County Line RD over Irrigation Canal 031
Fair Condition77 years old100 vehicles/day
Location
| State | Montana |
| County | Teton |
| Location | 3m SE Fairfield |
| Carries | County Line RD |
| Crosses | Irrigation Canal 031 |
| Coordinates | 47.61134, -111.92921 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 7 (Good) |
| Superstructure | 7 (Good) |
| Substructure | 6 (Satisfactory) |
| Channel/Waterway | 7 (Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Wood or Timber |
| Design | Stringer/Multi-beam |
| Total Length | 57.1 ft (17.4 m) |
| Max Span | 17.4 ft (5.3 m) |
| Deck Width | 26.2 ft (8 m) |
| Deck Area | 139.2 sq m |
| Main Spans | 3 |
| Year Built | 1949 |
Traffic
| Avg Daily Traffic | 100 (2025) |
| Truck Traffic | 3% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | December 2023 |
| Inspection Frequency | Every 24 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | L50481000+05001 |