I-69 EB over Colby Lake RD
Fair Condition37 years old20,138 vehicles/day
Location
| State | Michigan |
| County | Shiawassee |
| Location | 1.5 Mi W Of Shaftsburg |
| Carries | I-69 EB |
| Crosses | Colby Lake RD |
| Coordinates | 42.80624, -84.32282 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 7 (Good) |
| Substructure | 5 (Fair) |
| Scour Critical | Not applicable |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Stringer/Multi-beam |
| Total Length | 100.7 ft (30.7 m) |
| Max Span | 98.1 ft (29.9 m) |
| Deck Width | 47.2 ft (14.4 m) |
| Deck Area | 442.1 sq m |
| Main Spans | 1 |
| Year Built | 1989 |
Traffic
| Avg Daily Traffic | 20,138 (2020) |
| Truck Traffic | 15% |
| Lanes On Bridge | 2 |
| Lanes Under Bridge | 2 |
Inspection & Ownership
| Last Inspection | 623 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000000009764 |