21 Mile Road over Salt Slang Gloede Drain
Poor Condition58 years old22,400 vehicles/day
Location
| State | Michigan |
| County | Macomb |
| Location | 418 Ft West Of Garfield |
| Carries | 21 Mile Road |
| Crosses | Salt Slang Gloede Drain |
| Coordinates | 42.64214, -82.95793 |
Condition Ratings
| Overall Condition | Poor |
| Deck | 5 (Fair) |
| Superstructure | 6 (Satisfactory) |
| Substructure | 4 (Poor) |
| Channel/Waterway | 3 (Serious) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Steel |
| Design | Stringer/Multi-beam |
| Total Length | 38.7 ft (11.8 m) |
| Max Span | 36.7 ft (11.2 m) |
| Deck Width | 34.1 ft (10.4 m) |
| Deck Area | 122.7 sq m |
| Main Spans | 1 |
| Year Built | 1968 |
Traffic
| Avg Daily Traffic | 22,400 (2023) |
| Truck Traffic | 5% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 724 |
| Inspection Frequency | Every 12 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000000006206 |