Suydam RD over Somonauk Creek
Fair Condition71 years old1,950 vehicles/day
Location
| State | Illinois |
| County | DeKalb |
| Location | 145n 1565e |
| Carries | Suydam RD |
| Crosses | Somonauk Creek |
| Coordinates | 41.65262, -88.64973 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 6 (Satisfactory) |
| Substructure | 8 (Very Good) |
| Channel/Waterway | 7 (Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Concrete Continuous |
| Design | Slab |
| Total Length | 104.0 ft (31.7 m) |
| Max Span | 38.4 ft (11.7 m) |
| Deck Width | 32.5 ft (9.9 m) |
| Deck Area | 313.8 sq m |
| Main Spans | 3 |
| Year Built | 1955 (reconstructed 2009) |
Traffic
| Avg Daily Traffic | 1,950 (2021) |
| Truck Traffic | 10% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 323 |
| Inspection Frequency | Every 24 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 019301700000000 |