US 34 (fap 591) over Somonauk Creek
Good Condition35 years old4,700 vehicles/day
Location
| State | Illinois |
| County | DeKalb |
| Location | 1.1 Mi. W. Sandwich |
| Carries | US 34 (fap 591) |
| Crosses | Somonauk Creek |
| Coordinates | 41.63958, -88.65274 |
Condition Ratings
| Overall Condition | Good |
| Deck | 7 (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 | Stringer/Multi-beam |
| Total Length | 126.6 ft (38.6 m) |
| Max Span | 51.8 ft (15.8 m) |
| Deck Width | 43.3 ft (13.2 m) |
| Deck Area | 509.5 sq m |
| Main Spans | 3 |
| Year Built | 1991 |
Traffic
| Avg Daily Traffic | 4,700 (2023) |
| Truck Traffic | 6% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 122 |
| Inspection Frequency | Every 48 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 019003900000000 |