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 43 NB T

Unknown

Over: IH 43 SB

1.1M S JCT USH 45 TO S, Waukesha, WI

Built 1969 ADT: 26,600

IH 43 SB

Unknown

Over: LRD CALHOUN RD

0.7M S JCT CTH I, Waukesha, WI

Built 1969 ADT: 3,800

IH 43 NB

Unknown

Over: LRD CALHOUN RD

0.7M S JCT CTH I, Waukesha, WI

Built 1969 ADT: 3,800

IH 43 SB

Unknown

Over: LRD MARTIN RD

0.5M N JCT CTH HH, Waukesha, WI

Built 1969 ADT: 2,300

IH 43 NB

Unknown

Over: LRD MARTIN RD

0.5M N JCT CTH HH, Waukesha, WI

Built 1969 ADT: 2,300

CTH Y (RACINE AVE)

Unknown

Over: IH 43

3.5M N JCT STH 164, Waukesha, WI

Built 1969 ADT: 55,200

LRD CROWBAR DR

Unknown

Over: IH 43

1.9M N JCT STH 164, Waukesha, WI

Built 1969 ADT: 40,800

IH 43 NB

Unknown

Over: CTH U

1.9M N JCT CTH F, Waukesha, WI

Built 1969 ADT: 1,700

IH 43 SB

Unknown

Over: CTH U

1.9M N JCT CTH F, Waukesha, WI

Built 1969 ADT: 1,700

IH 43 NB

Unknown

Over: LRD EVERGREEN RD

0.1M S JCT CTH ES, Waukesha, WI

Built 1968 ADT: 620

IH 43 SB

Unknown

Over: LRD EVERGREEN RD

0.1M S JCT CTH ES, Waukesha, WI

Built 1968 ADT: 2,100

LRD CENTER DRIVE

Unknown

Over: IH 43

5.4M N JCT STH 83 TO N, Waukesha, WI

Built 1971 ADT: 34,800

IH 43 SB

Unknown

Over: LRD HILO DR

0.2M S JCT CTH ES, Waukesha, WI

Built 1970 ADT: 500

IH 43 NB

Unknown

Over: LRD HILO DR

0.2M S JCT CTH ES, Waukesha, WI

Built 1970 ADT: 500

IH 43 SB

Unknown

Over: LRD OAKDALE DR

0.5M E JCT CTH ES, Waukesha, WI

Built 1970 ADT: 280

IH 43 NB

Unknown

Over: LRD OAKDALE DR

0.5M E JCT CTH ES, Waukesha, WI

Built 1971 ADT: 260

STH 83

Unknown

Over: IH 43

5.6M N JCT STH 20 TO E, Waukesha, WI

Built 1971 ADT: 26,900

IH 43 NB

Unknown

Over: LRD EDGEWOOD AVE

0.9M E JCT CTH ES, Waukesha, WI

Built 1971 ADT: 2,100

IH 43 SB

Unknown

Over: LRD EDGEWOOD AVE

0.9M E JCT CTH ES, Waukesha, WI

Built 1971 ADT: 2,100

IH 43 NB

Unknown

Over: CTH I (BELOIT RD)

3.5M E JCT CTH ES, Waukesha, WI

Built 1968 ADT: 7,900

IH 43 SB

Unknown

Over: CTH I (BELOIT RD)

3.5M E JCT CTH ES, Waukesha, WI

Built 1968 ADT: 7,900

WATER ST SKYWALK P

Unknown

Over: IH 41/USH 45

1.3M N JCT STH 100 TO N, Waukesha, WI

Built 1970 ADT: 81,400

CTH F NB

Unknown

Over: IH 94

8.7M E JCT STH 83 TO N, Waukesha, WI

Built 1977 ADT: 117,000

CMSTPP RR

Unknown

Over: CTH M (NORTH AVE)

2.3M W JCT STH 100, Waukesha, WI

Built 1973 ADT: 16,000

STH 67

Unknown

Over: STH 16/STH 67 NB

1.2M E JCT STH 67 TO N, Waukesha, WI

Built 1992 ADT: 21,700

LRD GIFFORD ROAD

Unknown

Over: STH 16

2.1M E JCT STH 67, Waukesha, WI

Built 1989 ADT: 28,100

STH 16 WB

Unknown

Over: CTH P (SAWYER ROAD)

