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

USH 10 EB

Good

Over: DRAINAGE WAY

0.5M E JCT LRD HICKORY RD, Winnebago, WI

Built 2003 Load: 32.4 t ADT: 17,400

CTH II

Good

Over: DRAINAGE WAY

3.4M E OF USH 10, Winnebago, WI

Built 2005 Load: 32.4 t ADT: 690

CTH K (W 20TH AVE)

Good

Over: BR SAWYER CREEK

1.3M W JCT IH 41, Winnebago, WI

Built 2002 Load: 32.4 t ADT: 9,700

LRD WISCONSIN STRE

Good

Over: SHARED USE PATH

AT FOX RIVER, Winnebago, WI

Built 2008 Load: 32.4 t ADT: 21,100

LRD WISCONSIN STRE

Good

Over: FOX RIVER

AT, Winnebago, WI

Built 2008 Load: 32.4 t ADT: 21,100

LRD WISCONSIN STRE

Good

Over: FOX RIVER

AT FOX RIVER, Winnebago, WI

Built 2008 Load: 32.4 t ADT: 21,100

LRD WISCONSIN STRE

Good

Over: SHARED USE PATH

AT, Winnebago, WI

Built 2008 Load: 32.4 t ADT: 21,100

IH 41

Good

Over: TRIB LAKE BUTTE DES MORT

0.3M N OF STH 45, Winnebago, WI

Built 2011 Load: 32.4 t ADT: 59,900

USH 45

Good

Over: DRAINAGE DITCH

AT DRAINAGE DITCH, Winnebago, WI

Built 2011 Load: 32.4 t ADT: 11,700

STH 116

Good

Over: UNNAMED WATERWAY

1.7 MI N OF STH 21, Winnebago, WI

Built 2016 Load: 32.4 t ADT: 1,900

STH 114-COMMERCIAL

Good

Over: FOX RIVER

1.6M E JCT USH 41 TO N, Winnebago, WI

Built 1927 Load: 32.4 t ADT: 15,400

STH 54

Good

Over: MOCCASIN CREEK

1.6M E JCT CTH G, Wood, WI

Built 1968 Load: 32.4 t ADT: 3,100

LRD SUNRISE LANE

Good

Over: ROCKY RUN CREEK

1.6M N JCT STH 73, Wood, WI

Built 1984 Load: 32.4 t ADT: 60

LRD GREEN ELM RD

Good

Over: E FK HEMLOCK CR

0.6M W JCT CTH HH, Wood, WI

Built 1986 Load: 32.4 t ADT: 50

LRD ROCK INN RD

Good

Over: MILL CREEK

1.1M S JCT USH 10, Wood, WI

Built 1987 Load: 32.4 t ADT: 91

LRD MILL CREEK DR

Good

Over: MILL CREEK

1.1M W JCT CTH E, Wood, WI

Built 1987 Load: 32.4 t ADT: 88

LRD MARSHFIELD ROA

Good

Over: MILL CREEK

0.1M E JCT CTH T, Wood, WI

Built 1991 Load: 32.4 t ADT: 50

STH 73

Good

Over: BR ROCKY RUN

0.9M N JCT STH 13 (C), Wood, WI

Built 1992 Load: 32.4 t ADT: 1,000

LRD MARSH RD

Good

Over: CRANBERRY CREEK

2.7M S JCT CTH Q, Wood, WI

Built 1994 Load: 32.4 t ADT: 10

STH 54

Good

Over: SMALL CREEK

3.9M E JCT CTH D, Wood, WI

Built 2009 Load: 32.4 t ADT: 3,100

STH 54

Good

Over: CRANBERRY DITCH

0.4M E JCT CTH GG, Wood, WI

Built 2009 Load: 32.4 t ADT: 3,100

STH 73

Good

Over: CRANBERRYCREEK

1.1M N JCT CTHF, Wood, WI

Built 2000 Load: 32.4 t ADT: 5,600

STH 80

Good

Over: BR.ROCKY RIVER RUN CREEK

1.0M S OF JCT CTH N EAST, Wood, WI

Built 2000 Load: 32.4 t ADT: 2,700

CTH C

Good

Over: LITTLE HEMLOCK CREEK

1.9 M E JCT CTH A, Wood, WI

Built 2001 Load: 32.4 t ADT: 510

CTH O

Good

Over: ALDER CREEK

0.4M S. JCT CTH DD, Wood, WI

Built 2003 Load: 32.4 t ADT: 850

CTH BB

Good

Over: BEAVER CREEK

