Structure 29126 · Idaho County, ID
Carries Zumwalt Road over S.fk. Cottonwood Creek, 4.8 N. 3.0 W. Grangeville.
A culvert 20 ft across. 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, so those are drawn as typical for a culvert.
| State | Idaho |
| County | Idaho |
| Location | 4.8 N. 3.0 W. Grangeville |
| Carries | Zumwalt Road |
| Crosses | S.fk. Cottonwood Creek |
| Coordinates | 45.99569, -116.18092 |
| Material | Aluminum/Wrought Iron/Cast Iron |
| Design | Culvert |
| Total Length | 20.0 ft (6.1 m) |
| Max Span | 20.0 ft (6.1 m) |
| Deck Width | 49.2 ft (15 m) |
| Deck Area | 91.5 sq m |
| Main Spans | 1 |
| Year Built | 2017 |
| Avg Daily Traffic | 50 (2023) |
| Truck Traffic | 10% |
| Lanes On Bridge | 2 |
| Last Inspection | September 2023 |
| Inspection Frequency | Every 24 months |
| Owner | Other Local Agencies |
| Historical Significance | Historical significance is not determined |
| Scour Critical | 8 — Stable, low risk |
| Structure Number | 000000000029126 |
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.