Ch 30 over Rock Creek
Good Condition52 years old175 vehicles/day
Location
| State | Illinois |
| County | Kankakee |
| Location | 4 Mi W Manteno |
| Carries | Ch 30 |
| Crosses | Rock Creek |
| Coordinates | 41.24158, -87.92024 |
Condition Ratings
| Overall Condition | Good |
| Deck | 7 (Good) |
| Superstructure | 7 (Good) |
| Substructure | 7 (Good) |
| Channel/Waterway | 6 (Satisfactory) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Box Beam - Multiple |
| Total Length | 121.7 ft (37.1 m) |
| Max Span | 40.0 ft (12.2 m) |
| Deck Width | 26.9 ft (8.2 m) |
| Deck Area | 304.2 sq m |
| Main Spans | 3 |
| Year Built | 1974 (reconstructed 2002) |
Traffic
| Avg Daily Traffic | 175 (2021) |
| Truck Traffic | 4% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 422 |
| Inspection Frequency | Every 48 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 046332000000000 |