Johnson Road over Black River
Fair Condition26 years old250 vehicles/day
Location
| State | Michigan |
| County | Gogebic |
| Location | Sec 3-4 Erwin Twp |
| Carries | Johnson Road |
| Crosses | Black River |
| Coordinates | 46.41034, -90.05257 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 7 (Good) |
| Superstructure | 6 (Satisfactory) |
| Substructure | 8 (Very Good) |
| Channel/Waterway | 7 (Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Box Beam - Multiple |
| Total Length | 82.0 ft (25 m) |
| Max Span | 77.8 ft (23.7 m) |
| Deck Width | 31.2 ft (9.5 m) |
| Deck Area | 237.5 sq m |
| Main Spans | 1 |
| Year Built | 2000 |
Traffic
| Avg Daily Traffic | 250 (1998) |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 924 |
| Inspection Frequency | Every 24 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000000002985 |