280TH St over Panther Creek
Dallas County, Iowa · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- 280TH St over Panther Creek in Dallas 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 1968 and reconstructed in 2017, making it 57 years old at the 2025 inventory.
- It carries about 500 vehicles a day (traffic count year 2022).
- Its listed owner is the county highway agency.
- It is one of 92 of the 206 inventoried bridges in Dallas County rated fair (44.7%); 18 (8.7%) 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 November 2023, 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 → (41.62954, -94.09402)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 5 | 5 | Fair condition |
| Superstructure | 7 | 7 | Good condition |
| Substructure | 7 | 7 | Good condition |
Bridge details
| Structure | Steel stringer or multi-beam girder |
| Length | about 80 ft |
| Location | 079282703 |
| NBI structure number | 000000000131760 |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | November 2023 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 8: foundations stable, scour above the top of the footing |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Iowa department of transportation.
Busiest bridges in Dallas County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I-80 over Panther Creek | 1965 | 32,100 | Good |
| I-80 over Bear Creek | 1965 | 29,500 | Good |
| EB I-80 over over UP RR | 1966 | 27,550 | Fair |
| WB I-80 over over UP RR | 1966 | 26,850 | Fair |
| EB I-80 over Sugar Creek | 1966 | 24,500 | Fair |
| WB I-80 over Sugar Creek | 1966 | 24,050 | Fair |
All bridges nearby: Dallas County, IA bridge conditions · every bridge in Dallas County · Iowa bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.