Johnson Road over Thornapple Drain
Good Condition30 years old49 vehicles/day
Location
| State | Michigan |
| County | Eaton |
| Location | 2 Mi NW Of Potterville |
| Carries | Johnson Road |
| Crosses | Thornapple Drain |
| Coordinates | 42.66241, -84.75857 |
Condition Ratings
| Overall Condition | Good |
| Channel/Waterway | 8 (Very Good) |
| Culvert | 8 (Very Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Aluminum/Wrought Iron/Cast Iron |
| Design | Culvert |
| Total Length | 32.5 ft (9.9 m) |
| Max Span | 32.5 ft (9.9 m) |
| Deck Area | 89.1 sq m |
| Main Spans | 1 |
| Year Built | 1996 |
Traffic
| Avg Daily Traffic | 49 (2012) |
| 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 | 000000000002375 |