Coster Road over Manistee River
Fair Condition49 years old290 vehicles/day
Location
| State | Michigan |
| County | Kalkaska |
| Location | 11 Mi S Ofso Boardman |
| Carries | Coster Road |
| Crosses | Manistee River |
| Coordinates | 44.52761, -85.27619 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 7 (Good) |
| Substructure | 6 (Satisfactory) |
| Channel/Waterway | 6 (Satisfactory) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Box Beam - Multiple |
| Total Length | 137.8 ft (42 m) |
| Max Span | 45.9 ft (14 m) |
| Deck Width | 30.2 ft (9.2 m) |
| Deck Area | 386.4 sq m |
| Main Spans | 3 |
| Year Built | 1977 |
Traffic
| Avg Daily Traffic | 290 (2006) |
| Truck Traffic | 10% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 824 |
| Inspection Frequency | Every 24 months |
| Owner | County Highway Agency |
| Historical Significance | Historical significance is not determined |
| Structure Number | 000000000004699 |