I-90 E&w over Abandoned Railroad
Silver Bow County, Montana · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- I-90 E&w over Abandoned Railroad in Silver Bow County, Montana, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the culvert, rated 8 (very good condition) on the 0-9 scale.
- It was built in 2019, making it 6 years old at the 2025 inventory.
- It carries about 15,011 vehicles a day (traffic count year 2023).
- Its listed owner is the state highway agency.
- It is one of 11 of the 70 inventoried bridges in Silver Bow County rated good (15.7%); 2 (2.9%) are rated poor.
- 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 → (46.06458, -112.77299)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Culvert | 8 | Very good condition |
Bridge details
| Structure | Concrete culvert |
| Length | about 21 ft |
| Location | 2.5M S Opportunity |
| NBI structure number | 000000201908001 |
| Condition class | Good |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Montana department of transportation.
Busiest bridges in Silver Bow County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I 15 over Bell Creek | 1963 | 19,755 | Fair |
| S Montana St over Silver Bow Creek | 1970 | 14,718 | Fair |
| I 15 over Int Rocker | 1968 | 10,824 | Fair |
| I 15 over Int Rocker | 1968 | 10,824 | Fair |
| I 90 over Whitetail Creek | 1965 | 10,349 | Fair |
| I 15 over Int S Montana Street | 1961 | 9,878 | Fair |
All bridges nearby: Silver Bow County, MT bridge conditions · every bridge in Silver Bow County · Montana bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.