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%.

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.

All Bridges in Wisconsin

CTH X

Poor

Over: BIG SLOUGH

2.6M S JCT CTH AA, Columbia, WI

Built 1958 Load: 45.4 t ADT: 451

STH 131-RAILROAD S

Poor

Over: BR KICKAPOO RIVER

0.9M N JCT STH 179, Crawford, WI

Built 1941 Load: 45.4 t ADT: 600

STH 131

Poor

Over: BR KICKAPOO RIVER

0.8M N JCT CTH E, Crawford, WI

Built 1941 Load: 45.4 t ADT: 210

LRD 7TH AVE

Poor

Over: SPRING BROOK

0.1M E JCT USH 45, Langlade, WI

Built 1935 Load: 45.4 t ADT: 1,697

CTH C

Poor

Over: PESHTIGO RIVER

2.1M E JCT CTH F, Marinette, WI

Built 1975 Load: 45.4 t ADT: 900

CTH KK

Poor

Over: JOHNSTOWN CREEK

2.3M N JCT CTH M, Rock, WI

Built 1977 Load: 45.4 t ADT: 178

CTH HH

Poor

Over: DELL CREEK

1.8M N JCT CTH WD, Sauk, WI

Built 1974 Load: 45.4 t ADT: 1,100

CTH C

Poor

Over: E BR HONEY CREEK

4.2M E JCT CTH PF, Sauk, WI

Built 1973 Load: 45.4 t ADT: 329

STH 131

Poor

Over: BR KICKAPOO RIVER

1.2M N JCT CTH W, Crawford, WI

Built 1940 Load: 47.0 t ADT: 210

CTH T

Poor

Over: JONES CREEK

0.1M E JCT STH 23, Iowa, WI

Built 1974 Load: 47.0 t ADT: 340

CTH XX

Poor

Over: BIG DRYWOOD CREEK

0.4 M N 80TH AVENUE, Chippewa, WI

Built 1932 Load: 48.6 t ADT: 550

IH 94 EB

Poor

Over: EAU GALLE RIVER

1.5M E JCT CTH B TO N, St. Croix, WI

Built 1958 Load: 48.6 t ADT: 17,800

CTH M

Poor

Over: DRAINAGE CREEK

4.7M N JCT CTH D, Barron, WI

Built 1985 Load: 50.2 t ADT: 920

CTH Z GRIFFITH A

Poor

Over: BUENA VISTA CREEK

0.9M E JCT STH 13, Wood, WI

Built 1959 Load: 50.2 t ADT: 1,704

STH 71-S RAILROAD

Poor

Over: DAVIS CREEK

3.3M E JCT CTH V, Monroe, WI

Built 1932 Load: 51.8 t ADT: 2,600

CTH A

Poor

Over: CRYSTAL SPRINGS CREEK

1.8M N JCT STH 35, Pierce, WI

Built 1930 Load: 56.7 t ADT: 186

LRD WHALEN RD

Poor

Over: S FK BEAVER CREEK

0.2M N JCT CTH D, Trempealeau, WI

Built 1968 Load: 56.7 t ADT: 88

STH 13

Poor

Over: CHIPPEWA RIVER 33

9.1M N JCT CTH F, Ashland, WI

Built 1997 Load: 58.3 t ADT: 1,700

LRD NORTH AVE - WE

Poor

Over: MENOMONEE RIVER

0.6M E JCT STH 100, Milwaukee, WI

Built 1934 Load: 71.6 t ADT: 18,300

LRD NORTH AVE EAST

Poor

Over: MENOMONEE RIVER

0.7M E JCT STH 100, Milwaukee, WI

Built 1934 Load: 71.6 t ADT: 18,300

LRD IRR (ENSINGER

Structurally Deficient

Over: BRUNSWEILER RIVER

0.7M E JCT STH 13, Ashland, WI

Built 1920 ADT: 20

LRD CASBERG COULEE

Structurally Deficient

Over: LONG COULEE CREEK

0.2M E JCT CTH V, La Crosse, WI

Built 1984 ADT: 265

LRD N 50TH ST (DEA

Structurally Deficient

Over: MENOMONEE RIVER

0.2M S JCT STATE ST, Milwaukee, WI

Built 1976 ADT: 1

LRD PEDESTRIAN (WO

Structurally Deficient

Over: MILWAUKEE RIVER

0.5M E JCT USH 45, Washington, WI

Built 1891

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

LRD CENTER RD

Structurally Deficient

Over: N. FK. POPPLE RIVER

