Werth Road over Lwr S Br Thunder Bay Riv
Fair Condition87 years old1,850 vehicles/day
Location
| State | Michigan |
| County | Alpena |
| Location | 8 Mi SW Of Alpena |
| Carries | Werth Road |
| Crosses | Lwr S Br Thunder Bay Riv |
| Coordinates | 44.98284, -83.56943 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 5 (Fair) |
| Superstructure | 5 (Fair) |
| Substructure | 6 (Satisfactory) |
| Channel/Waterway | 8 (Very Good) |
| Scour Critical | 5 — Stable for scour |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Box Beam - Multiple |
| Total Length | 119.8 ft (36.5 m) |
| Max Span | 57.7 ft (17.6 m) |
| Deck Width | 31.5 ft (9.6 m) |
| Deck Area | 350.4 sq m |
| Main Spans | 2 |
| Year Built | 1939 (reconstructed 1990) |
Traffic
| Avg Daily Traffic | 1,850 (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 | 000000000000341 |