Timberline RD over Big Spring Creek 134
Good Condition14 years old100 vehicles/day
Location
| State | Montana |
| County | Fergus |
| Location | 4m SE Lewistown |
| Carries | Timberline RD |
| Crosses | Big Spring Creek 134 |
| Coordinates | 47.03811, -109.40195 |
Condition Ratings
| Overall Condition | Good |
| Deck | 7 (Good) |
| Superstructure | 7 (Good) |
| Substructure | 7 (Good) |
| Channel/Waterway | 8 (Very Good) |
| Scour Critical | 5 — Stable for scour |
Physical Characteristics
| Material | Steel |
| Design | Stringer/Multi-beam |
| Total Length | 57.1 ft (17.4 m) |
| Max Span | 53.8 ft (16.4 m) |
| Deck Width | 26.2 ft (8 m) |
| Deck Area | 139.2 sq m |
| Main Spans | 1 |
| Year Built | 2012 |
Traffic
| Avg Daily Traffic | 100 (2025) |
| Truck Traffic | 3% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 824 |
| Inspection Frequency | Every 24 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | L14371000+01001 |