Structure L59856 · Lemhi County, ID
Carries 3043: Warm Spring over Big Timber Creek, 5 Mi W Of Id28.
Set by its lowest-rated component: Deck and Substructure at 7 of 9.
How ratings work24 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 slab bridge.
| State | Idaho |
| County | Lemhi |
| Location | 5 Mi W Of Id28 |
| Carries | 3043: Warm Spring |
| Crosses | Big Timber Creek |
| Coordinates | 44.61528, -113.39778 |
| Material | Concrete |
| Design | Slab |
| Total Length | 24.0 ft (7.3 m) |
| Max Span | 21.0 ft (6.4 m) |
| Deck Width | 17.1 ft (5.2 m) |
| Deck Area | 38.0 sq m |
| Main Spans | 1 |
| Year Built | 1979 |
| Avg Daily Traffic | 25 (2011) |
| Truck Traffic | 10% |
| Lanes On Bridge | 1 |
| Last Inspection | July 2023 |
| Inspection Frequency | Every 24 months |
| Owner | Bureau of Land Management |
| Historical Significance | Historical significance is not determined |
| Scour Critical | 5 — Stable for scour |
| Structure Number | 000000000L59856 |
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.