Main Boulder RD over Four Mile Creek 039
Fair Condition88 years old157 vehicles/day
Location
| State | Montana |
| County | Park |
| Location | 30m S Springdale |
| Carries | Main Boulder RD |
| Crosses | Four Mile Creek 039 |
| Coordinates | 45.34127, -110.23208 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 5 (Fair) |
| Superstructure | 7 (Good) |
| Substructure | 6 (Satisfactory) |
| Channel/Waterway | 7 (Good) |
| Scour Critical | 5 — Stable for scour |
Physical Characteristics
| Material | Wood or Timber |
| Design | Stringer/Multi-beam |
| Total Length | 30.8 ft (9.4 m) |
| Max Span | 28.9 ft (8.8 m) |
| Deck Width | 25.3 ft (7.7 m) |
| Deck Area | 72.4 sq m |
| Main Spans | 1 |
| Year Built | 1938 |
Traffic
| Avg Daily Traffic | 157 (2023) |
| Truck Traffic | 17% |
| Lanes On Bridge | 1 |
Inspection & Ownership
| Last Inspection | 924 |
| Inspection Frequency | Every 24 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | L34210000+03001 |