100th Street over Thornapple River
Good Condition56 years old2,730 vehicles/day
Location
| State | Michigan |
| County | Kent |
| Location | 0.40 Mi E Of Alaska AVE |
| Carries | 100th Street |
| Crosses | Thornapple River |
| Coordinates | 42.78312, -85.46878 |
Condition Ratings
| Overall Condition | Good |
| Deck | 7 (Good) |
| Superstructure | 7 (Good) |
| Substructure | 7 (Good) |
| Channel/Waterway | 6 (Satisfactory) |
| Scour Critical | 3 — Scour critical |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Box Beam - Multiple |
| Total Length | 350.1 ft (106.7 m) |
| Max Span | 69.9 ft (21.3 m) |
| Deck Width | 37.7 ft (11.5 m) |
| Deck Area | 1227.0 sq m |
| Main Spans | 5 |
| Year Built | 1970 |
Traffic
| Avg Daily Traffic | 2,730 (2005) |
| 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 | 000000000005007 |