Tr 11a over S Br Marshall Slough
Fair Condition52 years old300 vehicles/day
Location
| State | Illinois |
| County | Kankakee |
| Location | 2.1 M NE Manteno |
| Carries | Tr 11a |
| Crosses | S Br Marshall Slough |
| Coordinates | 41.26540, -87.80856 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 6 (Satisfactory) |
| Substructure | 7 (Good) |
| Channel/Waterway | 6 (Satisfactory) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Box Beam - Multiple |
| Total Length | 57.1 ft (17.4 m) |
| Max Span | 56.1 ft (17.1 m) |
| Deck Width | 25.9 ft (7.9 m) |
| Deck Area | 137.5 sq m |
| Main Spans | 1 |
| Year Built | 1974 |
Traffic
| Avg Daily Traffic | 300 (2021) |
| Truck Traffic | 7% |
| 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 | 046331600000000 |