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 W CIRCLE DRIVE

Good

Over: SOMO RIVER

0.7M S JCT USH 8, Lincoln, WI

Built 1990 Load: 37.3 t ADT: 37

LRD TESCH ROAD

Good

Over: NEW WOOD RIVER

1.0M E JCT CTH E, Lincoln, WI

Built 1994 Load: 37.3 t ADT: 46

LRD BRIDGE ROAD (D

Good

Over: PRAIRIE RIVER

0.1M E JCT STH 17, Lincoln, WI

Built 1998 Load: 37.3 t ADT: 5

LRD SCHIELKE RD

Good

Over: N BR PINE RIVER

1.2M N JCT CTH C, Lincoln, WI

Built 2005 Load: 37.3 t ADT: 95

CTH O

Good

Over: MOLASH CREEK

1.3M E JCT STH 42, Manitowoc, WI

Built 1982 Load: 37.3 t ADT: 2,075

STH 42

Good

Over: MANITOWOC RIVER

AT MANITOWOC RIVER, Manitowoc, WI

Built 1987 Load: 37.3 t ADT: 20,634

LRD ZANDER RD

Good

Over: CNW RR

0.7M W JCT CTH T, Manitowoc, WI

Built 1987 Load: 37.3 t ADT: 239

USH 10/MARITIME DR

Good

Over: LITTLE MANITOWOC RIVER

AT LITTLE MANITOWOC RIVER, Manitowoc, WI

Built 1991 Load: 37.3 t ADT: 8,900

CTH W

Good

Over: MANITOWOC RIVER

2.6M N JCT USH 151 TO N, Manitowoc, WI

Built 1993 Load: 37.3 t ADT: 1,900

CTH B

Good

Over: W TWIN RIVER

0.1M S JCT CTH VV, Manitowoc, WI

Built 1996 Load: 37.3 t ADT: 6,800

LRD E SPRING VALLE

Good

Over: MEEME RIVER

0.2M W JCT STH 42, Manitowoc, WI

Built 2004 Load: 37.3 t ADT: 74

LRD STEINTHAL RD

Good

Over: SHEBOYGAN RIVER

0.6M S JCT CTH XX, Manitowoc, WI

Built 2007 Load: 37.3 t ADT: 156

LRD S CLEVELAND RD

Good

Over: PIGEON RIVER

0.2M W JCT STH 42, Manitowoc, WI

Built 2011 Load: 37.3 t ADT: 153

CTH K

Good

Over: BRANCH RIVER

0.8M E JCT CTH G, Manitowoc, WI

Built 1956 Load: 37.3 t ADT: 930

LRD OWL RIDGE RD

Good

Over: BIG SANDY CREEK

0.1M E JCT CTH J, Marathon, WI

Built 1990 Load: 37.3 t ADT: 130

LRD CHESTNUT ROAD

Good

Over: PORKY CREEK

0.7M S JCT STH 29, Marathon, WI

Built 1990 Load: 37.3 t ADT: 70

LRD KINGTON RD

Good

Over: LITTLE EAU PLEINE RIVER

0.7M E JCT STH 13, Marathon, WI

Built 1993 Load: 37.3 t ADT: 54

LRD GLENVIEW RD

Good

Over: E BR BIG SANDY CREEK

1.1M E JCT CTH Q, Marathon, WI

Built 1993 Load: 37.3 t ADT: 55

STH 29 WB

Good

Over: PET BROOK

2.3M W JCT CTH S, Marathon, WI

Built 1998 Load: 37.3 t ADT: 8,700

LRD CAMPUS DRIVE

Good

Over: BOS CREEK

CITY OF WAUSAU, Marathon, WI

Built 2000 Load: 37.3 t ADT: 4,160

LRD GULDAN ST

Good

Over: BR LITTLE EAU PLEINE RIV

2.4M E JCT CTH M, Marathon, WI

Built 2002 Load: 37.3 t ADT: 135

LRD LESTER STREET

Good

Over: LITTLE SANDY CREEK

0.4M S JCT CTH N, Marathon, WI

Built 2003 Load: 37.3 t ADT: 580

LRD BLACKBERRY RD

Good

Over: HAMAN CREEK

1.3M W JCT STH 97, Marathon, WI

Built 2002 Load: 37.3 t ADT: 120

CTH S

Good

Over: TR. BIG RIB RIVER

0.8M N JCT STH 29, Marathon, WI

Built 2002 Load: 37.3 t ADT: 727

STH 29

Good

Over: WCL

1.2M E OF USH 51N, Marathon, WI

Built 2008 Load: 37.3 t ADT: 7,400

LRD LRD N. FREY RO

Good

Over: CARLSON CREEK

