Bridge conditions in Iowa County, Wisconsin
209 inventoried bridges · 11 rated poor · 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
The federal inventory lists 209 bridges in Iowa County: 140 rated good, 58 fair, and 11 poor.
- 11 of the 209 bridges in Iowa County, Wisconsin, are rated in poor condition (5.3%) in the 2025 National Bridge Inventory, as of .
- 140 bridges (67.0%) are rated good and 58 (27.8%) fair.
- The median Iowa County bridge was built in 1991.
- The busiest poor-rated bridge is Cth A over Pecatonica River (built 1939), carrying about 650 vehicles a day.
Good 67.0% · Fair 27.8% · Poor 5.3% of 209 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 |
|---|---|---|---|
| Cth A over Pecatonica River | 1939 | 650 | Poor |
| Cth Hh over White Hollow Creek | 1948 | 400 | Poor |
| Cth E over E Pecatonica River | 1940 | 350 | Poor |
| Cth T over Jones Creek | 1974 | 340 | Poor |
| Cth G over Pecatonica River | 1973 | 327 | Poor |
| Cth Kk over W Br Blue Mounds Creek | 1972 | 315 | Poor |
| Cth H over Mill Creek | 1968 | 300 | Poor |
| Lrd Roaster Rd over E Pecatonica River | 1969 | 208 | Poor |
| Lrd Jones Branch R over Pecatonica River | 1929 | 145 | Poor |
| Lrd Lakeview Rd over Snead Creek | 1945 | 52 | Poor |
| Lrd Frame Rd (dead over W Br Blue Mounds Creek | 1930 | 40 | Poor |
Busiest bridges in the county
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Ush 18-ush 151 over Br Dodge Branch | 1979 | 14,600 | Fair |
| Ush 18 Eb-ush 151 over Cth Id | S. Jones Street | 1988 | 7,850 | Fair |
| Ush 18 Wb-ush 151 over Lrd S Jones St | 1983 | 7,850 | Fair |
| Ush 18 EB / Ush 15 over Lrd Ridgevue Rd | 2018 | 7,650 | Good |
| Ush 18 WB / Ush 15 over Lrd Ridgevue Road | 2018 | 7,650 | Good |
| Ush 18 Wb-ush 151 over Cth H | 1982 | 7,600 | Fair |
| Ush 18 Eb-ush 151 over Cth H | 1988 | 7,600 | Fair |
| Ush 14 over Blue Mound Creek | 2001 | 7,500 | Good |
| Ush 18 Wb-ush 151 over Cth Z | 1980 | 7,300 | Fair |
| Ush 18 Eb-ush 151 over Cth Z | 1980 | 7,300 | 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.