I-55 (nb) over Sangamon River
Poor Condition63 years old14,600 vehicles/day
Location
| State | Illinois |
| County | Sangamon |
| Location | 2.8m N Il54/sang. Av |
| Carries | I-55 (nb) |
| Crosses | Sangamon River |
| Coordinates | 39.87014, -89.59603 |
Condition Ratings
| Overall Condition | Poor |
| Deck | 5 (Fair) |
| Superstructure | 4 (Poor) |
| Substructure | 7 (Good) |
| Channel/Waterway | 6 (Satisfactory) |
| Scour Critical | 5 — Stable for scour |
Physical Characteristics
| Material | Steel Continuous |
| Design | Stringer/Multi-beam |
| Total Length | 1125.0 ft (342.9 m) |
| Max Span | 180.1 ft (54.9 m) |
| Deck Width | 47.2 ft (14.4 m) |
| Deck Area | 4937.8 sq m |
| Main Spans | 3 |
| Year Built | 1963 (reconstructed 1993) |
Traffic
| Avg Daily Traffic | 14,600 (2023) |
| Truck Traffic | 31% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | November 2024 |
| Inspection Frequency | Every 12 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 084001800000000 |