150 FT E OF LINCOLN AVE, Wood, WI

Built 2005 Load: 32.4 t ADT: 1,200

CTH N

Good

Over: ROCKY CREEK

0.8 M E OF FALCON RD, Wood, WI

Built 2005 Load: 32.4 t ADT: 300

CTH C

Good

Over: UNNAMED TRIB. TO BEAR CR

1.5M E JCT STH 34, Wood, WI

Built 2011 Load: 32.4 t ADT: 1,500

LRD AMUNDSON RD

Good

Over: UNNAMED CREEK

0.05M NE JCT STH 173, Wood, WI

Built 2013 Load: 32.4 t ADT: 35

LRD YOUNG LANE

Good

Over: ELM CREEK

0.2M N JCT CTH Q, Wood, WI

Built 2015 Load: 32.4 t ADT: 23

LRD EAST 29TH STRE

Good

Over: UNNAMED TRIBUTARY OF MIL

0.7 M W OF STH 13, Wood, WI

Built 2018 Load: 32.4 t ADT: 2,083

LRD YELLOW RIVER R

Good

Over: YELLOW RIVER

1.8M W JCT CTH B, Wood, WI

Built 1982 Load: 32.4 t ADT: 80

CTH C

Good

Over: BR LITTLE HEMLOCK CREEK

0.2M E JCT CTH E TO N, Wood, WI

Built 1992 Load: 32.4 t ADT: 510

LRD SOUTH SHORE RO

Good

Over: EAU CLAIRE LAKES (RIVER)

0.4M E JCT CTH Y, Bayfield, WI

Built 2023 Load: 32.7 t ADT: 201

LRD MILL RD

Good

Over: SIX MILE CREEK

1.8M E JCT CTH M, Dane, WI

Built 1985 Load: 32.7 t ADT: 3,485

STH 72

Good

Over: EAU GALLE RIVER

0.1M E JCT CTH C, Dunn, WI

Built 2020 Load: 32.7 t ADT: 1,100

STH 32

Good

Over: TORPEE CREEK

3.6 MILES SOUTH STH 52, Forest, WI

Built 2011 Load: 32.7 t ADT: 3,000

BIA RT 1250

Good

Over: DICKEY CREEK

3.6 KM NORTH OF HO-CHUNK, Jackson, WI

Built 2012 Load: 32.7 t ADT: 90

STH 95

Good

Over: CISNA CREEK

2.7M E JCT CTH F, Jackson, WI

Built 2023 Load: 32.7 t ADT: 2,400

USH 12/STH 27

Good

Over: ALLEN CREEK

0.455 MI E ALLEN CREEK RD, Jackson, WI

Built 2020 Load: 32.7 t ADT: 4,900

LRD SCHNELLE RD

Good

Over: FENWOOD CREEK

0.1M E JCT CTH M, Marathon, WI

Built 2012 Load: 32.7 t ADT: 81

LRD W. NORTH AVE

Good

Over: CANADIAN PACIFIC RAILWAY

0.6M W JCT STH 145, Milwaukee, WI

Built 2015 Load: 32.7 t ADT: 14,600

STH 15 EB

Good

Over: WCL RR

3.4M EAST US-45, Outagamie, WI

Built 2023 Load: 32.7 t ADT: 1,250

STH 15 WB

Good

Over: WCL RAILROAD

7.6M WEST STH 76, Outagamie, WI

Built 2023 Load: 32.7 t ADT: 1,250

USH 53

Good

Over: BEAVER CREEK

2.9M N JCT STH 54 TO E, Trempealeau, WI

Built 2014 Load: 32.7 t ADT: 6,800

LRD 15TH AVENUE

Good

Over: YELLOW RIVER

1.1M E JCT CTH T, Barron, WI

Built 2023 Load: 33.0 t ADT: 250

IH 41 SB

Good

Over: ASHWAUBENON CREEK

4.6M S JCT STH 172 TO E, Brown, WI

Built 2013 Load: 33.0 t ADT: 29,050

IH 41 NB

Good

Over: ASHWAUBENON CREEK

0.1M N JCT CTH F, Brown, WI

Built 2012 Load: 33.0 t ADT: 29,050

STH 25

Good

Over: HAY RIVER

0.3M N JCT STH 170, Dunn, WI

Built 2019 Load: 33.0 t ADT: 3,600

CTH 38TH ST

Good

Over: KILBOURN ROAD DITCH

0.9M W JCT STH 142, Kenosha, WI

Built 2011 Load: 33.0 t ADT: 5,500

Showing 9,551-9,600 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.