Williamsville Road over Portage River
Fair Condition67 years old672 vehicles/day
Location
| State | Michigan |
| County | Livingston |
| Location | Sec 33 Unadilla Twp |
| Carries | Williamsville Road |
| Crosses | Portage River |
| Coordinates | 42.43645, -84.09388 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 5 (Fair) |
| 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 | 44.9 ft (13.7 m) |
| Max Span | 41.0 ft (12.5 m) |
| Deck Width | 33.1 ft (10.1 m) |
| Deck Area | 138.4 sq m |
| Main Spans | 1 |
| Year Built | 1959 |
Traffic
| Avg Daily Traffic | 672 (2013) |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 624 |
| Inspection Frequency | Every 24 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000000005805 |