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

IH RAMP IH 41/USH

Unknown

Over: LRD UNDERWOOD PKWY

AT IH41, Milwaukee, WI

Built 2022 ADT: 500

UPRR

Unknown

Over: IH 41/USH 45-ZOO FREEWAY

2.6M N JCT IH 894 (F), Milwaukee, WI

Built 2021 ADT: 163,000

LRD W MEINECKE AVE

Unknown

Over: IH 41-ZOO FREEWAY

3.1M N JCT IH 894 TO W, Milwaukee, WI

Built 2021 ADT: 148,000

LRD CENTER STREET

Unknown

Over: IH 41/USH 45

2.6 MI NORTH JCT USH 18, Milwaukee, WI

Built 2016 ADT: 156,000

WAUWATOSA HS PED B

Unknown

Over: IH 41/USH 45 NB-ZOO FREE

3.5M N JCT IH 894 TO W, Milwaukee, WI

Built 2015 ADT: 156,000

LRD CLEVELAND AVEN

Unknown

Over: IH 41/894/USH 45

AT CLEVELAND AVENUE, Milwaukee, WI

Built 2013 ADT: 144,000

IH 794 WB

Unknown

Over: IH RAMP BROADWAY TO IH 7

AT IH 794 WB, Milwaukee, WI

Built 2015 ADT: 25,900

IH ON-RAMP, JACKSO

Unknown

Over: STH 32 / MILWAUKEE ST

AT IH 794 WB ON-RAMP, Milwaukee, WI

Built 2015 ADT: 4,400

IH 794 EB

Unknown

Over: IH RAMP BROADWAY ST-IH 7

I-794 EASTBOUND, Milwaukee, WI

Built 2014 ADT: 25,300

IH RAMP, IH-794 EB

Unknown

Over: STH 32/MILWAUKEE ST.

