Tr 421 over Mitchell Creek
Good Condition27 years old375 vehicles/day
Location
| State | Illinois |
| County | Shelby |
| Location | 1.8 Mi W Of Cowden |
| Carries | Tr 421 |
| Crosses | Mitchell Creek |
| Coordinates | 39.24929, -88.89423 |
Condition Ratings
| Overall Condition | Good |
| Deck | 7 (Good) |
| Superstructure | 7 (Good) |
| Substructure | 8 (Very Good) |
| Channel/Waterway | 8 (Very Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Box Beam - Multiple |
| Total Length | 112.9 ft (34.4 m) |
| Max Span | 37.1 ft (11.3 m) |
| Deck Width | 24.0 ft (7.3 m) |
| Deck Area | 251.1 sq m |
| Main Spans | 3 |
| Year Built | 1999 |
Traffic
| Avg Daily Traffic | 375 (2024) |
| Truck Traffic | 4% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 323 |
| Inspection Frequency | Every 48 months |
| Owner | Town/Township Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 087349400000000 |