29 Mile Road over Salt River
Good Condition39 years old150 vehicles/day
Location
| State | Michigan |
| County | Macomb |
| Location | 0.3 Mi W Of Gratiot Us-25 |
| Carries | 29 Mile Road |
| Crosses | Salt River |
| Coordinates | 42.76461, -82.76568 |
Condition Ratings
| Overall Condition | Good |
| Deck | 7 (Good) |
| Superstructure | 8 (Very Good) |
| Substructure | 7 (Good) |
| Channel/Waterway | 6 (Satisfactory) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Stringer/Multi-beam |
| Total Length | 32.2 ft (9.8 m) |
| Max Span | 29.9 ft (9.1 m) |
| Deck Width | 43.3 ft (13.2 m) |
| Deck Area | 129.4 sq m |
| Main Spans | 1 |
| Year Built | 1987 |
Traffic
| Avg Daily Traffic | 150 (2019) |
| Truck Traffic | 2% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | November 2023 |
| Inspection Frequency | Every 24 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000000006226 |