S 489 over Sunday Creek
Fair Condition65 years old607 vehicles/day
Location
| State | Montana |
| County | Custer |
| Location | 3m N Miles City |
| Carries | S 489 |
| Crosses | Sunday Creek |
| Coordinates | 46.47297, -105.84356 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 7 (Good) |
| Substructure | 7 (Good) |
| Channel/Waterway | 6 (Satisfactory) |
| Scour Critical | 5 — Stable for scour |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Stringer/Multi-beam |
| Total Length | 197.8 ft (60.3 m) |
| Max Span | 66.9 ft (20.4 m) |
| Deck Width | 26.6 ft (8.1 m) |
| Deck Area | 488.4 sq m |
| Main Spans | 3 |
| Year Built | 1961 |
Traffic
| Avg Daily Traffic | 607 (2023) |
| Truck Traffic | 1% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | November 2024 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | S00489004+02001 |