Tr 523a over Otter Creek
Good Condition41 years old200 vehicles/day
Location
| State | Illinois |
| County | LaSalle |
| Location | N 15th RD E 2370 |
| Carries | Tr 523a |
| Crosses | Otter Creek |
| Coordinates | 41.15065, -88.70612 |
Condition Ratings
| Overall Condition | Good |
| Deck | 8 (Very Good) |
| Superstructure | 8 (Very Good) |
| Substructure | 7 (Good) |
| Channel/Waterway | 6 (Satisfactory) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Box Beam - Multiple |
| Total Length | 62.0 ft (18.9 m) |
| Max Span | 29.9 ft (9.1 m) |
| Deck Width | 24.0 ft (7.3 m) |
| Deck Area | 138.0 sq m |
| Main Spans | 2 |
| Year Built | 1985 |
Traffic
| Avg Daily Traffic | 200 (2020) |
| Truck Traffic | 2% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 622 |
| Inspection Frequency | Every 48 months |
| Owner | Town/Township Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 050350100000000 |