Bridge conditions in Polk County, Wisconsin
72 inventoried bridges · 16 rated poor · 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
About one in 4 bridges in Polk County is rated in poor condition: 16 of 72 on the federal inventory, one of the higher shares in Wisconsin.
- 16 of the 72 bridges in Polk County, Wisconsin, are rated in poor condition (22.2%) in the 2025 National Bridge Inventory, as of .
- 18 bridges (25.0%) are rated good and 38 (52.8%) fair.
- The median Polk County bridge was built in 1985.
- The busiest poor-rated bridge is Sth 243 over St Croix River 06 (built 1953), carrying about 5,686 vehicles a day.
Good 25.0% · Fair 52.8% · Poor 22.2% of 72 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 243 over St Croix River 06 | 1953 | 5,686 | Poor |
| Cth H over Apple River | 1952 | 1,600 | Poor |
| Cth F over Wapogasset Branch | 1920 | 720 | Poor |
| Cth I over Clam River | 1948 | 490 | Poor |
| Cth Cc over Black Brook Flowage | 1986 | 450 | Poor |
| Cth W over Mckenzie Creek | 1956 | 288 | Poor |
| Lrd 75TH St over Beaver Brook | 1966 | 205 | Poor |
| Lrd 350TH Ave over Wood River | 1970 | 173 | Poor |
| Lrd 30TH St over Willow River | 1960 | 100 | Poor |
| Lrd 60TH Ave over Bull Creek | 1974 | 86 | Poor |
| Cth W over Clam River | 1985 | 70 | Poor |
| Lrd 170TH St over Trade River | 1985 | 43 | Poor |
| Lrd 5TH Street over Apple River | 1977 | 43 | Poor |
| Lrd 50TH Ave over Bull Brook | 1963 | 43 | Poor |
| Lrd 357TH Ave over Indian Creek | 1964 | 43 | Poor |
| Lrd Tendrop Rd 153 over Apple River | 1961 | 10 | Poor |
Busiest bridges in the county
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Ush 8 over St Croix River 07 | 1955 | 14,900 | Fair |
| Ush 8 over Lrd Interstate Park Rd | 1956 | 14,000 | Fair |
| Ush 8 EB over Sth 35 SB / S Vincent St | 1995 | 9,000 | Fair |
| Sth 35 over Osceola CR | 2006 | 7,700 | Fair |
| Ush 8 WB over Sth 35 SB / S Vincent St | 1995 | 7,450 | Fair |
| Ush 8-sth 46 over Apple River | 1973 | 7,400 | Fair |
| Ush 8 over Balsam Branch Creek | 1990 | 6,500 | Fair |
| Sth 46 over Apple River | 2003 | 6,000 | Fair |
| Sth 243 over St Croix River 06 | 1953 | 5,686 | Poor |
| Ush 8 over N Br Beaver Brook | 2001 | 5,300 | 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.