2.1M S. JCT STH 153, Marathon, WI

Built 2002 Load: 37.3 t ADT: 274

STH 29 EB OFF RAMP

Good

Over: PLOVER RIVER

3.85M E JCT CTH Q, Marathon, WI

Built 2005 Load: 37.3 t ADT: 1,600

LRD JUNCTION RD

Good

Over: BR BIG SANDY CREEK

1.6M E JCT STH 52, Marathon, WI

Built 2006 Load: 37.3 t ADT: 114

LRD FOREST RD (DEA

Good

Over: LITTLE EAU CLAIRE RIVER

1.4M W JCT STH 153, Marathon, WI

Built 2005 Load: 37.3 t ADT: 60

CTH L

Good

Over: MCGINNIS CREEK

2.8 MILES W JCT CTH S, Marathon, WI

Built 2009 Load: 37.3 t ADT: 641

CTH O

Good

Over: HOG CREEK

0.3M S JCT STH 153, Marathon, WI

Built 2016 Load: 37.3 t ADT: 1,200

USH 141

Good

Over: LOWER MIDDLE INLET CREEK

3.7M N JCT CTH W, Marinette, WI

Built 1989 Load: 37.3 t ADT: 5,500

LRD HARPER RD

Good

Over: RAT RIVER

1.8M N JCT CTH C, Marinette, WI

Built 1996 Load: 37.3 t ADT: 75

LRD PIKE RIVER RD

Good

Over: PIKE RIVER

8.3M N JCT STH 180, Marinette, WI

Built 1992 Load: 37.3 t ADT: 150

LRD 19TH RD

Good

Over: S BR BEAVER CREEK

0.7M S JCT CTH P, Marinette, WI

Built 1996 Load: 37.3 t ADT: 150

USH 141 NB

Good

Over: CEDAR SWAMP CREEK

AT CEDAR SWAMP CREEK, Marinette, WI

Built 2005 Load: 37.3 t ADT: 5,100

IH USH51-IH39NB

Good

Over: CHAFFEE CREEK

1.6M N JCT CTH Z, Marquette, WI

Built 1987 Load: 37.3 t ADT: 6,650

CTH J

Good

Over: MONTELLO RIVER

0.3M S JCT CTH B TO N, Marquette, WI

Built 1990 Load: 37.3 t ADT: 770

LRD 14TH AVE

Good

Over: MECAN RIVER

1.5M S JCT CTH JJ, Marquette, WI

Built 1999 Load: 37.3 t ADT: 60

CTH N

Good

Over: MECAN RIVER

2.0M N JCT CTH J TO E, Marquette, WI

Built 1999 Load: 37.3 t ADT: 550

LRD 11TH RD

Good

Over: MONTELLO RIVER

0.8M N JCT CTH B, Marquette, WI

Built 1999 Load: 37.3 t ADT: 310

LRD EMBER LANE

Good

Over: MONTELLO RIVER

0.6M E JCT CTH B, Marquette, WI

Built 1998 Load: 37.3 t ADT: 55

CTH C

Good

Over: MECAN RIVER

1.3M S JCT STH 23, Marquette, WI

Built 2000 Load: 37.3 t ADT: 520

LRD 15TH DR

Good

Over: MECAN RIVER

0.3M S JCT CTH Y, Marquette, WI

Built 2004 Load: 37.3 t ADT: 50

CTH J

Good

Over: MECAN RIVER

0.6 M E JCT CTH N TO NORT, Marquette, WI

Built 2004 Load: 37.3 t ADT: 1,560

STH 23

Good

Over: MECAN RIVER

0.8M E JCT CTH N, Marquette, WI

Built 2020 Load: 37.3 t ADT: 3,000

CTH M

Good

Over: WEST BRANCH OF WOLF RIVE

0.02M N JCT STH 47, Menominee, WI

Built 2020 Load: 37.3 t ADT: 602

LRD W COLLEGE AVE

Good

Over: BR. ROOT RIVER

1.2M W JCT CTHU, Milwaukee, WI

Built 1999 Load: 37.3 t ADT: 1,600

CTH E SILVER SPRI

Good

Over: MILWAUKEE RIVER

0.6M E JCT STH 57, Milwaukee, WI

Built 1991 Load: 37.3 t ADT: 15,600

LRD S 13TH ST

Good

Over: OAK CREEK

0.1M S JCT STH 100, Milwaukee, WI

Built 1995 Load: 37.3 t ADT: 9,800

Showing 11,451-11,500 of 14,851 bridges

Related

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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.