Tr 491 over Drainage Ditch
Fair Condition59 years old150 vehicles/day
Location
| State | Illinois |
| County | LaSalle |
| Location | N 18th E 560 |
| Carries | Tr 491 |
| Crosses | Drainage Ditch |
| Coordinates | 41.19234, -89.05551 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 7 (Good) |
| Superstructure | 7 (Good) |
| Substructure | 5 (Fair) |
| Channel/Waterway | 7 (Good) |
| Scour Critical | 5 — Stable for scour |
Physical Characteristics
| Material | Concrete |
| Design | Channel Beam |
| Total Length | 40.0 ft (12.2 m) |
| Max Span | 39.0 ft (11.9 m) |
| Deck Width | 26.2 ft (8 m) |
| Deck Area | 97.6 sq m |
| Main Spans | 1 |
| Year Built | 1967 |
Traffic
| Avg Daily Traffic | 150 (2016) |
| Truck Traffic | 40% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 424 |
| Inspection Frequency | Every 24 months |
| Owner | Town/Township Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 050322900000000 |