US 89 over RR
Park County, Montana · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- US 89 over RR in Park County, Montana, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the superstructure, rated 5 (fair condition) on the 0-9 scale.
- It was built in 1955, making it 70 years old at the 2025 inventory.
- It carries about 2,174 vehicles a day (traffic count year 2023).
- Its listed owner is the state highway agency.
- It is one of 86 of the 126 inventoried bridges in Park County rated fair (68.3%); 13 (10.3%) 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 → (45.7076, -110.45592)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Deck | 7 | Good condition |
| Superstructure | 5 | Fair condition |
| Substructure | 6 | Satisfactory condition |
Bridge details
| Structure | Concrete tee beam |
| Length | about 128 ft |
| Location | 5M NE Livingston |
| NBI structure number | P00059000+00611 |
| Condition class | Fair |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Montana department of transportation.
Busiest bridges in Park County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I 90 over Int West Livingston | 1962 | 9,461 | Fair |
| I 90 over Int West Livingston | 1962 | 9,461 | Fair |
| I 90 over Int S Livingston-us Hwy | 1962 | 9,461 | Fair |
| I 90 over Quinn Creek Road | 2022 | 8,272 | Good |
| I 90 over Quinn Creek Road | 2022 | 8,272 | Good |
| I 90 over Int Hopper | 1978 | 8,236 | Fair |
All bridges nearby: Park County, MT bridge conditions · every bridge in Park County · Montana bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.