Structure 31730 · Custer County, ID
Carries Squaw Creek Road over Squaw Creek, 1.5 N. 3.4 W. Clayton.
24 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 tee-beam bridge.
| State | Idaho |
| County | Custer |
| Location | 1.5 N. 3.4 W. Clayton |
| Carries | Squaw Creek Road |
| Crosses | Squaw Creek |
| Coordinates | 44.28111, -114.46858 |
| Material | Prestressed Concrete |
| Design | Tee Beam |
| Total Length | 24.0 ft (7.3 m) |
| Max Span | 23.0 ft (7 m) |
| Deck Width | 28.2 ft (8.6 m) |
| Deck Area | 62.8 sq m |
| Main Spans | 1 |
| Year Built | 1960 (reconstructed 1984) |
| Avg Daily Traffic | 330 (2023) |
| Truck Traffic | 10% |
| Lanes On Bridge | 2 |
| Last Inspection | July 2024 |
| Inspection Frequency | Every 12 months |
| Owner | County Highway Agency |
| Historical Significance | Historical significance is not determined |
| Scour Critical | Unknown |
| Structure Number | 000000000031730 |
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.