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

IH 39 NB

Unknown

Over: LRD LIEN RD

AT INTERSECTION, Dane, WI

Built 2010 ADT: 4,700

LRD BUCKEYE RD

Unknown

Over: IH 39/90

AT BUCKEYE RD, Dane, WI

Built 2008 ADT: 48,700

IH 94 EB

Unknown

Over: LRD (FUTURE) MILWAUKEE S

AT IH94, Dane, WI

Built 2011

USH 12 EB

Unknown

Over: USH 14

AT USH12, Dane, WI

Built 2004 ADT: 16,700

USH 12 WB

Unknown

Over: USH 14 EB

AT USH12, Dane, WI

Built 2005 ADT: 16,700

LRD S. HIGH POINT

Unknown

Over: USH 12 / USH 14

AT HIGH POINT ROAD, 1.0 M, Dane, WI

Built 2017 ADT: 61,700

LRD RAMP W-4

Unknown

Over: USH 18/151

AT RAMP W-4, Dane, WI

Built 2004 ADT: 26,700

SW BIKE/PEDESTRIAN

Unknown

Over: LRD PARK ST

SW BIKE PATH, Dane, WI

Built 2005 ADT: 20,950

USH 51 NB

Unknown

Over: LRD BEAR TREE PARKWAY

AT USH 51, Dane, WI

Built 2013 ADT: 1

USH 51 SB

Unknown

Over: LRD BEAR TREE PARKWAY

3.4 MI. S OF CTH V TO W, Dane, WI

Built 2013 ADT: 1

USH 51 NB

Unknown

Over: LRD WINDSOR RD

AT USH 51, Dane, WI

Built 2013 ADT: 3,700

USH 51 SB

Unknown

Over: LRD WINDSOR ROAD

AT 51, Dane, WI

Built 2013 ADT: 3,700

USH 51 NB

Unknown

Over: LRD VINBURN RD

AT USH 51, Dane, WI

Built 2013 ADT: 4,100

USH 51 SB

Unknown

Over: LRD VINBURN RD

AT USH 51, Dane, WI

Built 2013 ADT: 4,100

USH 51 NB

Unknown

Over: CTH V

AT USH 51 NB, Dane, WI

Built 2014 ADT: 7,900

USH 51 SB

Unknown

Over: CTH V

AT USH 51, Dane, WI

Built 2014 ADT: 7,900

STARKWEATHER CR BI

Unknown

Over: USH 151

AT STARKWEATHER CREEK BK, Dane, WI

Built 2007 ADT: 47,150

STARKWEATHER CREEK

Unknown

Over: LRD ABERG AVENUE

AT INTERSECTION, Dane, WI

Built 2011 ADT: 32,650

USH 151

Unknown

Over: STH 30 EB

AT USH 151, Dane, WI

Built 2009 ADT: 37,300

LRD LACY RD

Unknown

Over: USH 14

AT LACY ROAD, Dane, WI

Built 2012 ADT: 27,200

PEDESTRIAN

Unknown

Over: USH 12

AT INTERSECTION, Dane, WI

Built 2010 ADT: 122,400

CAPITAL CITY TRAIL

Unknown

Over: CTH D

AT JCT PED BRIDGE, Dane, WI

Built 2009 ADT: 99

USH 51 SB (STOUGHT

Unknown

Over: CTH BB (COTTAGE GROVE RD

AT UHS 51, Dane, WI

Built 2016 ADT: 26,600

CTH I

Unknown

Over: IH 39 NB

AT CTH I, Dane, WI

Built 2013 ADT: 29,000

CTH DM

Unknown

Over: IH 39/90/94

2 MI N OF JCT WITH CTH V, Dane, WI

Built 2017 ADT: 58,000

USH 18WB/151SB, VE

Unknown

Over: LRD FRONTAGE RD E & W

AT VERONA RD, Dane, WI

Built 2014 ADT: 16,700

USH 18EB/151NB, VE

Unknown

Over: LRD FRONTAGE RD E & W

AT VERONA RD, Dane, WI

Built 2014 ADT: 16,700

USH EB USH 12/14

Unknown

Over: USH 18/151 & VERONA RD

2.7M S JCT CTH MS, Dane, WI

Built 2015 ADT: 67,100

USH 12 WB

Unknown

Over: USH 18 (VERONA RD)

