SH 21 over Wildlife Crossing
Good Condition16 years old3,500 vehicles/day
Location
| State | Idaho |
| County | Boise |
| Location | 18.0 N. Boise |
| Carries | SH 21 |
| Crosses | Wildlife Crossing |
| Coordinates | 43.60326, -115.98782 |
Condition Ratings
| Overall Condition | Good |
| Deck | 7 (Good) |
| Superstructure | 8 (Very Good) |
| Substructure | 8 (Very Good) |
| Scour Critical | Not applicable |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Stringer/Multi-beam |
| Total Length | 75.1 ft (22.9 m) |
| Max Span | 71.9 ft (21.9 m) |
| Deck Width | 34.1 ft (10.4 m) |
| Deck Area | 238.2 sq m |
| Main Spans | 1 |
| Year Built | 2010 |
Traffic
| Avg Daily Traffic | 3,500 (2023) |
| Truck Traffic | 7% |
| 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 | 000000000012818 |