21st St. over Butte Arm Canal
Fair Condition71 years old2,025 vehicles/day
Location
| State | Idaho |
| County | Bonneville |
| Location | In Idaho Falls;21st St. |
| Carries | 21st St. |
| Crosses | Butte Arm Canal |
| Coordinates | 43.47906, -112.03706 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 7 (Good) |
| Substructure | 7 (Good) |
| Channel/Waterway | 7 (Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Concrete |
| Design | Stringer/Multi-beam |
| Total Length | 35.1 ft (10.7 m) |
| Max Span | 34.1 ft (10.4 m) |
| Deck Width | 70.2 ft (21.4 m) |
| Deck Area | 229.0 sq m |
| Main Spans | 1 |
| Year Built | 1955 |
Traffic
| Avg Daily Traffic | 2,025 (2023) |
| Truck Traffic | 10% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 323 |
| Inspection Frequency | Every 24 months |
| Owner | City/Municipal Highway Agency |
| Historical Significance | Historical significance is not determined |
| Structure Number | 000000000031320 |