317th Street / Ch over Sander Drain Ditch
Good Condition39 years old275 vehicles/day
Location
| State | Illinois |
| County | Rock Island |
| Location | 2 Mi N Of Hillsdale |
| Carries | 317th Street / Ch |
| Crosses | Sander Drain Ditch |
| Coordinates | 41.63703, -90.18580 |
Condition Ratings
| Overall Condition | Good |
| Deck | 8 (Very Good) |
| Superstructure | 8 (Very 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 | 63.0 ft (19.2 m) |
| Max Span | 60.0 ft (18.3 m) |
| Deck Width | 36.1 ft (11 m) |
| Deck Area | 211.2 sq m |
| Main Spans | 1 |
| Year Built | 1987 |
Traffic
| Avg Daily Traffic | 275 (2020) |
| Truck Traffic | 25% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | November 2022 |
| Inspection Frequency | Every 48 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 081310300000000 |