Tr 239 over Porterfield Creek
Good Condition13 years old50 vehicles/day
Location
| State | Illinois |
| County | Union |
| Location | 2 Mi NE Dongola |
| Carries | Tr 239 |
| Crosses | Porterfield Creek |
| Coordinates | 37.39215, -89.12919 |
Condition Ratings
| Overall Condition | Good |
| Deck | 8 (Very Good) |
| Superstructure | 8 (Very Good) |
| Substructure | 8 (Very Good) |
| Channel/Waterway | 8 (Very Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Box Beam - Multiple |
| Total Length | 46.3 ft (14.1 m) |
| Max Span | 44.0 ft (13.4 m) |
| Deck Width | 24.0 ft (7.3 m) |
| Deck Area | 102.9 sq m |
| Main Spans | 1 |
| Year Built | 2013 |
Traffic
| Avg Daily Traffic | 50 (2020) |
| Truck Traffic | 12% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 424 |
| Inspection Frequency | Every 48 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 091324100000000 |