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

LRD CORTLAND AVE

Unknown

Over: IH 94

2.1M E JCT CTH E, Monroe, WI

Built 1968 ADT: 19,900

CTH OO

Unknown

Over: IH 94

2.9M E JCT CTH E, Monroe, WI

Built 1968 ADT: 19,900

IH 90 EB

Unknown

Over: LRD LEON VALLEY RD

1.3M W JCT STH 27, Monroe, WI

Built 1968 ADT: 100

IH 90 WB

Unknown

Over: LRD LEON VALLEY RD

1.3M W JCT STH 27, Monroe, WI

Built 1968 ADT: 100

STH 27 NB-BLACK RI

Unknown

Over: IH 90

9.5M E JCT STH 162 TO N, Monroe, WI

Built 1968 ADT: 19,300

LRD IDEAL RD

Unknown

Over: IH 90

0.8M E JCT STH 27 TO N, Monroe, WI

Built 1968 ADT: 19,300

LRD JOHN ST/IGLOO

Unknown

Over: IH 90

1.6M E JCT STH 27 TO N, Monroe, WI

Built 1968 ADT: 19,300

STH 71

Unknown

Over: IH 90

2.5M E JCT STH 27 (E), Monroe, WI

Built 1968 ADT: 19,300

STH 16

Unknown

Over: IH 90

3.5M E JCT STH 27 (E), Monroe, WI

Built 1968 ADT: 19,300

IH 90 EB

Unknown

Over: CTH A

0.1M N JCT STH 16, Monroe, WI

Built 1968 ADT: 830

IH 90 WB

Unknown

Over: CTH A

0.1M N JCT STH 16, Monroe, WI

Built 1968 ADT: 830

IH 90 EB

Unknown

Over: LRD HAZEL AVENUE

0.1M N JCT STH 16, Monroe, WI

Built 1968 ADT: 50

IH 90 WB

Unknown

Over: LRD HAZEL AVENUE

0.1M N JCT STH 16, Monroe, WI

Built 1968 ADT: 50

IH 90 EB

Unknown

Over: STH 16

0.1M E JCT CTH T, Monroe, WI

Built 1968 ADT: 2,300

IH 90 WB

Unknown

Over: STH 16

0.1M E JCT CTH T, Monroe, WI

Built 1968 ADT: 2,400

STH 131

Unknown

Over: IH 90

13.4M E JCT STH 16 TO E, Monroe, WI

Built 1968 ADT: 16,300

STH 27 SB

Unknown

Over: IH 90

9.5M E JCT STH 162 TO N, Monroe, WI

Built 1968 ADT: 19,300

ELROY-SPARTA TRAIL

Unknown

Over: STH 71-STH 131

2.8M E JCT STH 131 TO S, Monroe, WI

Built 1984 ADT: 2,600

LRD INDUSTRIAL AVE

Unknown

Over: IH 94

AT INDUSTRIAL AVE, Monroe, WI

Built 2003 ADT: 26,100

LRD ELROY-SPARTA T

Unknown

Over: IH 90

TOWN OF SPARTA, Monroe, WI

Built 2002 ADT: 99

STH 21

Unknown

Over: IH 94

AT STH21, Monroe, WI

Built 2005 ADT: 17,700

LRD FUNNEL RD

Unknown

Over: IH 90/94 EB

AT INTERSECTION, Monroe, WI

Built 2011 ADT: 31,900

IH 90/94 WB

Unknown

Over: LRD FUNNEL RD

0.4M N JCT USH 12, Monroe, WI

Built 2010 ADT: 225

LRD GROVER ROAD

Unknown

Over: IH 90 EB-IH 94 EB

AT INTERSECTION, Monroe, WI

Built 2009 ADT: 15,950

LRD GROVER ROAD

Unknown

Over: IH 90 WB-IH 94 WB

AT INTERSECTION, Monroe, WI

Built 2009 ADT: 15,950

IH 94 EB

Unknown

Over: USH 12

