Metzke Road over N Br Thunder Bay River
Fair Condition42 years old150 vehicles/day
Location
| State | Michigan |
| County | Alpena |
| Location | 2.3 Mi S & 1 Mi W Bolton |
| Carries | Metzke Road |
| Crosses | N Br Thunder Bay River |
| Coordinates | 45.14720, -83.60867 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 6 (Satisfactory) |
| Substructure | 7 (Good) |
| Channel/Waterway | 6 (Satisfactory) |
| Scour Critical | 5 — Stable for scour |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Box Beam - Multiple |
| Total Length | 49.9 ft (15.2 m) |
| Max Span | 45.9 ft (14 m) |
| Deck Width | 34.1 ft (10.4 m) |
| Deck Area | 158.1 sq m |
| Main Spans | 1 |
| Year Built | 1984 |
Traffic
| Avg Daily Traffic | 150 (2010) |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 824 |
| Inspection Frequency | Every 24 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000000000352 |