N21 over Thirty Mile Canal
Good Condition65 years old985 vehicles/day
Location
| State | Nebraska |
| County | Dawson |
| Location | 6s Cozad |
| Carries | N21 |
| Crosses | Thirty Mile Canal |
| Coordinates | 40.76860, -99.99540 |
Condition Ratings
| Overall Condition | Good |
| Channel/Waterway | 7 (Good) |
| Culvert | 8 (Very Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Concrete |
| Design | Culvert |
| Total Length | 26.9 ft (8.2 m) |
| Max Span | 7.9 ft (2.4 m) |
| Deck Area | 64.8 sq m |
| Main Spans | 3 |
| Year Built | 1961 (reconstructed 1995) |
Traffic
| Avg Daily Traffic | 985 (2018) |
| Truck Traffic | 14% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | October 2023 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | S021 00738 |