Altamont ST over Us-41|m-28
Fair Condition63 years old1,500 vehicles/day
Location
| State | Michigan |
| County | Marquette |
| Location | In Marquette |
| Carries | Altamont ST |
| Crosses | Us-41|m-28 |
| Coordinates | 46.53865, -87.40364 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 6 (Satisfactory) |
| Substructure | 6 (Satisfactory) |
| Scour Critical | Not applicable |
Physical Characteristics
| Material | Steel |
| Design | Stringer/Multi-beam |
| Total Length | 172.2 ft (52.5 m) |
| Max Span | 93.2 ft (28.4 m) |
| Deck Width | 40.4 ft (12.3 m) |
| Deck Area | 645.8 sq m |
| Main Spans | 3 |
| Year Built | 1963 |
Traffic
| Avg Daily Traffic | 1,500 (1974) |
| Lanes On Bridge | 2 |
| Lanes Under Bridge | 4 |
Inspection & Ownership
| Last Inspection | 724 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000000006507 |