1.8M N JCT CTH PD, Dane, WI

Built 2016 ADT: 67,100

WHENONA DR PED BRI

Unknown

Over: USH 12/14/18/151 & W BEL

0.6M E JCT USH 18, Dane, WI

Built 2015 ADT: 119,000

CTH M

Unknown

Over: CTH S

AT CTH M, Dane, WI

Built 2014 ADT: 20,300

USH 51 SB EXIT RAM

Unknown

Over: CTH BB & RAILROAD

AT JCT USH 51, Dane, WI

Built 2015 ADT: 7,100

CANNONBALL PED

Unknown

Over: USH 12/14/18/151

AT CANNONBALL PED, Dane, WI

Built 2013 ADT: 111,750

LRD SEMINOLE HIGHW

Unknown

Over: USH 12/14/18/151

AT SEMINOLE HWY, Dane, WI

Built 2013 ADT: 118,000

MILITARY RIDGE PAT

Unknown

Over: CTH PD, MCKEE RD

05460000000 004, Dane, WI

IH 39 SB / IH 90 E

Unknown

Over: LRD LAKE DRIVE ROAD

1.0M E JCT USH 51, Dane, WI

Built 2018 ADT: 2,800

IH 39 NB / IH 90 W

Unknown

Over: LRD LAKE DRIVE ROAD

1.1 MI E OF JCT WITH STH, Dane, WI

Built 2017 ADT: 2,800

USH 51/STH 73

Unknown

Over: IH 39/90

AT JCT USH 51, Dane, WI

Built 2015 ADT: 60,100

LRD EDGERTON RD

Unknown

Over: IH 39/90

AT EDGERTON RD, Dane, WI

Built 2015 ADT: 60,100

LRD CTH W (MAPLE G

Unknown

Over: IH 39 NB/SB

6.2M N JCT STH 59, Dane, WI

Built 2016 ADT: 60,100

IH 39 SB

Unknown

Over: USH 51

.2 M E OF CTH A, Dane, WI

Built 2016 ADT: 4,800

IH 39 NB / IH 90 W

Unknown

Over: USH 51

5.8 MI E JCT WITH CTH N, Dane, WI

Built 2017 ADT: 4,800

CTH A

Unknown

Over: IH 39/90

0.9M N JCT USH 51, Dane, WI

Built 2015 ADT: 57,800

IH 39 SB / IH 90 E

Unknown

Over: LRD EAST CHURCH ROAD

1.0 MI E JCT E CHURCH RD, Dane, WI

Built 2016 ADT: 600

IH 39 NB / IH 90 W

Unknown

Over: LRD EAST CHURCH ROAD

1.3 MI W OF JCT WITH STH, Dane, WI

Built 2017 ADT: 610

IH 39 SB / IH 90 E

Unknown

Over: CTH B

1.6M W JCT STH 73, Dane, WI

Built 2019 ADT: 470

IH 39 NB / IH 90 W

Unknown

Over: CTH B

1.6M W JCT STH 73, Dane, WI

Built 2018 ADT: 470

IH 39 SB / IH 90 E

Unknown

Over: CTH W

0.9M N JCT CTH B, Dane, WI

Built 2019 ADT: 540

IH 39 NB / IH 90 W

Unknown

Over: CTH W

0.9M N JCT CTH B, Dane, WI

Built 2018 ADT: 540

IH 39 SB / IH 90 E

Unknown

Over: LRD DROTNING ROAD

0.6M E JCT CTH BN, Dane, WI

Built 2019 ADT: 100

Showing 551-600 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.