Il 138 over Big Branch
Good Condition35 years old1,100 vehicles/day
Location
| State | Illinois |
| County | Macoupin |
| Location | .3m W Il 4(mt Clare) |
| Carries | Il 138 |
| Crosses | Big Branch |
| Coordinates | 39.09943, -89.82129 |
Condition Ratings
| Overall Condition | Good |
| Deck | 8 (Very Good) |
| Superstructure | 8 (Very Good) |
| Substructure | 8 (Very Good) |
| Channel/Waterway | 8 (Very Good) |
| Scour Critical | 5 — Stable for scour |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Stringer/Multi-beam |
| Total Length | 69.9 ft (21.3 m) |
| Max Span | 67.6 ft (20.6 m) |
| Deck Width | 40.7 ft (12.4 m) |
| Deck Area | 264.1 sq m |
| Main Spans | 1 |
| Year Built | 1991 |
Traffic
| Avg Daily Traffic | 1,100 (2023) |
| Truck Traffic | 7% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 222 |
| Inspection Frequency | Every 48 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 059005100000000 |