I-280 (nb-wb) over US 61
Scott County, Iowa · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- I-280 (nb-wb) over US 61 in Scott County, Iowa, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 5 (fair condition) on the 0-9 scale.
- It was built in 1970, making it 55 years old at the 2025 inventory.
- It carries about 7,900 vehicles a day (traffic count year 2022).
- Its listed owner is the state highway agency.
- It is one of 158 of the 291 inventoried bridges in Scott County rated fair (54.3%); 29 (10.0%) are rated poor.
- Its traffic status in the 2025 inventory is open, no restriction (NBI item 41).
- Its condition class and component ratings are unchanged from the 2024 inventory.
- Its most recent inspection on record is dated April 2024, on a 24-month routine inspection cycle.
- 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 → (41.50899, -90.67258)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 5 | 5 | Fair condition |
| Superstructure | 6 | 6 | Satisfactory condition |
| Substructure | 7 | 7 | Good condition |
Bridge details
| Structure | Prestressed concrete stringer or multi-beam girder |
| Length | about 163 ft |
| Location | At Jct. US 61 |
| NBI structure number | 000000000600730 |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | April 2024 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | N: not over a waterway |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Iowa department of transportation.
Busiest bridges in Scott 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 |
All bridges nearby: Scott County, IA bridge conditions · every bridge in Scott County · Iowa bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.