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

STH 86

Good

Over: N FK SPIRIT RIVER

0.1M E JCT CTH YY, Lincoln, WI

Built 1991 Load: 32.4 t ADT: 610

STH 86

Good

Over: SQUAW CREEK

3.4M E JCT CTH YY, Lincoln, WI

Built 1991 Load: 32.4 t ADT: 650

USH 8

Good

Over: BRYANT CREEK

0.45M EAST OF CTH T, Lincoln, WI

Built 2006 Load: 32.4 t ADT: 2,000

CTH S

Good

Over: SKANAWAN CREEK

0.9M W JCT CTH V, Lincoln, WI

Built 2022 Load: 32.4 t ADT: 450

CTH FF

Good

Over: COUNTY LINE CREEK

1.5M W JCT CTH K, Lincoln, WI

Built 1996 Load: 32.4 t ADT: 541

CTH E

Good

Over: N BR BAUERS CREEK

3.2M S JCT STH 86, Lincoln, WI

Built 1986 Load: 32.4 t ADT: 484

LRD DAIRYLAND DR

Good

Over: FISCHER CREEK

1.5M N JCT CTH XX, Manitowoc, WI

Built 1957 Load: 32.4 t ADT: 1,500

LRD LAX CHAPEL ROA

Good

Over: BR SHEBOYGAN RIVER

0.1M S JCT CTH XX, Manitowoc, WI

Built 1972 Load: 32.4 t ADT: 293

LRD GASS LAKE RD

Good

Over: PINE CREEK

0.1M N JCT CTH C, Manitowoc, WI

Built 1977 Load: 32.4 t ADT: 293

USH 151

Good

Over: SILVER CREEK

2.6M N JCT CTH S, Manitowoc, WI

Built 1977 Load: 32.4 t ADT: 6,200

LRD WESTVIEW RD

Good

Over: FISCHER CREEK

1.0M S JCT CTH X, Manitowoc, WI

Built 1982 Load: 32.4 t ADT: 176

CTH F

Good

Over: POINT CREEK

0.2M E JCT CTH N TO S, Manitowoc, WI

Built 1985 Load: 32.4 t ADT: 450

CTH J

Good

Over: MANITOWOC RIVER

0.3M N JCT CTH JJ TO E, Manitowoc, WI

Built 1988 Load: 32.4 t ADT: 1,700

STH 42

Good

Over: MEEME RIVER

0.4M N JCT CTH XX TO W, Manitowoc, WI

Built 1991 Load: 32.4 t ADT: 2,300

CTH W

Good

Over: BR MUD CREEK

2.1M N JCT CTH JJ, Manitowoc, WI

Built 1989 Load: 32.4 t ADT: 2,400

USH 10

Good

Over: EAST BR MUD CREEK

1.1M E JCT CTH W, Manitowoc, WI

Built 1993 Load: 32.4 t ADT: 5,600

CTH T

Good

Over: BRANCH R

0.8M N STH 310, Manitowoc, WI

Built 2004 Load: 32.4 t ADT: 890

USH 10/WALDO BLVD

Good

Over: DRY RUN

175 FT W OF FLEETWOOD DR, Manitowoc, WI

Built 2020 Load: 32.4 t ADT: 11,500

LRD HICKORY HILLS

Good

Over: MUD CREEK

LOCATION UNKNOWN, PLEASE, Manitowoc, WI

Built 2016 Load: 32.4 t ADT: 40

CTH V

Good

Over: TRIB TO EAST RIVER

2.1 MI W OF STH 42, Manitowoc, WI

Built 2019 Load: 32.4 t ADT: 1,100

LRD PIONEER RD

Good

Over: MEEME RIVER

290 FT W OF JCT STH 42, Manitowoc, WI

Built 2020 Load: 32.4 t ADT: 100

LRD TWIN BRIDGE RO

Good

Over: JAMBO CREEK

1.3M E JCT CTH Q, Manitowoc, WI

Built 2022 Load: 32.4 t ADT: 100

IH USH 51-IH 39 NB

Good

Over: WISCONSIN RIVER 27

0.4M N JCT USH B51 TO N, Marathon, WI

Built 1961 Load: 32.4 t ADT: 18,800

LRD 28TH AVE

Good

Over: BR WISCONSIN RIVER

1.2M N JCT CTH WW, Marathon, WI

Built 1989 Load: 32.4 t ADT: 67

LRD 6TH ST

Good

Over: JIM MOORE CREEK

0.9M N JCT STH 52, Marathon, WI

Built 1986 Load: 32.4 t ADT: 7,100

CTH S

Good

