4 Mi RD over I-75 NB
Fair Condition65 years old180 vehicles/day
Location
| State | Michigan |
| County | Crawford |
| Location | 4.0 Mi S Of Grayling |
| Carries | 4 Mi RD |
| Crosses | I-75 NB |
| Coordinates | 44.59846, -84.70898 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 5 (Fair) |
| Substructure | 6 (Satisfactory) |
| Scour Critical | Not applicable |
Physical Characteristics
| Material | Steel |
| Design | Stringer/Multi-beam |
| Total Length | 211.0 ft (64.3 m) |
| Max Span | 70.9 ft (21.6 m) |
| Deck Width | 30.8 ft (9.4 m) |
| Deck Area | 604.4 sq m |
| Main Spans | 4 |
| Year Built | 1961 |
Traffic
| Avg Daily Traffic | 180 (1974) |
| Lanes On Bridge | 2 |
| Lanes Under Bridge | 4 |
Inspection & Ownership
| Last Inspection | 923 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000000002034 |