S 21 over Irrigation Canal
Fair Condition38 years old706 vehicles/day
Location
| State | Montana |
| County | Pondera |
| Location | 1m S Conrad |
| Carries | S 21 |
| Crosses | Irrigation Canal |
| Coordinates | 48.14947, -111.94446 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 7 (Good) |
| Superstructure | 8 (Very Good) |
| Substructure | 6 (Satisfactory) |
| Channel/Waterway | 7 (Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Tee Beam |
| Total Length | 27.2 ft (8.3 m) |
| Max Span | 24.9 ft (7.6 m) |
| Deck Width | 42.0 ft (12.8 m) |
| Deck Area | 106.2 sq m |
| Main Spans | 1 |
| Year Built | 1988 |
Traffic
| Avg Daily Traffic | 706 (2023) |
| Truck Traffic | 5% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 225 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | P00021002+06271 |