Fas-826 (ch-10) over Harper Creek
Fair Condition38 years old2,450 vehicles/day
Location
| State | Illinois |
| County | Jefferson |
| Location | 1.5 NW Mt Vernon |
| Carries | Fas-826 (ch-10) |
| Crosses | Harper Creek |
| Coordinates | 38.35582, -88.96868 |
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 |
| Design | Box Beam - Multiple |
| Total Length | 61.4 ft (18.7 m) |
| Max Span | 58.7 ft (17.9 m) |
| Deck Width | 27.9 ft (8.5 m) |
| Deck Area | 158.9 sq m |
| Main Spans | 1 |
| Year Built | 1988 |
Traffic
| Avg Daily Traffic | 2,450 (2021) |
| Truck Traffic | 7% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | December 2024 |
| Inspection Frequency | Every 24 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 041363000000000 |