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

Data updated May 2026

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

Wisconsin51.3%41.1%GoodFairPoor (structurally 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.

MS

Mississippi

5.92% top marginal rate
Structure
Progressive
Burden @ $100K
$16,823

SC

South Carolina

6.10% top marginal rate
Structure
Progressive
Burden @ $100K
$5,396
Selected

WI

Wisconsin

6.13% top marginal rate
Structure
Progressive
Burden @ $100K
$14,851

NC

North Carolina

6.16% top marginal rate
Structure
Progressive
Burden @ $100K
$18,901

HI

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

CNW RR

Unknown

Over: LRD EDGEWOOD AVE

1.3M E JCT CTH B, Adams, WI

Built 1911 ADT: 20

CNW RR

Unknown

Over: LRD 1ST AVE

0.1M N JCT CTH EE, Adams, WI

Built 1911 ADT: 40

CNW RR

Unknown

Over: LRD VAUGHN AVE

0.3M S JCT USH 2, Ashland, WI

Built 1917 ADT: 1,300

BN RR

Unknown

Over: LRD VAUGHN AVE

0.3M S JCT USH 2, Ashland, WI

Built 1897 ADT: 1,300

SOO LINE

Unknown

Over: LRD VAUGHN AVE

0.2M S JCT USH 2, Ashland, WI

Built 1896 ADT: 1,300

CNW RR

Unknown

Over: LRD VAUGHN AVE

0.2M S JCT USH 2, Ashland, WI

Built 1917 ADT: 1,300

CNW RR

Unknown

Over: LRD ST CLAIR ST

0.1M N JCT USH 2, Ashland, WI

Built 1922 ADT: 250

SOO LINE

Unknown

Over: LRD WATER ST

0.2M N JCT USH 2, Ashland, WI

Built 1922 ADT: 300

SOO LINE

Unknown

Over: LRD 2ND ST

0.5M E JCT STH 13, Ashland, WI

Built 1910 ADT: 3,240

SOO LINE

Unknown

Over: LRD 2ND ST

0.5M E JCT STH 13, Ashland, WI

Built 1910 ADT: 3,240

USH 53 SB

Unknown

Over: LRD CARLSON SCHOOL DRIVE

0.4M W JCT CTH SS, Barron, WI

Built 1972 ADT: 340

USH 53 NB

Unknown

Over: LRD CARLSON SCHOOL DRIVE

0.4M W JCT CTH SS, Barron, WI

Built 1972 ADT: 300

USH 53 SB

Unknown

Over: CTH AA

0.5M W JCT CTH SS, Barron, WI

Built 1972 ADT: 230

USH 53 NB

Unknown

Over: CTH AA

0.5M W JCT CTH SS, Barron, WI

Built 1972 ADT: 230

USH 53 SB

Unknown

Over: CTH A

1.3M N JCT CTH AA, Barron, WI

Built 1972 ADT: 300

USH 53 NB

Unknown

Over: CTH A

1.3M N JCT CTH AA, Barron, WI

Built 1972 ADT: 450

USH 53 NB

Unknown

Over: CTH I

0.5M S JCT CTH SS, Barron, WI

Built 1972 ADT: 4,400

USH 53 SB

Unknown

Over: CTH I

0.5M S JCT CTH SS, Barron, WI

Built 1972 ADT: 4,400

USH 53 NB

Unknown

Over: LRD KNAPP ST

1.3M W JCT CTH SS, Barron, WI

Built 1972 ADT: 2,500

USH 53 SB-KNAPP ST

Unknown

Over: LRD KNAPP ST

1.3M W JCT CTH SS, Barron, WI

Built 1972 ADT: 300

CTH D

Unknown

Over: USH 53

1.9M N JCT CTH I TO E, Barron, WI

Built 1972 ADT: 11,900

CTH OO

Unknown

Over: USH 53

4.2M N JCT CTH I TO E, Barron, WI

Built 1972 ADT: 11,700

LRD 21ST ST

Unknown

Over: USH 53

6.0M N JCT CTH I TO E, Barron, WI

Built 1972 ADT: 11,700

USH 53 SB

Unknown

Over: LRD 20TH ST

