Tr 173 over Back Creek
Good Condition39 years old25 vehicles/day
Location
| State | Illinois |
| County | Washington |
| Location | 3 Mi West Of Ashley |
| Carries | Tr 173 |
| Crosses | Back Creek |
| Coordinates | 38.33139, -89.24733 |
Condition Ratings
| Overall Condition | Good |
| Deck | 7 (Good) |
| Superstructure | 7 (Good) |
| Substructure | 8 (Very Good) |
| Channel/Waterway | 6 (Satisfactory) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Box Beam - Multiple |
| Total Length | 38.1 ft (11.6 m) |
| Max Span | 35.1 ft (10.7 m) |
| Deck Width | 24.0 ft (7.3 m) |
| Deck Area | 84.7 sq m |
| Main Spans | 1 |
| Year Built | 1987 |
Traffic
| Avg Daily Traffic | 25 (2024) |
| Truck Traffic | 12% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 423 |
| Inspection Frequency | Every 48 months |
| Owner | Town/Township Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 095319400000000 |