SH 21 over Elk Creek
Good Condition26 years old2,000 vehicles/day
Location
| State | Idaho |
| County | Boise |
| Location | 2.0 S. Idaho City |
| Carries | SH 21 |
| Crosses | Elk Creek |
| Coordinates | 43.81091, -115.86711 |
Condition Ratings
| Overall Condition | Good |
| Deck | 7 (Good) |
| Superstructure | 7 (Good) |
| Substructure | 7 (Good) |
| Channel/Waterway | 7 (Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Concrete |
| Design | Frame |
| Total Length | 24.0 ft (7.3 m) |
| Max Span | 24.0 ft (7.3 m) |
| Deck Width | 88.9 ft (27.1 m) |
| Deck Area | 197.8 sq m |
| Main Spans | 1 |
| Year Built | 2000 |
Traffic
| Avg Daily Traffic | 2,000 (2023) |
| Truck Traffic | 18% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | October 2024 |
| Inspection Frequency | Every 48 months |
| Owner | State Highway Agency |
| Historical Significance | Historical significance is not determined |
| Structure Number | 000000000012881 |