Us-31 NB over Us-31 Br Colby RD
Fair Condition63 years old9,754 vehicles/day
Location
| State | Michigan |
| County | Muskegon |
| Location | S Jct Us-31br |
| Carries | Us-31 NB |
| Crosses | Us-31 Br Colby RD |
| Coordinates | 43.40950, -86.31438 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 5 (Fair) |
| Substructure | 5 (Fair) |
| Scour Critical | Not applicable |
Physical Characteristics
| Material | Steel |
| Design | Stringer/Multi-beam |
| Total Length | 128.0 ft (39 m) |
| Max Span | 56.8 ft (17.3 m) |
| Deck Width | 47.9 ft (14.6 m) |
| Deck Area | 569.4 sq m |
| Main Spans | 3 |
| Year Built | 1963 |
Traffic
| Avg Daily Traffic | 9,754 (2007) |
| Truck Traffic | 7% |
| Lanes On Bridge | 2 |
| Lanes Under Bridge | 3 |
Inspection & Ownership
| Last Inspection | 724 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000000007604 |