Old Boulder Road over Boulder River 029
Fair Condition6 years old100 vehicles/day
Location
| State | Montana |
| County | Sweet Grass |
| Location | East Big Timber |
| Carries | Old Boulder Road |
| Crosses | Boulder River 029 |
| Coordinates | 45.83408, -109.93839 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 7 (Good) |
| Superstructure | 7 (Good) |
| Substructure | 6 (Satisfactory) |
| Channel/Waterway | 8 (Very Good) |
| Scour Critical | 5 — Stable for scour |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Tee Beam |
| Total Length | 138.1 ft (42.1 m) |
| Max Span | 134.8 ft (41.1 m) |
| Deck Width | 26.2 ft (8 m) |
| Deck Area | 336.8 sq m |
| Main Spans | 1 |
| Year Built | 2020 |
Traffic
| Avg Daily Traffic | 100 (2025) |
| Truck Traffic | 3% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | November 2024 |
| Inspection Frequency | Every 24 months |
| Owner | County Highway Agency |
| Historical Significance | Historical significance is not determined |
| Structure Number | 000000202004523 |