County Road Extn over Black River
Good Condition5 years old10 vehicles/day
Location
| State | Michigan |
| County | Marquette |
| Location | 0.5 Mi W Of CR 581 |
| Carries | County Road Extn |
| Crosses | Black River |
| Coordinates | 46.40080, -87.84300 |
Condition Ratings
| Overall Condition | Good |
| Deck | 8 (Very Good) |
| Superstructure | 8 (Very Good) |
| Substructure | 7 (Good) |
| Channel/Waterway | 6 (Satisfactory) |
| Scour Critical | 7 — Countermeasures installed |
Physical Characteristics
| Material | Steel |
| Design | Stringer/Multi-beam |
| Total Length | 55.1 ft (16.8 m) |
| Max Span | 48.9 ft (14.9 m) |
| Deck Width | 14.1 ft (4.3 m) |
| Deck Area | 72.2 sq m |
| Main Spans | 1 |
| Year Built | 2021 |
Traffic
| Avg Daily Traffic | 10 (2013) |
| Lanes On Bridge | 1 |
Inspection & Ownership
| Last Inspection | October 2023 |
| Inspection Frequency | Every 24 months |
| Owner | Other State Agencies |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000000013722 |