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 34

Good

Over: LITTLE EAU PLEINE RIVER

0.5M N JCT CTH E, Portage, WI

Built 1999 Load: 35.6 t ADT: 4,500

USH 10 EB RAMP

Good

Over: TOMORROW RIVER

AT TOMORROW RIVER, Portage, WI

Built 2004 Load: 35.6 t ADT: 320

USH 10 WB RAMP

Good

Over: TOMORROW RIVER

AT TOMORROW RIVER, Portage, WI

Built 2004 Load: 35.6 t ADT: 370

CTH Q

Good

Over: BEAR CREEK

1.3M S JCT CTH B, Portage, WI

Built 2003 Load: 35.6 t ADT: 426

CTH Y

Good

Over: PLOVER RIVER

2.9 M N JCT CTH K, Portage, WI

Built 2022 Load: 35.6 t ADT: 1,680

LRD THOROFARE RD (

Good

Over: ROUND LAKE OUTLET

2.1M N JCT STH 70, Price, WI

Built 1990 Load: 35.6 t ADT: 108

LRD GREEN CREEK RD

Good

Over: WEB CREEK

0.3M W JCT CTH N, Price, WI

Built 1993 Load: 35.6 t ADT: 33

LRD RIVER RD (DEAD

Good

Over: N FK SPIRIT RIVER

1.1M N JCT STH 86, Price, WI

Built 2005 Load: 35.6 t ADT: 104

LRD STATE ST

Good

Over: FOX RIVER

FOX RIVER, Racine, WI

Built 2003 Load: 35.6 t ADT: 6,200

CTH K

Good

Over: E BR ROOT RIVER

1.8M E JCT CTH U TO N, Racine, WI

Built 1992 Load: 35.6 t ADT: 2,700

STH 31 NB

Good

Over: ROOT RIVER

2.0 MI N JCT STH 38, Racine, WI

Built 1999 Load: 35.6 t ADT: 6,050

STH 31 SB

Good

Over: ROOT RIVER

2.1 MI S JCT STH 32, Racine, WI

Built 1999 Load: 35.6 t ADT: 6,050

STH 20

Good

Over: HONEY CREEK

4.7M E JCT IH-43, Racine, WI

Built 1995 Load: 35.6 t ADT: 3,400

LRD IVES GROVE RD

Good

Over: E BR ROOT RIVER CANAL

0.2M E JCT STH20, Racine, WI

Built 2004 Load: 35.6 t ADT: 52

LRD SIMMONS FLAT R

Good

Over: KICKAPOO RIVER

0.4M E JCT STH 131, Richland, WI

Built 1987 Load: 35.6 t ADT: 57

CTH G

Good

Over: BR CAMP CREEK

1.1M N JCT CTH I, Richland, WI

Built 1993 Load: 35.6 t ADT: 70

LRD WOLF LN

Good

Over: W BR PINE RIVER

0.1M W JCT CTH D, Richland, WI

Built 1987 Load: 35.6 t ADT: 45

LRD WOODSTOCK DR

Good

Over: W BR PINE RIVER

0.1M S JCT CTH D, Richland, WI

Built 1988 Load: 35.6 t ADT: 45

LRD BYRDS CREEK VA

Good

Over: BYRDS CREEK

1.2M N JCT STH 60, Richland, WI

Built 1989 Load: 35.6 t ADT: 62

LRD ST KILLIAN RD

Good

Over: BEAR CREEK

0.3M E JCT STH 130, Richland, WI

Built 1990 Load: 35.6 t ADT: 56

LRD ROBBSON RD

Good

Over: MILL CREEK

0.7M N JCT CTH E, Richland, WI

Built 1992 Load: 35.6 t ADT: 90

CTH MM

Good

Over: CAMP CREEK

0.3M S JCT STH 56, Richland, WI

Built 1991 Load: 35.6 t ADT: 76

LRD ROUND BARN LAN

Good

Over: DIETER HOLLOW CREEK

0.4M W JCT CTH E, Richland, WI

Built 1992 Load: 35.6 t ADT: 84

STH 58

Good

Over: MCGLYNN CREEK (LEE LAKE)

1.1M N JCT CTH I, Richland, WI

Built 1999 Load: 35.6 t ADT: 1,100

LRD ELK CREEK RD

Good

Over: BR ELK CREEK

0.8M E JCT CTH U, Richland, WI

Built 1994 Load: 35.6 t ADT: 16

LRD TOWER RD.

