Keir LN over Spokane Creek 143
Good Condition22 years old100 vehicles/day
Location
| State | Montana |
| County | Lewis and Clark |
| Location | 4m SW Canyon Ferry |
| Carries | Keir LN |
| Crosses | Spokane Creek 143 |
| Coordinates | 46.64654, -111.79864 |
Condition Ratings
| Overall Condition | Good |
| Deck | 8 (Very Good) |
| Superstructure | 8 (Very Good) |
| Substructure | 8 (Very Good) |
| Channel/Waterway | 7 (Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Steel |
| Design | Stringer/Multi-beam |
| Total Length | 40.4 ft (12.3 m) |
| Max Span | 39.0 ft (11.9 m) |
| Deck Width | 24.9 ft (7.6 m) |
| Deck Area | 93.5 sq m |
| Main Spans | 1 |
| Year Built | 2004 |
Traffic
| Avg Daily Traffic | 100 (2025) |
| Truck Traffic | 3% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | October 2024 |
| Inspection Frequency | Every 24 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | L25010001+06871 |