Tr 89a/indian Trai over Armstrong Run
Good Condition20 years old50 vehicles/day
Location
| State | Illinois |
| County | Grundy |
| Location | 1.5 Mi E Of Ill 170 |
| Carries | Tr 89a/indian Trai |
| Crosses | Armstrong Run |
| Coordinates | 41.29056, -88.57991 |
Condition Ratings
| Overall Condition | Good |
| Deck | 7 (Good) |
| Superstructure | 7 (Good) |
| Substructure | 7 (Good) |
| Channel/Waterway | 8 (Very Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Box Beam - Multiple |
| Total Length | 56.4 ft (17.2 m) |
| Max Span | 55.1 ft (16.8 m) |
| Deck Width | 29.9 ft (9.1 m) |
| Deck Area | 156.5 sq m |
| Main Spans | 1 |
| Year Built | 2006 |
Traffic
| Avg Daily Traffic | 50 (2024) |
| Truck Traffic | 24% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | October 2024 |
| Inspection Frequency | Every 48 months |
| Owner | Town/Township Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 032421500000000 |