Dane, WI

Built 1961 Load: 32.4 t ADT: 14,200

USH 12/18 EB-S BEL

Fair

Over: YAHARA RIVER

1.7M E JCT CTH MC, Dane, WI

Built 1988 Load: 32.4 t ADT: 62,000

USH 12/18 WB-S BEL

Fair

Over: YAHARA RIVER

1.5M W JCT USH 51 TO N, Dane, WI

Built 1988 Load: 32.4 t ADT: 62,000

USH 12/18

Fair

Over: DRAINAGE DITCH

0.2M E JCT USH 51 TO S, Dane, WI

Built 1987 Load: 32.4 t ADT: 86,700

CTH D

Fair

Over: NINE SPRINGS CREEK

1.0M S JCT USH 12, Dane, WI

Built 1974 Load: 32.4 t ADT: 27,400

LRD SYCAMORE AVE

Fair

Over: STARKWEATHER CREEK

0.7M N JCT STH 30, Dane, WI

Built 1978 Load: 32.4 t ADT: 6,800

USH 51

Fair

Over: SAUNDERS CREEK

1.0M N JCT IH 90 TO W, Dane, WI

Built 1991 Load: 32.4 t ADT: 4,800

USH 51-STOUGHTON R

Fair

Over: STARKWEATHER CREEK

0.3M N JCT STH 30, Dane, WI

Built 1992 Load: 32.4 t ADT: 23,500

USH 18-USH 151

Fair

Over: TRIB BADGER MILL CREEK

0.2M E JCT STH 69 TO S, Dane, WI

Built 1994 Load: 32.4 t ADT: 26,700

STH 69

Fair

Over: TRIB BADGER MILL CREEK

3.7M N JCT CTH PB TO S, Dane, WI

Built 1994 Load: 32.4 t ADT: 6,200

USH 18 & USH 151

Fair

Over: TRIB BADGER MILL CREEK

0.4M E JCT STH 69 TO S, Dane, WI

Built 1994 Load: 32.4 t ADT: 27,500

USH 18-USH 151 EB

Fair

Over: BADGER MILL CREEK

1.2M E JCT CTH PB, Dane, WI

Built 1994 Load: 32.4 t ADT: 31,200

USH 18-USH 151 EB/

Fair

Over: BADGER MILL CREEK

1.6M E JCT CTH PB, Dane, WI

Built 1995 Load: 32.4 t ADT: 33,000

LRD NORTHERN LIGHT

Fair

Over: BR. BADGER MILL CREEK

0.1 M W JCT NINE MOUND, Dane, WI

Built 2004 Load: 32.4 t ADT: 4,635

LRD HAIGHT FARM RD

Fair

Over: SWAN CREEK

AT SWAN CREEK, Dane, WI

Built 2015 Load: 32.4 t ADT: 1,400

USH 51

Fair

Over: UNNAMED WATERWAY

3.3 M N JCT STH 138, Dane, WI

Built 2016 Load: 32.4 t ADT: 11,500

CTH PD

Fair

Over: BADGER MILL CREEK

1.1 MILE E JCT CTH M, Dane, WI

Built 1993 Load: 32.4 t ADT: 10,400

CTH MS / UNIVERSIT

Fair

Over: SPRING HARBOR STORM

1.0M E JCT CTH Q, Dane, WI

Built 1964 Load: 32.4 t ADT: 29,600

LRD PARK ST

Fair

Over: PHEASANT BRANCH CREEK

0.4M S JCT CTH M, Dane, WI

Built 1962 Load: 32.4 t ADT: 2,500

CTH PB

Fair

Over: BR SUGAR RIVER

0.2M S JCT CTH A, Dane, WI

Built 1984 Load: 32.4 t ADT: 4,700

STH 33-STATE ST

Fair

Over: FOX LAKE OUTLET

1.8M E JCT CTH A TO N, Dodge, WI

Built 1964 Load: 32.4 t ADT: 9,700

STH 16

Fair

Over: SILVER CREEK

1.9M E JCT CTH Q, Dodge, WI

Built 1960 Load: 32.4 t ADT: 6,300

LRD ELMWOOD RD

Fair

Over: ROCK RIVER

1.8M E JCT CTH R, Dodge, WI

Built 1969 Load: 32.4 t ADT: 117

CTH TW MAIN ST

Fair

Over: E BR ROCK RIVER

0.3M W JCT CTH Y, Dodge, WI

Built 1972 Load: 32.4 t ADT: 2,215

LRD JEFFERSON RD

Fair

Over: RUBICON RIVER

0.5M N JCT CTH NN, Dodge, WI

Built 1979 Load: 32.4 t ADT: 176

LRD GILL RD

Fair

Over: E BR ROCK RIVER

0.5M E JCT CTH Y, Dodge, WI

Built 1981 Load: 32.4 t ADT: 99

LRD DOHRMAN RD

Fair

Over: EAST BR ROCK RIVER

0.3M N JCT CTH TW, Dodge, WI

Built 1984 Load: 32.4 t ADT: 366

STH 67-STH 175

Fair

Over: KUMMEL CREEK

0.4M N JCT STH 28 TO E, Dodge, WI

Built 1989 Load: 32.4 t ADT: 2,700

STH 67

Fair

Over: HEPP CREEK

0.3M N JCT STH 60, Dodge, WI

Built 1993 Load: 32.4 t ADT: 3,100

IH 41

Fair

Over: BR E BR ROCK RIVER

0.7M N JCT STH 28 TO W, Dodge, WI

Built 1994 Load: 32.4 t ADT: 34,200

CTH A

Fair

Over: CAMBRA CREEK

0.7M S JCT CTH F, Dodge, WI

Built 1966 Load: 32.4 t ADT: 2,500

LRD AUSTIN RD

Fair

Over: MUD CREEK

0.8M W JCT CTH BB, Dodge, WI

Built 1973 Load: 32.4 t ADT: 47

CTH J

Fair

Over: STONEY CREEK

0.9M W JCT CTH S, Door, WI

Built 1987 Load: 32.4 t ADT: 212

STH 57 NB

Fair

Over: FABRY CR

2.2 MI N OF CO LINE, Door, WI

Built 2008 Load: 32.4 t ADT: 10,800

USH 53-E 2ND ST

Fair

Over: LSTT RR

0.9M N JCT USH 2 TO W, Douglas, WI

Built 1962 Load: 32.4 t ADT: 18,400

USH 53-E 2ND ST

Fair

Over: SOO LINE

0.8M N JCT USH 2 TO W, Douglas, WI

Built 1962 Load: 32.4 t ADT: 18,400

USH 2

Fair

Over: AMNICON RIVER

5.8M E JCT STH 13 TO S, Douglas, WI

Built 1984 Load: 32.4 t ADT: 6,800

STH 13

Fair

Over: TRASK CREEK

0.3M N JCT CTH H, Douglas, WI

Built 1986 Load: 32.4 t ADT: 600

CTH G

Fair

Over: TOTAGATIC RIVER

5.8M N JCT STH 77, Douglas, WI

Built 1988 Load: 32.4 t ADT: 354

USH 2-USH 53-E 2ND

Fair

Over: NEMADJI RIVER

2.4M E JCT USH 53 TO N, Douglas, WI

Built 1989 Load: 32.4 t ADT: 23,300

CTH S

Fair

Over: BOIS BRULE RIVER

6.2M S JCT CTH B, Douglas, WI

Built 2002 Load: 32.4 t ADT: 451

Showing 5,301-5,350 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.