US 30 over W Br Big Rock Creek
Good Condition42 years old5,050 vehicles/day
Location
| State | Illinois |
| County | Kane |
| Location | .6 E Of Dekalb Co L |
| Carries | US 30 |
| Crosses | W Br Big Rock Creek |
| Coordinates | 41.76739, -88.59097 |
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 Continuous |
| Design | Stringer/Multi-beam |
| Total Length | 162.7 ft (49.6 m) |
| Max Span | 50.5 ft (15.4 m) |
| Deck Width | 43.3 ft (13.2 m) |
| Deck Area | 654.7 sq m |
| Main Spans | 3 |
| Year Built | 1984 |
Traffic
| Avg Daily Traffic | 5,050 (2023) |
| Truck Traffic | 13% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 523 |
| Inspection Frequency | Every 48 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 045200500000000 |