Tr 320 over Martinton Ditch #3
Poor Condition71 years old25 vehicles/day
Location
| State | Illinois |
| County | Iroquois |
| Location | 2.5mi E Martinton |
| Carries | Tr 320 |
| Crosses | Martinton Ditch #3 |
| Coordinates | 40.91291, -87.67347 |
Condition Ratings
| Overall Condition | Poor |
| Deck | 6 (Satisfactory) |
| Superstructure | 4 (Poor) |
| Substructure | 2 (Critical) |
| Channel/Waterway | 4 (Poor) |
| Scour Critical | 5 — Stable for scour |
Physical Characteristics
| Material | Steel |
| Design | Truss - Thru |
| Total Length | 57.1 ft (17.4 m) |
| Max Span | 55.4 ft (16.9 m) |
| Deck Width | 20.0 ft (6.1 m) |
| Deck Area | 106.1 sq m |
| Main Spans | 1 |
| Year Built | 1955 |
Traffic
| Avg Daily Traffic | 25 (2022) |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 423 |
| Inspection Frequency | Every 24 months |
| Owner | Town/Township Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 038454500000000 |