Bridge conditions in Cedar County, Iowa
300 inventoried bridges · 60 rated poor · 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
About one in 5 bridges in Cedar County is rated in poor condition: 60 of 300 on the federal inventory, one of the higher shares in Iowa.
- 60 of the 300 bridges in Cedar County, Iowa, are rated in poor condition (20.0%) in the 2025 National Bridge Inventory, as of .
- 131 bridges (43.7%) are rated good and 109 (36.3%) fair.
- The median Cedar County bridge was built in 1992.
- The busiest poor-rated bridge is FM over Cedar River (built 1966), carrying about 1,860 vehicles a day.
Good 43.7% · Fair 36.3% · Poor 20.0% of 300 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 Stream | 1960 | 39,700 | Fair |
| I-80 over Stream | 1960 | 39,700 | Fair |
| I-80 over Middle Wapsinonoc Creek | 1960 | 39,700 | Fair |
| I-80 over Drainage Ditch | 1959 | 36,000 | Fair |
| I-80 over Little Elkhorn Creek | 1959 | 36,000 | Fair |
| I-80 over Drainage Ditch | 1960 | 36,000 | Fair |
| WB I-80 over Abandon RR | 1962 | 19,500 | Fair |
| I 80 EB Ia 38 SB over Sugar Creek | 2024 | 19,000 | Good |
| I 80 WB Ia 38 NB over Sugar Creek | 2024 | 18,650 | Good |
| EB I-80 over Cedar River | 2009 | 18,600 | Good |
Source: FHWA National Bridge Inventory, 2025. Counts cover inventoried highway bridges over 20 feet; ratings are reported by the state DOT.
Every bridge in Cedar County → - all 300, 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.