230TH St over Stream
Cedar County, Iowa · rated Poor in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- 230TH St over Stream in Cedar County, Iowa, is rated in poor condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the substructure, rated 3 (serious condition) on the 0-9 scale.
- It was built in 1950, making it 75 years old at the 2025 inventory.
- It carries about 71 vehicles a day (traffic count year 2021).
- Its listed owner is the county highway agency.
- It is one of 60 of the 300 inventoried bridges in Cedar County rated poor (20.0%); 60 (20.0%) are rated poor.
- A poor rating means at least one major component - deck, superstructure, or substructure - is rated 4 or lower on FHWA's 0-9 scale. It does not by itself mean the bridge is unsafe; bridges judged unsafe are closed or load-restricted by their owners.
View this bridge on a map → (41.75579, -90.91348)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Deck | 7 | Good condition |
| Superstructure | 5 | Fair condition |
| Substructure | 3 | Serious condition |
Bridge details
| Structure | Steel stringer or multi-beam girder |
| Length | about 32 ft |
| Location | 080011201 |
| NBI structure number | 000000000102470 |
| Condition class | Poor |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Iowa department of transportation.
Busiest bridges in Cedar 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 |
All bridges nearby: Cedar County, IA bridge conditions · every bridge in Cedar County · Iowa bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.