Tr 121 over Four Mile Creek
Good Condition43 years old125 vehicles/day
Location
| State | Illinois |
| County | Massac |
| Location | 1 Mile E Of Il 145 |
| Carries | Tr 121 |
| Crosses | Four Mile Creek |
| Coordinates | 37.17560, -88.65688 |
Condition Ratings
| Overall Condition | Good |
| Deck | 7 (Good) |
| Superstructure | 7 (Good) |
| Substructure | 8 (Very Good) |
| Channel/Waterway | 7 (Good) |
| Scour Critical | 5 — Stable for scour |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Box Beam - Multiple |
| Total Length | 68.9 ft (21 m) |
| Max Span | 65.9 ft (20.1 m) |
| Deck Width | 24.6 ft (7.5 m) |
| Deck Area | 157.5 sq m |
| Main Spans | 1 |
| Year Built | 1983 |
Traffic
| Avg Daily Traffic | 125 (2020) |
| Truck Traffic | 6% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | December 2021 |
| Inspection Frequency | Every 48 months |
| Owner | Town/Township Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 064308400000000 |