M-66 over ST Joseph River
Fair Condition61 years old3,375 vehicles/day
Location
| State | Michigan |
| County | St. Joseph |
| Location | 0.3 Mi S Of M-60 |
| Carries | M-66 |
| Crosses | ST Joseph River |
| Coordinates | 42.00716, -85.41123 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 5 (Fair) |
| Substructure | 7 (Good) |
| Channel/Waterway | 5 (Fair) |
| Scour Critical | 5 — Stable for scour |
Physical Characteristics
| Material | Steel |
| Design | Stringer/Multi-beam |
| Total Length | 350.1 ft (106.7 m) |
| Max Span | 71.9 ft (21.9 m) |
| Deck Width | 36.4 ft (11.1 m) |
| Deck Area | 1184.4 sq m |
| Main Spans | 5 |
| Year Built | 1965 |
Traffic
| Avg Daily Traffic | 3,375 (2018) |
| Truck Traffic | 10% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 723 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000000010278 |