1.3M W JCT CTH E, Clark, WI

Built 1963 Load: 4.9 t ADT: 58

LRD MAIN ST

Structurally Deficient

Over: E FK HALLS CREEK

0.1M N JCT CTH F, Clark, WI

Built 1965 Load: 4.9 t ADT: 58

LRD PATZAU RD

Structurally Deficient

Over: BALSAM CREEK

0.7M E JCT CTH B, Douglas, WI

Built 1968 Load: 4.9 t ADT: 86

LRD S MAIL RD

Structurally Deficient

Over: EAU CLAIRE RIVER

0.1M S JCT CTH Y, Douglas, WI

Built 1967 Load: 4.9 t ADT: 220

LRD LIDBERG BRIDGE

Structurally Deficient

Over: EAU CLAIRE RIVER

1.0M N JCT CTH G, Douglas, WI

Built 1950 Load: 4.9 t ADT: 75

LRD 16TH RD

Structurally Deficient

Over: CNW RR

1.3M S JCT CTH B, Marquette, WI

Built 1950 Load: 4.9 t ADT: 47

LRD 357TH AVE

Structurally Deficient

Over: INDIAN CREEK

1.6M N JCT CTH E, Polk, WI

Built 1964 Load: 4.9 t ADT: 43

LRD TOWN PARK DR (

Structurally Deficient

Over: W BR MONTREAL RIVER

0.6M S JCT USH 2, Iron, WI

Built 1957 Load: 6.5 t ADT: 1

LRD SHORT CUT RD

Structurally Deficient

Over: MULLET RIVER

0.1M S JCT CTH O, Sheboygan, WI

Built 1970 Load: 6.5 t ADT: 141

LRD ELM AVE

Structurally Deficient

Over: W BR BIG EAU PLEINE RIVE

1.4M E JCT STH 13, Taylor, WI

Built 1959 Load: 6.5 t ADT: 58

LRD CLEOPHAS RD

Structurally Deficient

Over: RACCOON CREEK

0.7M E JCT CTH K, Rock, WI

Built 1918 Load: 6.8 t ADT: 82

LRD AFTER HOURS RD

Structurally Deficient

Over: NEBAGAMON CREEK

0.7M N JCT CTH B, Douglas, WI

Built 1925 Load: 8.1 t ADT: 53

LRD HICKORY ST

Structurally Deficient

Over: W BR FOND DU LAC RIVER

0.4M N JCT USH 151, Fond du Lac, WI

Built 1965 Load: 8.1 t ADT: 3,900

LRD 14TH RD

Structurally Deficient

Over: CNW RR

0.7M S JCT CTH F, Marquette, WI

Built 1940 Load: 8.1 t ADT: 95

LRD SAG CITY RD

Structurally Deficient

Over: RUSH CREEK

2.5M S JCT STH 82, Vernon, WI

Built 1965 Load: 8.1 t ADT: 94

LRD PINE LAKE RD

Structurally Deficient

Over: WOLF RIVER

2.9M S JCT STH 32, Forest, WI

Built 1930 Load: 9.7 t ADT: 64

LRD HAGEDORN RD

Structurally Deficient

Over: DUCK CREEK

0.6M E JCT CTH D, Jefferson, WI

Built 1940 Load: 9.7 t ADT: 58

LRD GLENDALE RD (D

Structurally Deficient

Over: WAUSAUKEE RIVER

0.3M W JCT CTH C, Marinette, WI

Built 1920 Load: 9.7 t ADT: 50

LRD OLD 64 ROAD

Structurally Deficient

Over: PESHTIGO BROOK

3.2M N JCT STH 64, Oconto, WI

Built 1980 Load: 9.7 t ADT: 110

LRD LARKIN RD

Structurally Deficient

Over: HOLMES CREEK

3 MI EAST OF STH 13, Price, WI

Built 1960 Load: 9.7 t ADT: 57

LRD ELM AVE

Structurally Deficient

Over: DEER CREEK

2.2M E JCT STH 13, Taylor, WI

Built 1970 Load: 9.7 t ADT: 58

LRD BUSSE RD

Structurally Deficient

Over: PEWAUKEE RIVER

0.6M N JCT CTH JJ, Waukesha, WI

Built 1950 Load: 9.7 t ADT: 117

CTH G

Structurally Deficient

Over: YELLOW RIVER

0.8 M N S & G INT, Chippewa, WI

Built 1939 Load: 11.3 t ADT: 320

Showing 14,651-14,700 of 14,851 bridges

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.