Tr 166 over Rock Creek
Good Condition36 years old50 vehicles/day
Location
| State | Illinois |
| County | Hancock |
| Location | 1.5 S Adrain |
| Carries | Tr 166 |
| Crosses | Rock Creek |
| Coordinates | 40.49585, -91.15828 |
Condition Ratings
| Overall Condition | Good |
| Deck | 7 (Good) |
| Superstructure | 7 (Good) |
| Substructure | 8 (Very Good) |
| Channel/Waterway | 6 (Satisfactory) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Box Beam - Multiple |
| Total Length | 71.2 ft (21.7 m) |
| Max Span | 66.9 ft (20.4 m) |
| Deck Width | 27.6 ft (8.4 m) |
| Deck Area | 182.3 sq m |
| Main Spans | 1 |
| Year Built | 1990 |
Traffic
| Avg Daily Traffic | 50 (2023) |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 322 |
| Inspection Frequency | Every 48 months |
| Owner | Town/Township Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 034512300000000 |