SH 21 over Warm Springs Creek
Fair Condition70 years old1,200 vehicles/day
Location
| State | Idaho |
| County | Boise |
| Location | 19 Ne. Lowman |
| Carries | SH 21 |
| Crosses | Warm Springs Creek |
| Coordinates | 44.14397, -115.30492 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 8 (Very Good) |
| Substructure | 7 (Good) |
| Channel/Waterway | 7 (Good) |
| Scour Critical | 5 — Stable for scour |
Physical Characteristics
| Material | Concrete Continuous |
| Design | Tee Beam |
| Total Length | 149.9 ft (45.7 m) |
| Max Span | 62.0 ft (18.9 m) |
| Deck Width | 29.9 ft (9.1 m) |
| Deck Area | 415.9 sq m |
| Main Spans | 3 |
| Year Built | 1956 |
Traffic
| Avg Daily Traffic | 1,200 (2023) |
| Truck Traffic | 9% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | October 2024 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Historical significance is not determined |
| Structure Number | 000000000012910 |