S 87 over Madison River
Fair Condition65 years old1,490 vehicles/day
Location
| State | Montana |
| County | Madison |
| Location | 29m SE Cameron |
| Carries | S 87 |
| Crosses | Madison River |
| Coordinates | 44.82635, -111.48469 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 7 (Good) |
| Superstructure | 6 (Satisfactory) |
| Substructure | 6 (Satisfactory) |
| Channel/Waterway | 7 (Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Stringer/Multi-beam |
| Total Length | 259.5 ft (79.1 m) |
| Max Span | 51.5 ft (15.7 m) |
| Deck Width | 33.8 ft (10.3 m) |
| Deck Area | 814.7 sq m |
| Main Spans | 5 |
| Year Built | 1961 |
Traffic
| Avg Daily Traffic | 1,490 (2023) |
| Truck Traffic | 15% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 623 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | P00013008+01401 |