I-75 SB over Saginaw R M-13 Gtwrr
Fair Condition42 years old23,450 vehicles/day
Location
| State | Michigan |
| County | Saginaw |
| Location | At Zilwaukee |
| Carries | I-75 SB |
| Crosses | Saginaw R M-13 Gtwrr |
| Coordinates | 43.47854, -83.90644 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 6 (Satisfactory) |
| Substructure | 7 (Good) |
| Channel/Waterway | 6 (Satisfactory) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Prestressed Concrete Continuous |
| Design | Segmental Box Girder |
| Total Length | 8085.0 ft (2464.3 m) |
| Max Span | 392.1 ft (119.5 m) |
| Deck Width | 74.5 ft (22.7 m) |
| Deck Area | 55939.6 sq m |
| Main Spans | 26 |
| Year Built | 1984 |
Traffic
| Avg Daily Traffic | 23,450 (2007) |
| Truck Traffic | 7% |
| Lanes On Bridge | 4 |
| Lanes Under Bridge | 3 |
Inspection & Ownership
| Last Inspection | 824 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000000009169 |