Checked
Wisconsin Bridge Conditions
Highway bridges longer than 20 feet in the 2025 National Bridge Inventory
Yearly inspection ratings. A poor rating does not mean a bridge is unsafe to use.
- Highway bridges
- 14,498
- Good condition
- 46.6%
- 6,749
- Poor condition
- 6.7%
- 976
- Weight-limited or closed
- 842
Bridges by county
| County | Bridges | Good | Poor | Weight-limited | Avg. year built |
|---|---|---|---|---|---|
| Adams County | 42 | 64.3% | 2.4% (1) | 1 | 1985 |
| Ashland County | 84 | 41.7% | 4.8% (4) | 3 | 1985 |
| Barron County | 319 | 46.7% | 6.6% (21) | 28 | 1978 |
| Bayfield County | 103 | 47.6% | 5.8% (6) | 4 | 1990 |
| Brown County | 473 | 46.5% | 4.4% (21) | 6 | 1990 |
| Buffalo County | 239 | 59.8% | 8.4% (20) | 24 | 1986 |
| Burnett County | 68 | 41.2% | 7.4% (5) | 4 | 1986 |
| Calumet County | 63 | 38.1% | 17.5% (11) | 5 | 1974 |
| Chippewa County | 359 | 33.1% | 11.1% (40) | 34 | 1986 |
| Clark County | 298 | 50% | 11.1% (33) | 26 | 1984 |
| Columbia County | 182 | 25.3% | 9.3% (17) | 26 | 1978 |
| Crawford County | 211 | 54% | 5.2% (11) | 10 | 1987 |
| Dane County | 593 | 46.9% | 7.1% (42) | 24 | 1988 |
| Dodge County | 213 | 47.9% | 2.8% (6) | 13 | 1984 |
| Door County | 33 | 45.5% | 3% (1) | 0 | 1986 |
| Douglas County | 136 | 45.6% | 14.7% (20) | 10 | 1984 |
| Dunn County | 244 | 29.9% | 8.2% (20) | 12 | 1982 |
| Eau Claire County | 235 | 40% | 9.4% (22) | 16 | 1983 |
| Florence County | 20 | 45% | 5% (1) | 3 | 1974 |
| Fond du Lac County | 252 | 50.4% | 10.7% (27) | 16 | 1987 |
| Forest County | 53 | 43.4% | 11.3% (6) | 2 | 1986 |
| Grant County | 381 | 66.4% | 4.2% (16) | 23 | 1984 |
| Green County | 241 | 50.2% | 10% (24) | 22 | 1979 |
| Green Lake County | 48 | 52.1% | 4.2% (2) | 1 | 1983 |
| Iowa County | 209 | 67% | 5.3% (11) | 11 | 1989 |
| Iron County | 48 | 47.9% | 4.2% (2) | 3 | 1986 |
| Jackson County | 214 | 36% | 7.5% (16) | 12 | 1975 |
| Jefferson County | 182 | 55.5% | 4.9% (9) | 4 | 1988 |
| Juneau County | 174 | 50.6% | 2.9% (5) | 23 | 1981 |
| Kenosha County | 110 | 64.5% | 4.5% (5) | 1 | 1997 |
| Kewaunee County | 92 | 38% | 5.4% (5) | 4 | 1988 |
| La Crosse County | 249 | 41% | 4.8% (12) | 13 | 1984 |
| Lafayette County | 217 | 47% | 9.7% (21) | 14 | 1978 |
| Langlade County | 78 | 47.4% | 7.7% (6) | 7 | 1985 |
| Lincoln County | 158 | 44.9% | 5.7% (9) | 16 | 1982 |
| Manitowoc County | 277 | 44% | 4.7% (13) | 18 | 1982 |
| Marathon County | 531 | 38.2% | 7.5% (40) | 38 | 1983 |
| Marinette County | 135 | 56.3% | 8.9% (12) | 7 | 1986 |
| Marquette County | 81 | 35.8% | 6.2% (5) | 2 | 1988 |
| Menominee County | 25 | 44% | 8% (2) | 2 | 1988 |
| Milwaukee County | 897 | 31.9% | 4.8% (43) | 5 | 1982 |
| Monroe County | 374 | 42.8% | 5.3% (20) | 17 | 1981 |
| Oconto County | 150 | 54% | 2.7% (4) | 12 | 1986 |
| Oneida County | 61 | 29.5% | 19.7% (12) | 2 | 1984 |
| Outagamie County | 299 | 46.5% | 5% (15) | 24 | 1983 |
| Ozaukee County | 106 | 25.5% | 2.8% (3) | 5 | 1983 |
| Pepin County | 57 | 66.7% | 7% (4) | 1 | 1985 |
| Pierce County | 250 | 58.8% | 4% (10) | 9 | 1984 |
| Polk County | 72 | 25% | 22.2% (16) | 15 | 1983 |
| Portage County | 183 | 49.2% | 2.2% (4) | 4 | 1991 |
| Price County | 107 | 47.7% | 7.5% (8) | 5 | 1983 |
| Racine County | 133 | 54.1% | 13.5% (18) | 2 | 1992 |
| Richland County | 297 | 53.2% | 3.4% (10) | 14 | 1986 |
| Rock County | 304 | 55.3% | 4.3% (13) | 6 | 1994 |
| Rusk County | 150 | 33.3% | 9.3% (14) | 11 | 1988 |
| Sauk County | 275 | 50.2% | 9.1% (25) | 9 | 1985 |
| Sawyer County | 98 | 36.7% | 17.3% (17) | 6 | 1987 |
| Shawano County | 155 | 41.9% | 9% (14) | 14 | 1977 |
| Sheboygan County | 239 | 35.1% | 5% (12) | 13 | 1980 |
| St. Croix County | 297 | 58.2% | 3.4% (10) | 18 | 1986 |
| Taylor County | 176 | 57.4% | 11.9% (21) | 14 | 1989 |
| Trempealeau County | 259 | 44.8% | 12.7% (33) | 18 | 1987 |
| Vernon County | 334 | 43.1% | 7.5% (25) | 39 | 1984 |
| Vilas County | 29 | 44.8% | 10.3% (3) | 4 | 1988 |
| Walworth County | 215 | 33% | 3.7% (8) | 4 | 1982 |
| Washburn County | 49 | 51% | 2% (1) | 2 | 1990 |
| Washington County | 164 | 41.5% | 7.9% (13) | 11 | 1985 |
| Waukesha County | 370 | 47.6% | 5.4% (20) | 6 | 1985 |
| Waupaca County | 168 | 73.8% | 3.6% (6) | 5 | 1984 |
| Waushara County | 55 | 49.1% | 5.5% (3) | 4 | 1985 |
| Winnebago County | 265 | 61.5% | 3% (8) | 3 | 1993 |
| Wood County | 240 | 62.1% | 5.4% (13) | 20 | 1986 |
Frequently asked questions
- How many bridges in Wisconsin are in poor condition?
- In the 2025 National Bridge Inventory, 976 of 14,498 highway bridges in Wisconsin were rated poor (6.7% of rated bridges).
- Which Wisconsin counties have the most bridges in poor condition?
- Among counties with at least 30 bridges, the highest shares rated poor are Polk County (22.2%), Oneida County (19.7%), Calumet County (17.5%), Sawyer County (17.3%), Douglas County (14.7%).
Source: Federal Highway Administration, National Bridge Inventory · 2025 data