Total Bridges
14,851
Public highway bridges in Wisconsin
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
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)
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
45
South Carolina
6.10% top marginal rate
55
Wisconsin
6.13% top marginal rate
37
North Carolina
6.16% top marginal rate
15
Hawaii
6.47% top marginal rate
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
PoorOver: BEAR CREEK
1.2M N JCT STH 76, Outagamie, WI
Built 1958 Load: 1.6 t ADT: 1,175
LRD WOODFORD DR
PoorOver: RAILS TO TRAILS TRAIL
0.3M E JCT USH 45, Washington, WI
Built 1910 Load: 1.6 t ADT: 47
LRD ACCESS RD
PoorOver: MENASHA CHANNEL
ACCESS TO PARKING LOT BY, Winnebago, WI
Built 1960 Load: 1.6 t ADT: 20
CTH A
Structurally DeficientOver: 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 DeficientOver: EVERGREEN CREEK
0.1M N JCT STH 64, Langlade, WI
Built 1916 Load: 3.2 t ADT: 6
LRD CORNELL LANE (
Structurally DeficientOver: BR COON CREEK
0.1M E JCT USH 14, Vernon, WI
Built 1985 Load: 3.2 t ADT: 10
All Bridges in Wisconsin
IH S-W RAMP, IH 43
UnknownOver: IH 43 & IH 794
MARQUETTE INTERCHANGE, Milwaukee, WI
Built 2008 ADT: 100,000
IH S-W RAMP, IH 43
UnknownOver: IH E-S RAMP, IH 794 WB -
AT IH94, Milwaukee, WI
Built 2008 ADT: 11,400
IH S-E RAMP, IH 43
UnknownOver: LRD ST PAUL AVE
1.2M N OF IH-43-94/GREEN, Milwaukee, WI
Built 2006 ADT: 4,900
IH RAMP IH 43 NB -
UnknownOver: IH 794
AT IH43, Milwaukee, WI
Built 2008 ADT: 91,200
IH 43 SB
UnknownOver: IH N-E RAMP
AT IH43, Milwaukee, WI
Built 2008 ADT: 14,300
IH 43 SB
UnknownOver: IH 794
AT IH43, Milwaukee, WI
Built 2008 ADT: 110,000
IH N-E RAMP, IH 43
UnknownOver: IH 794
AT INTERSECTION, Milwaukee, WI
Built 2008 ADT: 100,000
IH N-E RAMP, IH 43
UnknownOver: LRD W ST PAUL AVE
N TO E RAMP, Milwaukee, WI
Built 2008 ADT: 6,700
IH N-W RAMP, IH 43
UnknownOver: LRD N 13TH ST & W TORY H
AT 43NB RAMP, Milwaukee, WI
Built 2006 ADT: 11,600
IH RAMP WISC AV-IH
UnknownOver: IH 794
MARQUETTE INTERCHANGE, Milwaukee, WI
Built 2008 ADT: 100,000
IH RAMP WISC AVE -
UnknownOver: IH RAMP IH 43 SB - IH 94
MARQUETTE INTERCHANGE, Milwaukee, WI
Built 2008 ADT: 11,400
IH 794 EB
UnknownOver: LRD S 13TH ST
AT CP RR, Milwaukee, WI
Built 2006 ADT: 5,100
IH 794 EB
UnknownOver: W-N RAMP IH 94 EB-IH 43
0.80 M E OFIH-94/16TH ST, Milwaukee, WI
Built 2006 ADT: 38,100
IH-794 EB
UnknownOver: LRD JAMES LOVELL ST
AT 794, Milwaukee, WI
Built 2006 ADT: 29,300
IH-794 EB
UnknownOver: LRD 3RD ST
AT 794, Milwaukee, WI
Built 2006 ADT: 2,540
IH 794 EB
UnknownOver: IH 2ND ST/RAMP TO IH 43
AT 2ND ST UNDER IH 794, Milwaukee, WI
Built 2006 ADT: 21,300
IH RAMP, IH 94 WB
UnknownOver: LRD RAMP, IH 794 EB - ST
AT 794, Milwaukee, WI
Built 2006 ADT: 28,500
IH RAMP, IH 43 NB/
UnknownOver: LRD 2ND ST
1.5M E OF IH-94/16TH ST, Milwaukee, WI
Built 2006 ADT: 4,400
IH W-S RAMP, IH 94
UnknownOver: IH RAMP, IH 94 EB - IH 4
AT 43, Milwaukee, WI
Built 2006 ADT: 36,900
IH W-N RAMP IH94 E
UnknownOver: LRD 13TH ST
1.0M S, Milwaukee, WI
Built 2006 ADT: 5,100
LRD TORY HILL-MICH
UnknownOver: IH W-N RAMP,I 94 EB-I 43
AT TORY HILL, Milwaukee, WI
Built 2004 ADT: 38,100
