Lower Sweet Grass over Sweet Grass Creek 039
Good Condition61 years old100 vehicles/day
Location
| State | Montana |
| County | Sweet Grass |
| Location | 10m E Big Timber |
| Carries | Lower Sweet Grass |
| Crosses | Sweet Grass Creek 039 |
| Coordinates | 45.84950, -109.75121 |
Condition Ratings
| Overall Condition | Good |
| Deck | 7 (Good) |
| Superstructure | 7 (Good) |
| Substructure | 7 (Good) |
| Channel/Waterway | 7 (Good) |
| Scour Critical | 5 — Stable for scour |
Physical Characteristics
| Material | Steel |
| Design | Stringer/Multi-beam |
| Total Length | 51.8 ft (15.8 m) |
| Max Span | 48.9 ft (14.9 m) |
| Deck Width | 24.9 ft (7.6 m) |
| Deck Area | 120.1 sq m |
| Main Spans | 1 |
| Year Built | 1965 |
Traffic
| Avg Daily Traffic | 100 (2025) |
| Truck Traffic | 3% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 324 |
| Inspection Frequency | Every 24 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | L49001007+00001 |