1.8M N JCT CTH OO, Barron, WI

Built 1972 ADT: 300

USH 53 NB

Unknown

Over: LRD 20TH ST

1.8M N JCT CTH OO, Barron, WI

Built 1972 ADT: 3,000

USH 53 SB

Unknown

Over: USH 8

1.4M E JCT CTH O, Barron, WI

Built 1972 ADT: 11,000

USH 53 NB

Unknown

Over: USH 8

1.4M E JCT CTH O, Barron, WI

Built 1972 ADT: 11,000

USH 53 SB

Unknown

Over: CTH W

1.3M W JCT USH 8, Barron, WI

Built 1973 ADT: 5,500

USH 53 NB

Unknown

Over: CTH W

1.3M W JCT USH 8, Barron, WI

Built 1973 ADT: 5,500

LRD 15TH AVE

Unknown

Over: USH 53

2.2M N JCT USH 8 TO E, Barron, WI

Built 1977 ADT: 12,400

USH 53 SB

Unknown

Over: CTH O

0.1M E JCT USH 53 TO S, Barron, WI

Built 1977 ADT: 15,500

USH 53 NB

Unknown

Over: CTH O

0.1M E JCT USH 53 TO S, Barron, WI

Built 1977 ADT: 15,500

LRD ALLEN ST

Unknown

Over: USH 53

7.3M N JCT USH 8 TO E, Barron, WI

Built 1977 ADT: 12,600

LRD AUGUSTA ST

Unknown

Over: USH 53

7.8M N JCT USH 8 TO E, Barron, WI

Built 1977 ADT: 12,600

USH 53 SB

Unknown

Over: STH 48-KNAPP ST

4.2M E JCT STH 25, Barron, WI

Built 1977 ADT: 8,400

USH 53 NB

Unknown

Over: STH 48-KNAPP ST

4.2M E JCT STH 25, Barron, WI

Built 1977 ADT: 8,400

USH 53 SB

Unknown

Over: LRD OAK LAWN RD

1.1M W JCT STH 48, Barron, WI

Built 1976 ADT: 2,000

USH 53 NB

Unknown

Over: LRD OAK LAWN RD

1.1M W JCT STH 48, Barron, WI

Built 1976 ADT: 2,000

LRD 16 1/2 AVE

Unknown

Over: USH 53

3.7M N JCT USH 8 TO E, Barron, WI

Built 1977 ADT: 12,400

CTH B

Unknown

Over: USH 53

4.3M N JCT STH 48 TO E, Barron, WI

Built 1977 ADT: 10,300

USH 53 SB

Unknown

Over: CTH SS / WILD RIVERS TRA

0.5M N JCT CTH B, Barron, WI

Built 1977 ADT: 1,900

USH 53 NB

Unknown

Over: CTH SS / WILD RIVERS TRA

0.5M N JCT CTH B, Barron, WI

Built 1984 ADT: 2,100

USH 8 WB

Unknown

Over: LRD 19TH ST

0.8M S JCT CTH W, Barron, WI

Built 1973 ADT: 3,200

USH 8 EB

Unknown

Over: LRD 19TH ST

0.8M S JCT CTH W, Barron, WI

Built 1973 ADT: 3,200

USH 53 SB

Unknown

Over: CTH V

UNDER USH53, Barron, WI

Built 2012 ADT: 1,900

USH 53 NB

Unknown

Over: CTH V

AT USH 53, Barron, WI

Built 2013 ADT: 1,900

CNW RR

Unknown

Over: LRD TOWN RD

0.1M S JCT USH 63, Barron, WI

Built 1930 ADT: 20

STH 32- ASHLAND AV

Unknown

Over: LRD 6TH ST & CNRR (WC/OL

0.2M S JCT STH 54 TO E, Brown, WI

Built 1955 ADT: 1,000

STH 32- ASHLAND AV

Unknown

Over: LRD 5TH ST

0.1M S JCT STH 54 TO E, Brown, WI

Built 1955 ADT: 1,000

USH 41 SB-USH 141

Unknown

Over: LRD RIVERSIDE DR. & SUAM

0.5M W JCT CTH J, Brown, WI

Built 1970 ADT: 1,300

Showing 1-50 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.

Every figure on PlainBridge is rendered directly from federal source data, no number is typed in by an editor. This page draws directly on federal source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.