21 Mile Road over Middle Br Clinton River
Fair Condition47 years old17,600 vehicles/day
Location
| State | Michigan |
| County | Macomb |
| Location | 0.2 Mi E Of Romeo Plank |
| Carries | 21 Mile Road |
| Crosses | Middle Br Clinton River |
| Coordinates | 42.64276, -82.93348 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 7 (Good) |
| Superstructure | 6 (Satisfactory) |
| Substructure | 7 (Good) |
| Channel/Waterway | 6 (Satisfactory) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Box Beam - Multiple |
| Total Length | 105.0 ft (32 m) |
| Max Span | 50.9 ft (15.5 m) |
| Deck Width | 36.7 ft (11.2 m) |
| Deck Area | 358.4 sq m |
| Main Spans | 2 |
| Year Built | 1979 |
Traffic
| Avg Daily Traffic | 17,600 (2019) |
| Truck Traffic | 5% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 524 |
| Inspection Frequency | Every 24 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 000000000006345 |