M-25 over Howe Drain
Fair Condition45 years old28,550 vehicles/day
Location
| State | Michigan |
| County | St. Clair |
| Location | 1.9 Mi NW Of Port Huron |
| Carries | M-25 |
| Crosses | Howe Drain |
| Coordinates | 43.02783, -82.45606 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 8 (Very Good) |
| Superstructure | 5 (Fair) |
| Substructure | 5 (Fair) |
| Channel/Waterway | 6 (Satisfactory) |
| Scour Critical | 5 — Stable for scour |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Box Beam - Multiple |
| Total Length | 25.6 ft (7.8 m) |
| Max Span | 24.9 ft (7.6 m) |
| Deck Width | 90.9 ft (27.7 m) |
| Deck Area | 216.1 sq m |
| Main Spans | 1 |
| Year Built | 1981 |
Traffic
| Avg Daily Traffic | 28,550 (2018) |
| Truck Traffic | 3% |
| Lanes On Bridge | 5 |
Inspection & Ownership
| Last Inspection | 823 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000000010023 |