Tr 310 over Otter Creek
Good Condition105 years old400 vehicles/day
Location
| State | Illinois |
| County | LaSalle |
| Location | E 18th N 1500 |
| Carries | Tr 310 |
| Crosses | Otter Creek |
| Coordinates | 41.15042, -88.81644 |
Condition Ratings
| Overall Condition | Good |
| Deck | 7 (Good) |
| Superstructure | 7 (Good) |
| Substructure | 8 (Very Good) |
| Channel/Waterway | 7 (Good) |
| Scour Critical | 5 — Stable for scour |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Box Beam - Multiple |
| Total Length | 53.1 ft (16.2 m) |
| Max Span | 51.8 ft (15.8 m) |
| Deck Width | 24.0 ft (7.3 m) |
| Deck Area | 118.3 sq m |
| Main Spans | 1 |
| Year Built | 1921 (reconstructed 1980) |
Traffic
| Avg Daily Traffic | 400 (2020) |
| Truck Traffic | 8% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 624 |
| Inspection Frequency | Every 24 months |
| Owner | Town/Township Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 050317700000000 |