AT RAMP, IH 794 EB - VAN, Milwaukee, WI

Built 2014 ADT: 6,000

DAKOTA ST PED BRID

Unknown

Over: IH 41/894/USH 45

DAKOTA STREET, Milwaukee, WI

Built 2014 ADT: 125,000

IH RAMP, STH 100 -

Unknown

Over: LRD ZOO ACCESS ROAD TUNN

0.3 MI E OF STH 100, Milwaukee, WI

Built 2014 ADT: 100

IH RAMP, I-94 WB -

Unknown

Over: LRD SERVICE RD

ZOO MAINTNANCE, Milwaukee, WI

Built 2015 ADT: 25

LRD N PORT WASHING

Unknown

Over: STH 190-CAPITOL DR

0.1M E JCT IH 43 TO N, Milwaukee, WI

Built 2019 ADT: 35,500

IH RAMP, IH 794 EB

Unknown

Over: LRD N VAN BUREN ST

0.4M S JCT STH 32, Milwaukee, WI

Built 2016 ADT: 2,400

IH RAMP LAKE FRWY-

Unknown

Over: IH RAMP IH 794 EB TO JAC

0.3M S JCT STH 32, Milwaukee, WI

Built 2016 ADT: 3,400

LRD GREEN TREE RD

Unknown

Over: IH 43 N-S FREEWAY

X 4.0M N JCT STH 190 TO E, Milwaukee, WI

Built 2018 ADT: 96,700

LRD COUNTY LINE RD

Unknown

Over: IH 43-STH 32-N-S FREEWAY

1.1M N JCT STH 100 (K), Milwaukee, WI

Built 2023 ADT: 72,700

UP RR

Unknown

Over: IH 43 / N PORT WASHINGTO

X 3.2M N JCT STH 190/CAPI, Milwaukee, WI

Built 2023 ADT: 96,700

IH RAMP, IH 41/USH

Unknown

Over: STH 175 SB

1.2M S JCT CTH PP TO E, Milwaukee, WI

Built 1953 ADT: 3,900

IH RAMP IH 41/USH

Unknown

Over: STH 175 NB

0.6M N JCT USH 45, Milwaukee, WI

Built 1952 ADT: 5,200

CNW RR

Unknown

Over: STH 32-MARQUETTE AVE

2.6M N JCT STH 100 (A), Milwaukee, WI

Built 1930 ADT: 7,800

CMSTPP RR

Unknown

Over: STH 32-KINNICKINNIC ST

9.9M N JCT STH 100, Milwaukee, WI

Built 1910 ADT: 13,600

CMSTPP RR

Unknown

Over: STH 32-KINNICKINNIC ST

10.1M N JCT STH 100, Milwaukee, WI

Built 1909 ADT: 13,600

CNW RR

Unknown

Over: STH 32-KINNICKINNIC ST

10.1M N JCT STH 100, Milwaukee, WI

Built 1909 ADT: 13,600

CMSTPP RR

Unknown

Over: STH 32-MILWAUKEE ST

0.3M N JCT STH 59, Milwaukee, WI

Built 1916 ADT: 17,400

CMSTPP RR

Unknown

Over: STH 32-MILWAUKEE ST

0.3M N JCT STH 59, Milwaukee, WI

Built 1916 ADT: 17,400

CNW RR

Unknown

Over: STH 32-BROWN DEER RD

7.1M N JCT STH 190 (K), Milwaukee, WI

Built 1931 ADT: 9,600

PEDESTRIAN WALKWAY

Unknown

Over: USH 18 WB-STATE ST

0.3M W JCT STH 32 TO N, Milwaukee, WI

Built 1969 ADT: 10,750

CNW RR

Unknown

Over: STH 57-GREEN BAY AVE

2.3M N JCT STH 190 TO E, Milwaukee, WI

Built 1932 ADT: 16,900

CNW RR

Unknown

Over: STH 57-GREEN BAY AVE

3.0M N JCT STH 190 TO E, Milwaukee, WI

Built 1933 ADT: 18,500

CNW RR

Unknown

Over: LRD W NATIONAL AVE

1.5M E JCT IH 894 TO W, Milwaukee, WI

Built 1911 ADT: 14,500

CMSTPP RR

Unknown

Over: STH 190-CAPITOL DR

1.1M E JCT STH 145, Milwaukee, WI

Built 1930 ADT: 43,200

CMSTPP RR

Unknown

Over: STH 145 NB

1.1M N JCT STH 57 TO N, Milwaukee, WI

Built 1937 ADT: 24,700

CMSTPP RR

Unknown

Over: STH 38-CHASE AVE

4.4M N JCT CTH ZZ, Milwaukee, WI

Built 1938 ADT: 13,300

CMSTPP RR

Unknown

Over: STH 181-S 84TH ST

0.5M N JCT STH 59, Milwaukee, WI

Built 1936 ADT: 15,500

CNW RR

Unknown

Over: LRD PORT WASHINGTON RD

3.0M S JCT CTH W, Milwaukee, WI

Built 1936 ADT: 16,000

LRD S 68TH ST

Unknown

Over: IH41/IH43/IH 894

2.2M N JCT USH 45 TO S, Milwaukee, WI

Built 2020 ADT: 128,000

LRD 107TH ST

Unknown

Over: STH 145

1.2M S JCT USH 41 TO S; 3, Milwaukee, WI

Built 2022 ADT: 20,600

LRD SOUTH 60TH STR

Unknown

Over: IH-41/IH-43/IH-894

2.7 MI E JCT USH 45 TO S, Milwaukee, WI

Built 2022 ADT: 140,100

IH RAMP IH 43 SB T

Unknown

Over: IH RAMP IH 43 NB TO STH

AT JCT IH 43-STH 57-190, Milwaukee, WI

Built 2023 ADT: 6,000

IH 43 NB

Unknown

Over: LRD W HAMPTON AVE

0.8M W JCT STH 57, Milwaukee, WI

Built 2021 ADT: 17,400

IH 43 SB

Unknown

Over: LRD W HAMPTON AVE

0.8M W JCT STH 57, Milwaukee, WI

Built 2022 ADT: 17,400

IH 43 NB

Unknown

Over: LRD GLENDALE AVE

0.4M E JCT STH 57, Milwaukee, WI

Built 2023 ADT: 2,300

IH 43 SB

Unknown

Over: LRD GLENDALE AVE

0.4M E JCT STH 57, Milwaukee, WI

Built 2022 ADT: 3,400

IH 43-NB PORT WASH

Unknown

Over: LRD GLENDALE AVE

0.4M E JCT STH 57, Milwaukee, WI

Built 2022 ADT: 2,300

IH-43 NB

Unknown

Over: LRD ST PAUL AVE

UNDER 43, Milwaukee, WI

Built 2006 ADT: 2,900

IH 43 NB

Unknown

Over: IH 794

AT INTERSECTION, Milwaukee, WI

Built 2006 ADT: 100,000

IH RAMP IH 43 NB/I

Unknown

Over: LRD CANAL ST/CPRR/MENOMO

AT IH 43 NB, Milwaukee, WI

Built 2011 ADT: 4,900

IH S-E RAMP, IH 43

Unknown

Over: IH N-E RAMP, IH 43 SB -

AT ST PAUL AVE, Milwaukee, WI

Built 2008 ADT: 9,000

Showing 1,751-1,800 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.