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

CTH-CB

Good

Over: TRIB LT LAKE BUTTE DES M

.1 M NORTH OF SHADY LANE, Winnebago, WI

Built 1996 Load: 38.9 t ADT: 9,100

USH 10 WB

Good

Over: RAT RIVER

0.3M W JCT USH 45 TO S, Winnebago, WI

Built 2003 Load: 38.9 t ADT: 13,750

USH 10 EB

Good

Over: RAT RIVER

3.4M S JCT USH 10 TO W, Winnebago, WI

Built 2003 Load: 38.9 t ADT: 13,750

CTH-M (CENTER)

Good

Over: ARROWHEAD RIVER

1.1M N JCT CTH G, Winnebago, WI

Built 2006 Load: 38.9 t ADT: 2,300

LRD SAWYER ST

Good

Over: SAWYER CREEK

0.1M S JCT STH 21, Winnebago, WI

Built 2004 Load: 38.9 t ADT: 7,000

LRD LAKE BUTTE DES

Good

Over: DRAINAGE DITCH

.5 M WEST OF STH 45, Winnebago, WI

Built 2010 Load: 38.9 t ADT: 5,125

CTH BB

Good

Over: YELLOW RIVER

2.1M N JCT USH 10, Wood, WI

Built 1987 Load: 38.9 t ADT: 325

LRD SEARLES RD

Good

Over: ELM CREEK

0.4M S JCT CTH Q, Wood, WI

Built 1988 Load: 38.9 t ADT: 131

CTH Z RANGE ST

Good

Over: FOURMILE CREEK

2.0M W JCT STH 13, Wood, WI

Built 1990 Load: 38.9 t ADT: 3,300

LRD BRONSON RD (DE

Good

Over: CRANBERRY CREEK

2.0M S JCT STH 73, Wood, WI

Built 1994 Load: 38.9 t ADT: 50

LRD ARPIN-SHERRY R

Good

Over: E FK HEMLOCK CREEK

1.2M N JCT CTH HH, Wood, WI

Built 1994 Load: 38.9 t ADT: 50

LRD ELM RD

Good

Over: BEAR CREEK

0.6M E JCT CTH O, Wood, WI

Built 1993 Load: 38.9 t ADT: 50

LRD SENECA RD

Good

Over: BR ELM CREEK

3.3M E JCT CTH D, Wood, WI

Built 1994 Load: 38.9 t ADT: 50

CTH O

Good

Over: BEAR CREEK

0.2M N JCT CTH C, Wood, WI

Built 2002 Load: 38.9 t ADT: 1,704

CTH H

Good

Over: BR LITTLE EAU PLEINE R

1.6M W JCT CTH M, Wood, WI

Built 2006 Load: 38.9 t ADT: 1,200

LRD BATTERMAN RD

Good

Over: BR CRANBERRY CREEK

4.7M W JCT CTH G, Wood, WI

Built 2008 Load: 38.9 t ADT: 41

STH13 SB

Good

Over: MILL CREEK

.4 M N. OF US 10(CTH A), Wood, WI

Built 2011 Load: 38.9 t ADT: 8,700

CTH S

Good

Over: BR MOSQUITO CREEK

1.6M S JCT CTH C, Wood, WI

Built 2013 Load: 38.9 t ADT: 460

LRD 65TH AVENUE

Good

Over: TROUT CREEK

200" E OF 95TH STREET, Chippewa, WI

Built 2009 Load: 39.2 t ADT: 145

CTH SS

Good

Over: BR DUNCAN CREEK

0.72 M SE CTH Q, Chippewa, WI

Built 2022 Load: 39.2 t ADT: 1,060

IH 39 NB / IH 90 W

Good

Over: BRANCH SAUNDERS CREEK

1.2 MI N JCT WITH STH 73, Dane, WI

Built 2017 Load: 39.2 t ADT: 28,100

CTH JG

Good

Over: W BR SUGAR RIVER

2.8M S JCT USH 18, Dane, WI

Built 2023 Load: 39.2 t ADT: 864

CTH O

Good

Over: ASHIPPUN RIVER

0.6M E JCT CTH P, Dodge, WI

Built 2016 Load: 39.2 t ADT: 820

LRD CHAFFEY FOXBOR

Good

Over: BLACK RIVER

1.2M W JCT STH 35, Douglas, WI

Built 2018 Load: 39.2 t ADT: 100

CTH AA

Good

Over: OTTER CREEK

0.7M E USH 53, Eau Claire, WI

Built 2016 Load: 39.2 t ADT: 2,900

LRD GRAND AVE

Good

Over: HALF MOON LAKE

0.5M W JCT USH B12, Eau Claire, WI