Over: BIG EAU PLEINE RESERVOIR

0.5M N JCT CTH C, Marathon, WI

Built 1996 Load: 32.4 t ADT: 856

LRD FAIRHAVEN ROAD

Good

Over: BR YELLOW RIVER

3.3M S JCT STH 98, Marathon, WI

Built 2003 Load: 32.4 t ADT: 102

CTH H

Good

Over: TRIB TO PET BROOK

0.1M N JCT STH 29, Marathon, WI

Built 1997 Load: 32.4 t ADT: 1,653

STH 29 EB

Good

Over: PORKY CREEK

1.9M E JCT STH 13, Marathon, WI

Built 1998 Load: 32.4 t ADT: 9,200

STH 29 EB

Good

Over: BIG EAU PLEINE RIVER

3.0M E JCT STH 13, Marathon, WI

Built 1998 Load: 32.4 t ADT: 5,900

STH 153-FIR ST

Good

Over: BR BIG EAU PLEINE RIVER

0.2M E JCT STH 97, Marathon, WI

Built 2001 Load: 32.4 t ADT: 4,200

LRD THOMAS ST

Good

Over: CNW RR

0.1 MI W. JCT BUS 51, Marathon, WI

Built 2006 Load: 32.4 t ADT: 16,100

STH 29

Good

Over: ARTUS CR

1.9 MI E JCT STH 107, Marathon, WI

Built 2013 Load: 32.4 t ADT: 20,100

LRD JOHNSON CREEK

Good

Over: JOHNSON CREEK

0.33M WEST OF CTH X, Marathon, WI

Built 2012 Load: 32.4 t ADT: 100

LRD SANDSTONE FALL

Good

Over: EINERT CREEK

1.2M W JCT CTH S, Marathon, WI

Built 2021 Load: 32.4 t ADT: 25

LRD MIDPOINT RD

Good

Over: FOUR MILE CREEK

1.5M S JCT CTH N, Marathon, WI

Built 2022 Load: 32.4 t ADT: 88

LRD WINDFALL HILL

Good

Over: BEAVER CREEK

1.2M W JCT STH 97, Marathon, WI

Built 1989 Load: 32.4 t ADT: 44

LRD MERIDIAN RD

Good

Over: DREWEK CREEK

1.6M N JCT CTH U, Marathon, WI

Built 1975 Load: 32.4 t ADT: 108

LRD EAU CLAIRE RIV

Good

Over: BR EAU CLAIRE RIVER

0.5M W JCT CTH Y, Marathon, WI

Built 2014 Load: 32.4 t ADT: 152

LRD CREEK RD

Good

Over: BULL JUNIOR CREEK

0.9M S JCT CTH X, Marathon, WI

Built 1987 Load: 32.4 t ADT: 50

LRD KMIECIK RD (DE

Good

Over: BULL JUNIOR CREEK

2.4M S JCT STH 29, Marathon, WI

Built 1965 Load: 32.4 t ADT: 50

LRD RIVER RUN RD

Good

Over: WILD CREEK

0.7M E JCT STH 97, Marathon, WI

Built 1991 Load: 32.4 t ADT: 50

LRD PLEASENT RD

Good

Over: SAMPSON CREEK

0.9M S JCT CTH X, Marathon, WI

Built 1988 Load: 32.4 t ADT: 50

LRD LOCKER RD

Good

Over: PEPLIN CREEK

2.3M W JCT CTH X, Marathon, WI

Built 2023 Load: 32.4 t ADT: 118

LRD CREEK RD

Good

Over: SAMPSON CREEK

1.5M S JCT CTH X, Marathon, WI

Built 2023 Load: 32.4 t ADT: 52

STH 180

Good

Over: TWIN CREEK

1.6M N JCT CTH G, Marinette, WI

Built 1987 Load: 32.4 t ADT: 1,400

USH 41

Good

Over: UNNAMED CR

2.9M N JCT CTH W, Marinette, WI

Built 2008 Load: 32.4 t ADT: 11,600

LRD DAM RD (DEAD E

Good

Over: BEECHER LAKE

0.2M W JCT USH 141, Marinette, WI

Built 1986 Load: 32.4 t ADT: 75

STH 23

Good

Over: S BR NEENAH CREEK

0.3M E JCT CTH AA, Marquette, WI

Built 1981 Load: 32.4 t ADT: 1,800

STH 73-MAIN ST

Good

Over: WHITE RIVER

0.3M N JCT CTH E TO W, Marquette, WI

Built 1989 Load: 32.4 t ADT: 2,800

Showing 9,051-9,100 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.