S 59 over Thompson Creek
Garfield County, Montana · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- S 59 over Thompson Creek in Garfield County, Montana, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the culvert, rated 6 (satisfactory condition) on the 0-9 scale.
- It was built in 1997, making it 28 years old at the 2025 inventory.
- It carries about 295 vehicles a day (traffic count year 2023).
- Its listed owner is the state highway agency.
- It is one of 14 of the 26 inventoried bridges in Garfield County rated fair (53.8%); 2 (7.7%) 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 → (46.94044, -106.44403)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Culvert | 6 | Satisfactory condition |
Bridge details
| Structure | Steel culvert |
| Length | about 37 ft |
| Location | 36M SE Jordan |
| NBI structure number | P00018047+08321 |
| Condition class | Fair |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Montana department of transportation.
Busiest bridges in Garfield County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| S 200-jordan Ave over Big Dry Creek | 1993 | 1,078 | Good |
| S 200 over Dugout Coulee | 1973 | 551 | Good |
| S 200 over Little Dry Creek | 2022 | 537 | Good |
| S 200 over Drainage | 1938 | 537 | Fair |
| S 200 over Vail Creek-stockpass | 2004 | 520 | Good |
| S 200 over Oliver Coulee | 2004 | 520 | Good |
All bridges nearby: Garfield County, MT bridge conditions · every bridge in Garfield County · Montana bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.