Good

Over: KNAPP CREEK

0.1M W JCT CTH U, Richland, WI

Built 1994 Load: 35.6 t ADT: 22

LRD FRY RD

Good

Over: BR WILLOW CREEK

0.8M S JCT CTH S, Richland, WI

Built 1992 Load: 35.6 t ADT: 557

CTH II

Good

Over: SIMPSON CREEK

0.4M N JCT CTH I, Richland, WI

Built 1995 Load: 35.6 t ADT: 1

CTH I

Good

Over: HAWKINS CREEK

0.3M W JCT CTH II, Richland, WI

Built 2001 Load: 35.6 t ADT: 494

LRD HAWKINS CREEK

Good

Over: HAWKINS CREEK

0.1M N JCT CTH I, Richland, WI

Built 2002 Load: 35.6 t ADT: 117

STH 56

Good

Over: TRIB TO CAMP CREEK

1.1M EAST OF CTH MM, Richland, WI

Built 2002 Load: 35.6 t ADT: 490

LRD DEEP WELL LANE

Good

Over: RYAN HOLLOW CREEK

0.1 MI N OF CTH KK, Richland, WI

Built 2018 Load: 35.6 t ADT: 100

STH 81

Good

Over: EAST FORK RACCOON CREEK

2.4M E JCT CTH H, Rock, WI

Built 1990 Load: 35.6 t ADT: 3,300

LRD CREEK RD

Good

Over: CMSTPP RR

3.4M E JCT STH 140, Rock, WI

Built 2020 Load: 35.6 t ADT: 480

LRD HOPKINS RD

Good

Over: BR SUGAR RIVER

0.9M N ILLINOIS ST LINE, Rock, WI

Built 1994 Load: 35.6 t ADT: 82

LRD SNYDER RD

Good

Over: STEVENS CREEK

2.2M W JCT STH 184, Rock, WI

Built 1996 Load: 35.6 t ADT: 105

STH 59-STH 213

Good

Over: ALLEN CREEK

0.9M E JCT STH 213 TO S, Rock, WI

Built 2000 Load: 35.6 t ADT: 3,200

STH 11 EB

Good

Over: MARKHAM CR

1.5M E OF JCT HANOVER RD, Rock, WI

Built 2002 Load: 35.6 t ADT: 2,350

STH 11 WB

Good

Over: MARKHAM CR

2.0M W JCT USH 51, Rock, WI

Built 2002 Load: 35.6 t ADT: 2,350

LRD JOHNSON DR

Good

Over: N BR BASS CR OVERFLOW

3.6M N JCT STH 213, Rock, WI

Built 2003 Load: 35.6 t ADT: 275

CTH H

Good

Over: RACCOON CREEK

1.0M S JCT STH 81, Rock, WI

Built 2005 Load: 35.6 t ADT: 422

IH 39 NB / IH 90 W

Good

Over: TURTLE CREEK

0.5M W JCT CTH S TO E, Rock, WI

Built 2018 Load: 35.6 t ADT: 26,750

IH 39 SB / IH 90 E

Good

Over: WSOR

3.7M S JCT STH 59, Rock, WI

Built 2019 Load: 35.6 t ADT: 26,750

LRD POLZIN ROAD

Good

Over: MARSH CREEK

0.5 MILES SOUTH OF USH 14, Rock, WI

Built 2021 Load: 35.6 t ADT: 112

LRD BEAM RD

Good

Over: DEER TAIL CREEK

0.6M N JCT USH 8, Rusk, WI

Built 1994 Load: 35.6 t ADT: 189

LRD PIONEER RD

Good

Over: SKINNER CREEK

1.2M E JCT CTH M-102, Rusk, WI

Built 1999 Load: 35.6 t ADT: 54

LRD MEADOW DAM RD

Good

Over: BIG WEIRGOR CREEK

5.9M E JCT CTH H-120, Rusk, WI

Built 2000 Load: 35.6 t ADT: 54

LRD POLGAR RD

Good

Over: SKINNER CR

1.1M W JCT CTH M, Rusk, WI

Built 2004 Load: 35.6 t ADT: 53

CTH O

Good

Over: DEVILS CREEK

6.2M W JCT STH 40-31, Rusk, WI

Built 2016 Load: 35.6 t ADT: 300

STH 136

Good

Over: PLEASANT VALLEY CREEK

2.3M E JCT CTH PP, Sauk, WI

Built 1990 Load: 35.6 t ADT: 3,500

Showing 10,651-10,700 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.