Ionia Road over Thornapple River
Good Condition69 years old2,700 vehicles/day
Location
| State | Michigan |
| County | Eaton |
| Location | 0.5 Mi S Of Vermontville |
| Carries | Ionia Road |
| Crosses | Thornapple River |
| Coordinates | 42.61145, -85.02481 |
Condition Ratings
| Overall Condition | Good |
| Deck | 7 (Good) |
| Superstructure | 7 (Good) |
| Substructure | 7 (Good) |
| Channel/Waterway | 6 (Satisfactory) |
| Scour Critical | 4 — Foundations need monitoring |
Physical Characteristics
| Material | Steel Continuous |
| Design | Stringer/Multi-beam |
| Total Length | 111.9 ft (34.1 m) |
| Max Span | 44.0 ft (13.4 m) |
| Deck Width | 28.9 ft (8.8 m) |
| Deck Area | 300.1 sq m |
| Main Spans | 3 |
| Year Built | 1957 |
Traffic
| Avg Daily Traffic | 2,700 (2018) |
| Truck Traffic | 2% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 523 |
| Inspection Frequency | Every 24 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000000002349 |