US 30 & 218 over Stream
Benton County, Iowa · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- US 30 & 218 over Stream in Benton County, Iowa, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the culvert, rated 6 (satisfactory condition) on the 0-9 scale.
- It was built in 1991, making it 34 years old at the 2025 inventory.
- It carries about 15,400 vehicles a day (traffic count year 2022).
- Its listed owner is the state highway agency.
- It is one of 158 of the 373 inventoried bridges in Benton County rated fair (42.4%); 81 (21.7%) are rated poor.
- A fair rating means the lowest-rated major component scores 5 or 6 on FHWA's 0-9 scale: some deterioration or minor section loss, but the structure is sound. It is the middle class, not a warning.
View this bridge on a map → (41.96383, -91.84997)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Culvert | 6 | Satisfactory condition |
Bridge details
| Structure | Continuous concrete culvert |
| Length | about 22 ft |
| Location | 0.3 mi. E of Jct. SR W28 |
| NBI structure number | 000000000014291 |
| Condition class | Fair |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Iowa department of transportation.
Busiest bridges in Benton County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I 380 over Drainage Ditch | 1982 | 21,300 | Good |
| I-380 over Prairie Creek | 1983 | 17,900 | Good |
| I 380 NB over Ia 150 | 1982 | 8,550 | Good |
| I 380 SB over Ia 150 | 1982 | 8,550 | Good |
| US 151 over Knapp Creek | 1995 | 7,800 | Good |
| US 218 over Hinkle Creek | 1959 | 4,910 | Good |
All bridges nearby: Benton County, IA bridge conditions · every bridge in Benton County · Iowa bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.