IH 794 WB
UnknownOver: LRD 13TH ST
MARQUETTE INETRCHANGE, Milwaukee, WI
Built 2008 ADT: 5,900
IH 794 WB
UnknownOver: IH W-N RAMP 94EBTO43NB
MARQUETTE INETRCHANGE, Milwaukee, WI
Built 2008 ADT: 38,100
IH 794 WB
UnknownOver: LRD 6TH ST
AT 794, Milwaukee, WI
Built 2008 ADT: 25,800
IH 794 WB
UnknownOver: LRD 4TH ST
AT 794, Milwaukee, WI
Built 2008 ADT: 2,540
IH 794 WB
UnknownOver: IH E-N ENTRANCE RAMP
AT 794, Milwaukee, WI
Built 2008 ADT: 7,100
IH 794 WB
UnknownOver: LRD 6TH ST
AT INTERSECTION, Milwaukee, WI
Built 2008 ADT: 26,200
IH 794 WB
UnknownOver: IH E-N ENTRANCE RAMP
1.7M W OF STH32, Milwaukee, WI
Built 2008 ADT: 11,500
IH RAMP IH 794 WB
UnknownOver: LRD RAMP794E TO JAMES LO
1.7M W OF STH32, Milwaukee, WI
Built 2008 ADT: 3,700
IH RAMP E-N I794WB
UnknownOver: LRD TORY HILL
AT 794, Milwaukee, WI
Built 2008 ADT: 7,200
IH E-N RAMP, IH 79
UnknownOver: IH W TO N RAMP(94EB-43NB
AT INTERSECTION, Milwaukee, WI
Built 2008 ADT: 34,100
IH E - S RAMP (IH
UnknownOver: IH W-S RAMP, IH 94 EB -
MARQUETTE INTERCHANGE, Milwaukee, WI
Built 2008 ADT: 11,400
IH E-S RAMP, IH 94
UnknownOver: IH 794
MARQUETTE INETRCHANGE, Milwaukee, WI
Built 2008 ADT: 66,800
IH RAMP E-S,I794WB
UnknownOver: CANADIAN PACIFIC RR & CA
AT RAMP E-S,I794WB-I94 EB, Milwaukee, WI
Built 2011 ADT: 4,000
C & NW TRANS CO
UnknownOver: LRD GRANGE AVE
1.3M W JCT STH 62, Milwaukee, WI
Built 1939 ADT: 600
CNW RR
UnknownOver: LRD MILL RD
0.4M E JCT STH 32, Milwaukee, WI
Built 1910 ADT: 6,300
PEDESTRIAN WALKWAY
UnknownOver: LRD N LINCOLN MEMORIAL D
1.5M N JCT USH 18, Milwaukee, WI
Built 1955 ADT: 16,100
LRD RAMP STATE ST-
UnknownOver: LRD W STATE ST
0.5M N JCT USH 18, Milwaukee, WI
Built 1959 ADT: 8,200
OAK LEAF TRAIL
UnknownOver: LRD MILWAUKEE RIVER PARK
0.8M E JCT STH 57, Milwaukee, WI
Built 1950 ADT: 1,200
UNION PACIFIC RAIL
UnknownOver: LRD OAK CREEK PARKWAY
0.2M W JCT STH 32, Milwaukee, WI
Built 1900 ADT: 1,500
OAK LEAF BIKE TRAI
UnknownOver: LRD HUBBARD PARK DR
AT BIKE TRAIL, Milwaukee, WI
Built 1895 ADT: 50
PEDESTRIAN ACCESS
UnknownOver: LRD RAVINE RD
0.2M E JCT STH 32, Milwaukee, WI
Built 1940 ADT: 1,000
CMSTPP RR
UnknownOver: LRD E FLORIDA ST
0.1M E JCT IH 43, Milwaukee, WI
Built 1916 ADT: 10,000
CNW RR
UnknownOver: LRD E GREENFIELD AVE
0.2M E JCT STH 32, Milwaukee, WI
Built 1915 ADT: 3,300
CMSTPP RR
UnknownOver: LRD E GREENFIELD AVE
0.1M E JCT STH 32, Milwaukee, WI
Built 1915 ADT: 17,000
CMSTPP RR
UnknownOver: LRD E NATIONAL AVE
0.2M E JCT STH 32, Milwaukee, WI
Built 1909 ADT: 17,000
CNW RR
UnknownOver: LRD E NATIONAL AVE
0.1M E JCT IH 43, Milwaukee, WI
Built 1916 ADT: 16,000
CNW RR
UnknownOver: LRD E NATIONAL AVE
0.1M E JCT STH 32, Milwaukee, WI
Built 1916 ADT: 16,000
CNW RR
UnknownOver: LRD E NATIONAL AVE
0.1M E JCT STH 32, Milwaukee, WI
Built 1916 ADT: 16,000
CNW RR
UnknownOver: LRD E WASHINGTON AVE
0.1M E JCT STH 32, Milwaukee, WI
Built 1915 ADT: 15,000
Showing 1,801-1,850 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.
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.
| Publisher | Kiznis Studio |
| Sources | FHWA National Bridge Inventory, public U.S. government datasets |