Wisconsin bridges
Wisconsin reports 14,498 bridges and culverts across 72 counties. 976 (6.7%) are rated in poor condition, and 842 are posted with load limits or closed. The oldest structure still in the inventory dates from 1887.
Find a bridge in Wisconsin
Type at least two characters, or pick a condition or type, to search every bridge in the state.
Counties
Circle size reflects the number of bridges- Adams County 42
- Ashland County 84
- Barron County 319
- Bayfield County 103
- Brown County 473
- Buffalo County 239
- Burnett County 68
- Calumet County 63
- Chippewa County 359
- Clark County 298
- Columbia County 182
- Crawford County 211
- Dane County 593
- Dodge County 213
- Door County 33
- Douglas County 136
- Dunn County 244
- Eau Claire County 235
- Florence County 20
- Fond du Lac County 252
- Forest County 53
- Grant County 381
- Green County 241
- Green Lake County 48
- Iowa County 209
- Iron County 48
- Jackson County 214
- Jefferson County 182
- Juneau County 174
- Kenosha County 110
- Kewaunee County 92
- La Crosse County 249
- Lafayette County 217
- Langlade County 78
- Lincoln County 158
- Manitowoc County 277
- Marathon County 531
- Marinette County 135
- Marquette County 81
- Menominee County 25
- Milwaukee County 897
- Monroe County 374
- Oconto County 150
- Oneida County 61
- Outagamie County 299
- Ozaukee County 106
- Pepin County 57
- Pierce County 250
- Polk County 72
- Portage County 183
- Price County 107
- Racine County 133
- Richland County 297
- Rock County 304
- Rusk County 150
- Sauk County 275
- Sawyer County 98
- Shawano County 155
- Sheboygan County 239
- St. Croix County 297
- Taylor County 176
- Trempealeau County 259
- Vernon County 334
- Vilas County 29
- Walworth County 215
- Washburn County 49
- Washington County 164
- Waukesha County 370
- Waupaca County 168
- Waushara County 55
- Winnebago County 265
- Wood County 240
Condition
Good47%(6,749)
Fair47%(6,773)
Poor7%(976)
Counties with the highest share of poor bridges
- Polk County22.2% of 72
- Oneida County19.7% of 61
- Calumet County17.5% of 63
- Sawyer County17.3% of 98
- Douglas County14.7% of 136
Structure types
| Structure type | Bridges | Share |
|---|---|---|
| Stringer/Multi-beam or Girder | 6,388 | 44.1% |
| Slab | 4,921 | 33.9% |
| Culvert | 2,170 | 15.0% |
| Box Beam or Girders - Multiple | 400 | 2.8% |
| Channel Beam | 188 | 1.3% |
| Arch - Deck | 114 | 0.8% |
| Frame | 91 | 0.6% |
| Girder and Floorbeam System | 73 | 0.5% |
| Box Beam or Girders - Single or Spread | 40 | 0.3% |
| Truss - Thru | 36 | 0.2% |
| Movable - Bascule | 29 | 0.2% |
| Tee Beam | 23 | 0.2% |
| Movable - Lift | 8 | 0.1% |
| Arch - Thru | 7 | 0.0% |
| Truss - Deck | 6 | 0.0% |
| Other | 3 | 0.0% |
| Segmental Box Girder | 1 | 0.0% |
When Wisconsin's bridges were built
Busiest
- IH 41 NB over Sth 55FairOutagamie County · 292,000 vehicles/day
- IH 94-E-W Freeway over Lrd N 32nd STFairMilwaukee County · 168,000 vehicles/day
- IH 94-E-W Freeway over Lrd Hawley RDFairMilwaukee County · 161,000 vehicles/day
- IH41/94 NB & SB over IH Ramp SW IH41/94 NB toFairMilwaukee County · 138,000 vehicles/day
- IH 41 over IH 43 NBFairMilwaukee County · 138,000 vehicles/day
Longest
- Ush 2 over Sth IH 35-MINNESOTAFairDouglas County · 8,318 ft
- I 535 over ST Louis R; RR StreetPoorDouglas County · 7,980 ft
- Sth 64 over St. Croix RiverFairSt. Croix County · 5,079 ft
- IH 43 NB Off Ramp over IH I41 NBGoodBrown County · 3,989 ft
- Ush 10 Wb-Sth 441 over Lit Lake Butte De MortsFairWinnebago County · 3,462 ft
Oldest
- Lrd Lathers RD over Turtle CreekPoorRock County · Built 1887
- Cth N (dead End) over Br Mccartney BranchPoorGrant County · Built 1890
- Cth G over S Br Little Wolf RiverGoodWaupaca County · Built 1890
- Lrd Bigalke RD over S Br Little Wolf RiverPoorWaupaca County · Built 1890
- Lrd Bloomingdale R over W Fk Kickapoo RiverFairVernon County · Built 1891
Newest
- IH 43 SB over Indian CreekGoodMilwaukee County · Built 2024
- IH 94 WB over Lrd Newville RDGoodJefferson County · Built 2024
- IH 94 WB over Lrd Rock Lake RDGoodJefferson County · Built 2024
- IH 43 Nb-Sth 32 NB over Sth 57-STH 167-MEQUON RDGoodOzaukee County · Built 2024
- IH 43 Sb-Sth 32 SB over Sth 57-STH 167-MEQUON RDFairOzaukee County · Built 2024
Who owns Wisconsin's bridges
| State | 5,368 | 37.0% |
| Town / Township | 4,497 | 31.0% |
| County | 3,130 | 21.6% |
| City | 1,353 | 9.3% |
| Federal | 134 | 0.9% |
| Railroad | 15 | 0.1% |
| Private | 1 | 0.0% |
More Wisconsin facts
Total bridge length318 miles
Total deck area78,345,304 sq ft
Culverts counted as bridges2,170 (15%)
On the National Highway System3,612
Posted with load limits810
Closed to traffic32
Listed or eligible for the National Register34
Average daily traffic per bridge5,480 vehicles
Newest structure2024