Tr 120 Old Mazon R over Johnny Run Creek
Poor Condition44 years old50 vehicles/day
Location
| State | Illinois |
| County | Grundy |
| Location | .5 Mi S Reed RD |
| Carries | Tr 120 Old Mazon R |
| Crosses | Johnny Run Creek |
| Coordinates | 41.24969, -88.39999 |
Condition Ratings
| Overall Condition | Poor |
| Deck | 7 (Good) |
| Superstructure | 4 (Poor) |
| Substructure | 4 (Poor) |
| Channel/Waterway | 5 (Fair) |
| Scour Critical | 5 — Stable for scour |
Physical Characteristics
| Material | Concrete |
| Design | Channel Beam |
| Total Length | 98.1 ft (29.9 m) |
| Max Span | 32.2 ft (9.8 m) |
| Deck Width | 26.2 ft (8 m) |
| Deck Area | 239.2 sq m |
| Main Spans | 3 |
| Year Built | 1982 |
Traffic
| Avg Daily Traffic | 50 (2024) |
| Lanes On Bridge | 2 |
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 | 032498600000000 |