Bridge conditions in Bayfield County, Wisconsin
103 inventoried bridges · 6 rated poor · 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
6 of the 103 bridges the federal inventory lists in Bayfield County are rated poor; the rest split 49 good and 48 fair.
- 6 of the 103 bridges in Bayfield County, Wisconsin, are rated in poor condition (5.8%) in the 2025 National Bridge Inventory, as of .
- 49 bridges (47.6%) are rated good and 48 (46.6%) fair.
- The median Bayfield County bridge was built in 1991.
- The busiest poor-rated bridge is Sth 13 over Sand River (built 1956), carrying about 880 vehicles a day.
Good 47.6% · Fair 46.6% · Poor 5.8% of 103 bridges
Bridges rated poor
Every bridge in the county with a poor rating, busiest first. Poor means a major component is rated 4 or lower on FHWA's 0-9 scale; it is a repair flag, not a closure notice.
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Sth 13 over Sand River | 1956 | 880 | Poor |
| Sth 13 over Fish Creek | 2002 | 670 | Poor |
| Cth D over Namekagon Lake | 1971 | 575 | Poor |
| Cth H over Eagle Lake | 1955 | 431 | Poor |
| Lrd Bibon Rd over White River | 1984 | 76 | Poor |
| Lrd Evergreen Rd over Kolin Creek | 1950 | 65 | Poor |
Busiest bridges in the county
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Ush 2-sth 13 over Fish Creek | 1991 | 11,600 | Fair |
| Ush 2-sth 13 over Fish Creek | 1991 | 11,600 | Fair |
| Sth 13 over Whittlesey Creek | 1954 | 7,500 | Fair |
| Sth 13 over Little Whittlesey Crk | 1981 | 7,100 | Fair |
| Sth 13 over Terwilliger Creek | 2019 | 7,100 | Good |
| Sth 13 over Boyd Creek | 2020 | 7,100 | Good |
| Sth 13 over Thompson Creek | 1980 | 6,400 | Fair |
| Ush 2 over N Fish Creek | 1977 | 6,300 | Fair |
| Sth 13 over Bono Creek | 1981 | 6,200 | Fair |
| Ush 2 over Tri-county Corridor Trai | 1975 | 5,800 | Fair |
Source: FHWA National Bridge Inventory, 2025. Counts cover inventoried highway bridges over 20 feet; ratings are reported by the state DOT.
All of Wisconsin: Wisconsin bridge conditions by county · every download on the data page.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.