I-55 over Three Mile Branch
Fair Condition53 years old26,500 vehicles/day
Location
| State | Illinois |
| County | Montgomery |
| Location | 2m S Il 108 |
| Carries | I-55 |
| Crosses | Three Mile Branch |
| Coordinates | 39.24922, -89.64119 |
Condition Ratings
| Overall Condition | Fair |
| Channel/Waterway | 7 (Good) |
| Culvert | 6 (Satisfactory) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Concrete |
| Design | Culvert |
| Total Length | 34.1 ft (10.4 m) |
| Max Span | 9.8 ft (3 m) |
| Deck Area | 227.8 sq m |
| Main Spans | 3 |
| Year Built | 1973 |
Traffic
| Avg Daily Traffic | 26,500 (2023) |
| Truck Traffic | 32% |
| Lanes On Bridge | 6 |
Inspection & Ownership
| Last Inspection | 324 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 068201600000000 |