I 94 over O`fallon Creek
Prairie County, Montana · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- I 94 over O`fallon Creek in Prairie County, Montana, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 7 (good condition) on the 0-9 scale.
- It was built in 1969, making it 56 years old at the 2025 inventory.
- It carries about 1,939 vehicles a day (traffic count year 2023).
- Its listed owner is the state highway agency.
- It is one of 4 of the 46 inventoried bridges in Prairie County rated good (8.7%); 5 (10.9%) 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 May 2023, on a 24-month routine inspection cycle.
- A good rating means every major component - deck, superstructure, substructure, or culvert - is rated 7 or higher on FHWA's 0-9 scale: no more than minor problems.
View this bridge on a map → (46.82485, -105.15471)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 7 | 7 | Good condition |
| Superstructure | 7 | 7 | Good condition |
| Substructure | 7 | 7 | Good condition |
Bridge details
| Structure | Prestressed concrete stringer or multi-beam girder |
| Length | about 275 ft |
| Location | 1M SW Fallon |
| NBI structure number | I00094184+01151 |
| Condition class | Good |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | May 2023 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 5: foundations stable, scour within the limits of the footing or piles |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Montana department of transportation.
Busiest bridges in Prairie County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I 94 over Ash Creek | 1969 | 3,878 | Fair |
| I 94 over Int Powder River | 1971 | 3,045 | Fair |
| I 94 over RR | 1977 | 2,219 | Fair |
| I 94 over Yellowstone River | 1978 | 2,219 | Fair |
| I 94 over Yellowstone River | 1978 | 2,219 | Fair |
| I 94 over Sep Montana Road | 1971 | 2,137 | Fair |
All bridges nearby: Prairie County, MT bridge conditions · every bridge in Prairie County · Montana bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.