Bridge conditions in Scott County, Iowa
291 inventoried bridges · 29 rated poor · 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
Scott County has 29 bridges rated poor out of 291 inventoried, a 10.0% share that puts it well above the national rate of about 7%.
- 29 of the 291 bridges in Scott County, Iowa, are rated in poor condition (10.0%) in the 2025 National Bridge Inventory, as of .
- 104 bridges (35.7%) are rated good and 158 (54.3%) fair.
- The median Scott County bridge was built in 1981.
- The busiest poor-rated bridge is US 67 over Miss Rvr RR & Ia 461 (built 1940), carrying about 26,500 vehicles a day.
Good 35.7% · Fair 54.3% · Poor 10.0% of 291 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 |
|---|---|---|---|
| I-80 over Mississippi River & RR | 1967 | 38,100 | Fair |
| I 74 WB over Mississippi River | 2020 | 37,650 | Good |
| WB US 6 over Goose Creek | 2011 | 35,400 | Good |
| I-80 over Drainage Ditch | 1963 | 34,600 | Fair |
| I-80 over Stream | 1963 | 34,600 | Fair |
| I-80 over Drainage Ditch | 1963 | 31,600 | Fair |
| I-80 over Crow Creek | 1963 | 31,400 | Fair |
| US 61 over Crow Creek | 1981 | 29,300 | Good |
| I-74 (WB) over Duck Creek and Bike Path | 1971 | 28,450 | Fair |
| I-74 (EB) over Duck Creek and Bike Path | 1971 | 28,450 | 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 Scott County → - all 291, 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.