Tr 438a over Blackston Branch
Good Condition23 years old25 vehicles/day
Location
| State | Illinois |
| County | Iroquois |
| Location | 3.25 Mi NE Of Iroq. |
| Carries | Tr 438a |
| Crosses | Blackston Branch |
| Coordinates | 40.85612, -87.55864 |
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 | 64.0 ft (19.5 m) |
| Max Span | 60.7 ft (18.5 m) |
| Deck Width | 29.9 ft (9.1 m) |
| Deck Area | 177.4 sq m |
| Main Spans | 1 |
| Year Built | 2003 |
Traffic
| Avg Daily Traffic | 25 (2022) |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 923 |
| Inspection Frequency | Every 48 months |
| Owner | Town/Township Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 038375100000000 |