Us-31 (old) over Pentwater River
Fair Condition72 years old4,200 vehicles/day
Location
| State | Michigan |
| County | Oceana |
| Location | N Lts Of Hart |
| Carries | Us-31 (old) |
| Crosses | Pentwater River |
| Coordinates | 43.70744, -86.35594 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 6 (Satisfactory) |
| Substructure | 7 (Good) |
| Channel/Waterway | 5 (Fair) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Steel |
| Design | Girder and Floorbeam |
| Total Length | 270.0 ft (82.3 m) |
| Max Span | 102.0 ft (31.1 m) |
| Deck Width | 63.0 ft (19.2 m) |
| Deck Area | 1580.2 sq m |
| Main Spans | 3 |
| Year Built | 1954 (reconstructed 2008) |
Traffic
| Avg Daily Traffic | 4,200 (2019) |
| Truck Traffic | 3% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | November 2023 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is on the National Register of Historic Places |
| Structure Number | 000000000008318 |