Porter Street over Tobacco River
Fair Condition109 years old1,470 vehicles/day
Location
| State | Michigan |
| County | Gladwin |
| Location | 0.1 Miles East Of M-18 |
| Carries | Porter Street |
| Crosses | Tobacco River |
| Coordinates | 43.88365, -84.48359 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 5 (Fair) |
| Superstructure | 5 (Fair) |
| Substructure | 6 (Satisfactory) |
| Channel/Waterway | 7 (Good) |
| Scour Critical | 5 — Stable for scour |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Box Beam - Multiple |
| Total Length | 198.5 ft (60.5 m) |
| Max Span | 50.9 ft (15.5 m) |
| Deck Width | 30.5 ft (9.3 m) |
| Deck Area | 562.6 sq m |
| Main Spans | 4 |
| Year Built | 1917 (reconstructed 1959) |
Traffic
| Avg Daily Traffic | 1,470 (2017) |
| Truck Traffic | 5% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 624 |
| Inspection Frequency | Every 24 months |
| Owner | City/Municipal Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000000002942 |