Built 2017 Load: 39.2 t ADT: 1,800

CTH G

Good

Over: MULLET CREEK

0.8M S JCT STH 23, Fond du Lac, WI

Built 2022 Load: 39.2 t ADT: 1,350

CTH D

Good

Over: CANON CR

LAFAYETTE COUNTY, Lafayette, WI

Built 2013 Load: 39.2 t ADT: 111

LRD CTH X/CAMP PHI

Good

Over: EAU CLAIRE RIVER

1.3M S JCT CTH N, Marathon, WI

Built 2011 Load: 39.2 t ADT: 9,738

CTH Z

Good

Over: EAU CLAIRE RIVER

0.7M W JCT CTH Y, Marathon, WI

Built 2019 Load: 39.2 t ADT: 1,270

CTH Y

Good

Over: PLOVER RIVER

1.0M N JCT STH 29, Marathon, WI

Built 2020 Load: 39.2 t ADT: 911

LRD ROOT RIVER PAR

Good

Over: ROOT RIVER

0.5M E OF JCT W/ 76TH ST., Milwaukee, WI

Built 2010 Load: 39.2 t ADT: 980

IH RAMP, STH 59 -

Good

Over: HANK AARON STATE TRAIL

1.0 MI N JCT STH 59, Milwaukee, WI

Built 2017 Load: 39.2 t ADT: 7,000

LRD SOUTH 70TH STR

Good

Over: HANK AARON STATE TRAIL

1M SOUTH I-94, Milwaukee, WI

Built 2023 Load: 39.2 t ADT: 18,100

CTH H

Good

Over: OCONTO RIVER

1.0M W JCT CTH V, Oconto, WI

Built 2020 Load: 39.2 t ADT: 360

LRD COVERED BRIDGE

Good

Over: CEDAR CREEK

AT CEDAR CREEK, Ozaukee, WI

Built 2022 Load: 39.2 t ADT: 965

CTH G

Good

Over: MILL CREEK

2.2M S JCT USH 10, Portage, WI

Built 2017 Load: 39.2 t ADT: 146

CTH E

Good

Over: MARSH CREEK

0.7M S JCT USH 14, Rock, WI

Built 2023 Load: 39.2 t ADT: 3,148

CTH GG

Good

Over: BRUNET RIVER

2.4 MI N OF JCT STH 70, Sawyer, WI

Built 2014 Load: 39.2 t ADT: 236

LRD DOPP RD

Good

Over: SMIKRUD COULEE CREEK

0.1M S JCT CTH D, Trempealeau, WI

Built 2020 Load: 39.2 t ADT: 100

LRD SHERIDAN SPRIN

Good

Over: WHITE RIVER

2.2 M S OF JCT STH 36, Walworth, WI

Built 2015 Load: 39.2 t ADT: 1,400

STH 49-STH 161-MAI

Good

Over: S BR LITTLE WOLF RIVER

0.5M N JCT STH 161 TO E, Waupaca, WI

Built 2020 Load: 39.2 t ADT: 4,900

CTH BB

Good

Over: LITTLE WOLF RIVER

0.1M W JCT CTH B, Waupaca, WI

Built 2022 Load: 39.2 t ADT: 940

IH 41 NB

Good

Over: SAWYER CREEK

0.6M S JCT STH 21, Winnebago, WI

Built 2014 Load: 39.2 t ADT: 35,250

IH 41 SB

Good

Over: SAWYER CREEK

5.4M N JCT STH 26 TO S, Winnebago, WI

Built 2012 Load: 39.2 t ADT: 35,250

CTH P

Good

Over: BR TREMPEALEAU RIVER

4.6M N JCT STH 35, Buffalo, WI

Built 2009 Load: 39.5 t ADT: 442

LRD NORTH WILLIAMS

Good

Over: WOOD RIVER

0.8M N JCT STH 70, Burnett, WI

Built 1977 Load: 39.5 t ADT: 205

CTH C

Good

Over: BR S FK SUGAR CREEK

7.1M E JCT STH 35, Crawford, WI

Built 2015 Load: 39.5 t ADT: 450

CTH O

Good

Over: BEARGRASS CREEK

0.2 MI W CTH V, Eau Claire, WI

Built 2020 Load: 39.5 t ADT: 150

CTH E

Good

Over: PECATONICA RIVER

1.5MI WEST OF CTH J, Iowa, WI

Built 2016 Load: 39.5 t ADT: 390

Showing 12,351-12,400 of 14,851 bridges

Related

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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.