2.2M N JCT CTH B, Waukesha, WI

Built 1990 ADT: 4,000

STH 16 EB

Unknown

Over: CTH P (SAWYER ROAD)

2.1M N JCT CTH B, Waukesha, WI

Built 1990 ADT: 4,000

CMST PP RR

Unknown

Over: CTH P (SAWYER RD)

2.0M N JCT CTH B, Waukesha, WI

Built 1989 ADT: 3,600

CTH C

Unknown

Over: STH 16

1.5M E JCT CTH PP, Waukesha, WI

Built 1979 ADT: 32,600

STH 83

Unknown

Over: STH 16

3.6M E JCT CTH PP, Waukesha, WI

Built 1976 ADT: 39,200

STH 83

Unknown

Over: LRD VETTELSON RD

0.8M W JCT CTH E, Waukesha, WI

Built 1976 ADT: 1,200

STH 16 WB

Unknown

Over: CTH E - NORTH AVE

0.7M S JCT CTH K, Waukesha, WI

Built 1976 ADT: 6,500

STH 16 EB

Unknown

Over: CTH E - NORTH AVE

0.7M S JCT CTH K, Waukesha, WI

Built 1976 ADT: 6,500

CTH KC (MERTON AVE

Unknown

Over: STH 16

1.9M E JCT STH 83 TO N, Waukesha, WI

Built 1975 ADT: 39,600

CTH KE

Unknown

Over: STH 16

3.0M E JCT STH 83 TO N, Waukesha, WI

Built 1974 ADT: 39,600

CTH KF

Unknown

Over: STH 16

2.3M E JCT CTH KE TO S, Waukesha, WI

Built 1974 ADT: 43,400

STH 16 WB

Unknown

Over: STH 190

AT JCT STH 16-STH 190, Waukesha, WI

Built 1983 ADT: 27,600

STH 16 EB

Unknown

Over: STH 190

AT JCT STH 16-STH 190, Waukesha, WI

Built 1983 ADT: 27,600

STH 16 WB

Unknown

Over: LRD HICKORY STREET

0.6M E JCT CAPITOL DR, Waukesha, WI

Built 1983 ADT: 100

STH 16 EB

Unknown

Over: LRD HICKORY STREET

0.6M E JCT CAPITOL DR, Waukesha, WI

Built 1983 ADT: 100

STH RAMP STH 16 WB

Unknown

Over: LRD HICKORY STREET

AT JCT STH 16-STH 190, Waukesha, WI

Built 1983 ADT: 100

STH RAMP, STH 190

Unknown

Over: LRD HICKORY STREET

AT JCT STH 16-STH 190, Waukesha, WI

Built 1983 ADT: 100

STH 16 WB

Unknown

Over: LRD E.WISCONSIN AVE

AT JCT STH 16, Waukesha, WI

Built 1983 ADT: 3,700

STH 16 EB

Unknown

Over: LRD E. WISCONSIN AVE

VILLAGE OF PEWAUKEE, Waukesha, WI

Built 1983 ADT: 3,700

CTH JJ

Unknown

Over: STH 16

4.5M E JCT CTH KE, Waukesha, WI

Built 1983 ADT: 38,700

STH 190/CAPITOL DR

Unknown

Over: LRD DUPLAINVILLE RD

TOWN OF PEWAUKEE, Waukesha, WI

Built 1983 ADT: 2,100

STH 100

Unknown

Over: IH 41-USH 45

0.2M N JCT STH 100 (J), Waukesha, WI

Built 1982 ADT: 83,800

CTH F SB (REDFORD

Unknown

Over: LRD GREEN RD

0.9M E JCT CTH F, Waukesha, WI

Built 1987 ADT: 1,200

CTH JJ (BLUEMOUND

Unknown

Over: CTH F

AT CTH JJ, Waukesha, WI

Built 1989 ADT: 21,400

Showing 2,651-2,700 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.