Structure P816 · Lake County, MT
Carries IRR BIA RTE 1012 over Dry Creek Canal, 9 Km S.e. Of St. Ignatius.
Set by its lowest-rated component: Deck and Superstructure at 4 of 9.
How ratings work22 ft end to end. Lengths are drawn to scale; at this length a semi-truck would be a speck. Each part is colored by its latest inspection rating. The inventory records lengths but not heights or the layout of the shorter spans, so those are drawn as typical for a multi-beam bridge.
| State | Montana |
| County | Lake |
| Location | 9 Km S.e. Of St. Ignatius |
| Carries | IRR BIA RTE 1012 |
| Crosses | Dry Creek Canal |
| Coordinates | 47.27520, -114.00650 |
| Material | Wood or Timber |
| Design | Stringer/Multi-beam |
| Total Length | 22.0 ft (6.7 m) |
| Max Span | 19.7 ft (6 m) |
| Deck Width | 19.0 ft (5.8 m) |
| Deck Area | 38.9 sq m |
| Main Spans | 1 |
| Year Built | 1975 (reconstructed 1996) |
| Avg Daily Traffic | 50 (2023) |
| Truck Traffic | 10% |
| Lanes On Bridge | 1 |
| Last Inspection | June 2023 |
| Inspection Frequency | Every 24 months |
| Owner | Bureau of Indian Affairs |
| Historical Significance | Bridge is not eligible for the National Register |
| Scour Critical | 8 — Stable, low risk |
| Structure Number | 00000000000P816 |
Inspectors rate each major part of a bridge (the deck you drive on, the superstructure of beams that holds it up, and the substructure of piers and abutments beneath) on a 0–9 scale. A bridge's overall condition is its lowest of those ratings, so one deteriorated component makes the whole bridge "poor."
A poor rating is not a closure. It means the bridge is flagged for priority repair or replacement; bridges judged unsafe are closed or posted with weight limits. The waterway (channel) rating is reported, but it does not count toward the overall classification.