Tr 121 1200th Av over Rock Creek
Good Condition6 years old75 vehicles/day
Location
| State | Illinois |
| County | Effingham |
| Location | 3 Mi. NW Altamont |
| Carries | Tr 121 1200th Av |
| Crosses | Rock Creek |
| Coordinates | 39.08701, -88.78499 |
Condition Ratings
| Overall Condition | Good |
| Channel/Waterway | 9 (Excellent) |
| Culvert | 8 (Very Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Aluminum/Wrought Iron/Cast Iron |
| Design | Culvert |
| Total Length | 20.0 ft (6.1 m) |
| Max Span | 20.0 ft (6.1 m) |
| Deck Area | 33.5 sq m |
| Main Spans | 1 |
| Year Built | 2020 |
Traffic
| Avg Daily Traffic | 75 (2023) |
| Truck Traffic | 4% |
| Lanes On Bridge | 1 |
Inspection & Ownership
| Last Inspection | October 2024 |
| Inspection Frequency | Every 24 months |
| Owner | Town/Township Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 025333100000000 |