Old US 10 over Work Creek 041
Sweet Grass County, Montana · rated Poor in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Old US 10 over Work Creek 041 in Sweet Grass County, Montana, is rated in poor condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the substructure, rated 4 (poor condition) on the 0-9 scale.
- It was built in 1932 and reconstructed in 1992, making it 93 years old at the 2025 inventory.
- It carries about 29 vehicles a day (traffic count year 2023).
- Its listed owner is the state highway agency.
- It is one of 6 of the 94 inventoried bridges in Sweet Grass County rated poor (6.4%); 6 (6.4%) are rated poor.
- Its traffic status in the 2025 inventory is posted for load (NBI item 41).
- It was rated fair in the 2024 inventory and is now poor (substructure 5 to 4).
- Status change: newly posted for load since 2024.
- Its most recent inspection on record is dated May 2024, on a 24-month routine inspection cycle.
- A poor rating means at least one major component - deck, superstructure, or substructure - is rated 4 or lower on FHWA's 0-9 scale. It does not by itself mean the bridge is unsafe; bridges judged unsafe are closed or load-restricted by their owners.
View this bridge on a map → (45.70912, -109.6178)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 5 | 5 | Fair condition |
| Superstructure | 5 | 5 | Fair condition |
| Substructure | 5 | 4 | Poor condition |
Bridge details
| Structure | Concrete tee beam |
| Length | about 67 ft |
| Location | 4M W Reed Point |
| NBI structure number | L49125016+04001 |
| Condition class | Poor |
| Traffic status (item 41) | Posted for load |
| Last inspection (item 90) | May 2024 |
| 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 Sweet Grass County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I 90 over Spring Creek | 1980 | 12,306 | Fair |
| I 90 over Work Creek | 1972 | 10,845 | Fair |
| I 90 over Upper Deer Creek | 1980 | 6,153 | Fair |
| I 90 over Upper Deer Creek | 1980 | 6,153 | Fair |
| I 90 over Lower Deer Creek | 1980 | 6,153 | Fair |
| I 90 over Lower Deer Creek | 1980 | 6,153 | Good |
All bridges nearby: Sweet Grass County, MT bridge conditions · every bridge in Sweet Grass County · Montana bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.