Us-31 over Grand River M-104 Conn
Fair Condition66 years old66,750 vehicles/day
Location
| State | Michigan |
| County | Ottawa |
| Location | Grand Haven-ferrysburg |
| Carries | Us-31 |
| Crosses | Grand River M-104 Conn |
| Coordinates | 43.07597, -86.21731 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 5 (Fair) |
| Substructure | 6 (Satisfactory) |
| Channel/Waterway | 7 (Good) |
| Scour Critical | 7 — Countermeasures installed |
Physical Characteristics
| Material | Steel |
| Design | Movable - Bascule |
| Total Length | 692.6 ft (211.1 m) |
| Max Span | 226.4 ft (69 m) |
| Deck Width | 95.5 ft (29.1 m) |
| Deck Area | 6143.0 sq m |
| Main Spans | 1 |
| Year Built | 1960 |
Traffic
| Avg Daily Traffic | 66,750 (2021) |
| Truck Traffic | 3% |
| Lanes On Bridge | 6 |
| Lanes Under Bridge | 1 |
Inspection & Ownership
| Last Inspection | 524 |
| Inspection Frequency | Every 15 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000000008699 |