Grosse Ile Parkway over Trenton Channel
Poor Condition94 years old22,180 vehicles/day
Location
| State | Michigan |
| County | Wayne |
| Location | Grosse Ile |
| Carries | Grosse Ile Parkway |
| Crosses | Trenton Channel |
| Coordinates | 42.12730, -83.17303 |
Condition Ratings
| Overall Condition | Poor |
| Deck | 7 (Good) |
| Superstructure | 4 (Poor) |
| Substructure | 5 (Fair) |
| Channel/Waterway | 7 (Good) |
| Scour Critical | 4 — Foundations need monitoring |
Physical Characteristics
| Material | Steel Continuous |
| Design | Movable - Swing |
| Total Length | 1345.8 ft (410.2 m) |
| Max Span | 169.9 ft (51.8 m) |
| Deck Width | 31.8 ft (9.7 m) |
| Deck Area | 3978.9 sq m |
| Main Spans | 2 |
| Year Built | 1932 (reconstructed 2007) |
Traffic
| Avg Daily Traffic | 22,180 (2007) |
| Truck Traffic | 2% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 624 |
| Inspection Frequency | Every 12 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is on the National Register of Historic Places |
| Structure Number | 000000000012006 |