Bridge conditions in Wright County, Iowa
175 inventoried bridges · 48 rated poor · 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
Of the 175 Wright County bridges in the federal inventory, 48 carry a poor rating. That 27.4% share is roughly 4x the national average.
- 48 of the 175 bridges in Wright County, Iowa, are rated in poor condition (27.4%) in the 2025 National Bridge Inventory, as of .
- 61 bridges (34.9%) are rated good and 66 (37.7%) fair.
- The median Wright County bridge was built in 1981.
- The busiest poor-rated bridge is C70 330TH St over Boone River (built 1951), carrying about 977 vehicles a day.
Good 34.9% · Fair 37.7% · Poor 27.4% of 175 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.
Busiest bridges in the county
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| NB I-35 over Drainage Ditch #29 | 1974 | 8,250 | Good |
| SB I-35 over Drainage Ditch #29 | 1974 | 8,250 | Fair |
| I 35 NB over Iowa River | 1974 | 8,250 | Good |
| SB I-35 over Iowa River | 1974 | 8,250 | Fair |
| Ia 3 over White Fox Creek | 1986 | 4,020 | Good |
| Ia 3 over Eagle Creek | 1932 | 3,450 | Fair |
| Ia 3 over Little Eagle Creek | 2016 | 3,450 | Good |
| US 69 over Iowa River | 1933 | 3,210 | Fair |
| Ia 17 over Boone River | 1933 | 3,180 | Fair |
| Ia 17 over Drainage Ditch | 1933 | 3,100 | Fair |
Source: FHWA National Bridge Inventory, 2025. Counts cover inventoried highway bridges over 20 feet; ratings are reported by the state DOT.
Every bridge in Wright County → - all 175, busiest first, each with its own condition record.
All of Iowa: Iowa 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.