Tr-20a over Spring Creek
Fair Condition60 years old25 vehicles/day
Location
| State | Illinois |
| County | LaSalle |
| Location | E 1st N 3410 |
| Carries | Tr-20a |
| Crosses | Spring Creek |
| Coordinates | 41.42664, -89.14587 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 5 (Fair) |
| Superstructure | 5 (Fair) |
| Substructure | 6 (Satisfactory) |
| Channel/Waterway | 6 (Satisfactory) |
| 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 | 49.9 ft (15.2 m) |
| Deck Width | 26.2 ft (8 m) |
| Deck Area | 129.6 sq m |
| Main Spans | 1 |
| Year Built | 1966 |
Traffic
| Avg Daily Traffic | 25 (2016) |
| 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 | 050307900000000 |