0.6M E JCT CTH M, Monroe, WI

Built 2016 ADT: 1,400

IH 94 WB

Unknown

Over: USH 12

0.6M E JCT CTH M, Monroe, WI

Built 2015 ADT: 1,400

IH 94 EB

Unknown

Over: LRD EMPIRE AVENUE

1.2M E JCT CTH M, Monroe, WI

Built 2016 ADT: 80

IH 94 WB

Unknown

Over: LRD EMPIRE AVENUE

1.2M E JCT CTH M, Monroe, WI

Built 2015 ADT: 150

IH 90 EB

Unknown

Over: CTH M

0.1M S JCT STH 16, Monroe, WI

Built 2019 ADT: 700

IH 90 WB

Unknown

Over: CTH M

0.1M S JCT STH 16, Monroe, WI

Built 2019 ADT: 700

STH 16/71-WISC AVE

Unknown

Over: LRD MILWAUKEE AVE/CP RR

0.4M E JCT STH 16, Monroe, WI

Built 1939 ADT: 100

ELROY-SPARTA TRAIL

Unknown

Over: LRD KEEL ROAD

2.5M E JCT CTH AA, Monroe, WI

Built 1902 ADT: 940

CNW RR

Unknown

Over: LRD 10TH COURT

0.3M W JCT STH 71, Monroe, WI

Built 1915 ADT: 40

CNW RR

Unknown

Over: CTH E

0.1M S JCT STH 21, Monroe, WI

Built 1910 ADT: 850

CMSTPP RR

Unknown

Over: CTH E

0.9M S JCT STH 21, Monroe, WI

Built 1910 ADT: 850

ELROY-SPARTA TRAIL

Unknown

Over: LRD 13TH LANE

0.1M S JCT STH 71, Monroe, WI

Built 1900 ADT: 20

BIKE TRAIL (DNR)

Unknown

Over: LRD EAGLE DR

0.1M S JCT STH 71, Monroe, WI

Built 1880 ADT: 20

ABANDONED RAILROAD

Unknown

Over: CTH BB

0.3M E JCT STH 21, Monroe, WI

Built 1926 ADT: 250

CMSTPP RR

Unknown

Over: LRD EMBER DR

1.3M W JCT CTH U, Monroe, WI

Built 1965 ADT: 20

ELROY-SPARTA TRAIL

Unknown

Over: LRD TOWN RD

0.1M S JCT STH 71, Monroe, WI

Built 1902 ADT: 40

USH 41 SB

Unknown

Over: USH 141 NB

5.0M N JCT CTH S, Oconto, WI

Built 1993 ADT: 8,300

USH RAMP USH 141 S

Unknown

Over: USH 141 NB

5.2M N JCT CTH S, Oconto, WI

Built 1993 ADT: 8,300

USH RAMP USH 141 S

Unknown

Over: USH 41 SB

2.4M S JCT CTH J, Oconto, WI

Built 1993 ADT: 6,200

CTH S

Unknown

Over: USH41 - USH141

11.8M N JCT US141 TO S, Oconto, WI

Built 1999 ADT: 30,600

LRD ALLEN ROAD

Unknown

Over: USH 141 - USH 41

10.8M N JCT USH 141 TO S, Oconto, WI

Built 1999 ADT: 30,600

LRD GEANO BEACH RO

Unknown

Over: USH 41

2.0M N JCT CTH S, Oconto, WI

Built 2002 ADT: 27,800

CTH D SAMPSON RD

Unknown

Over: USH 41 - USH 141

3.0M N JCT CTH S, Oconto, WI

Built 2001 ADT: 27,800

LRD OAK ORCHARD RO

Unknown

Over: USH 41 - USH 141

4.0M N JCT CTH S, Oconto, WI

Built 2001 ADT: 26,500

USH 141 NB

Unknown

Over: STH 22

5.4M N JCT CTH CC, Oconto, WI

Built 2000 ADT: 4,100

Showing 1,901-1,950 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.