US 89 over Dupuyer Creek Overflow
Good Condition58 years old543 vehicles/day
Location
| State | Montana |
| County | Pondera |
| Location | 1m N Dupuyer |
| Carries | US 89 |
| Crosses | Dupuyer Creek Overflow |
| Coordinates | 48.19786, -112.50517 |
Condition Ratings
| Overall Condition | Good |
| Deck | 7 (Good) |
| Superstructure | 8 (Very Good) |
| Substructure | 7 (Good) |
| Channel/Waterway | 7 (Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Stringer/Multi-beam |
| Total Length | 122.0 ft (37.2 m) |
| Max Span | 60.7 ft (18.5 m) |
| Deck Width | 38.1 ft (11.6 m) |
| Deck Area | 431.5 sq m |
| Main Spans | 2 |
| Year Built | 1968 |
Traffic
| Avg Daily Traffic | 543 (2023) |
| Truck Traffic | 6% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 824 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | P00003075+09021 |