Il 40 over Rock River
Good Condition14 years old19,800 vehicles/day
Location
| State | Illinois |
| County | Whiteside |
| Location | Sterling & Rock Fall |
| Carries | Il 40 |
| Crosses | Rock River |
| Coordinates | 41.78499, -89.69302 |
Condition Ratings
| Overall Condition | Good |
| Deck | 7 (Good) |
| Superstructure | 8 (Very Good) |
| Substructure | 8 (Very Good) |
| Channel/Waterway | 8 (Very Good) |
| Scour Critical | 5 — Stable for scour |
Physical Characteristics
| Material | Steel Continuous |
| Design | Stringer/Multi-beam |
| Total Length | 1030.2 ft (314 m) |
| Max Span | 141.4 ft (43.1 m) |
| Deck Width | 78.1 ft (23.8 m) |
| Deck Area | 7473.2 sq m |
| Main Spans | 8 |
| Year Built | 2012 |
Traffic
| Avg Daily Traffic | 19,800 (2021) |
| Truck Traffic | 2% |
| Lanes On Bridge | 4 |
Inspection & Ownership
| Last Inspection | 723 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 098011500000000 |