US 421 over Topper Ditch
Good Condition40 years old4,504 vehicles/day
Location
| State | Indiana |
| County | LaPorte |
| Location | 01.84 N US 30 |
| Carries | US 421 |
| Crosses | Topper Ditch |
| Coordinates | 41.46046, -86.89202 |
Condition Ratings
| Overall Condition | Good |
| Channel/Waterway | 7 (Good) |
| Culvert | 7 (Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Steel |
| Design | Culvert |
| Total Length | 34.8 ft (10.6 m) |
| Max Span | 14.4 ft (4.4 m) |
| Deck Area | 96.5 sq m |
| Main Spans | 2 |
| Year Built | 1986 |
Traffic
| Avg Daily Traffic | 4,504 (2004) |
| Truck Traffic | 10% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 523 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 032470 |