N. Bayou Black Dr. over Donner Canal
Good Condition9 years old1,256 vehicles/day
Location
| State | Louisiana |
| County | Terrebonne |
| Location | 1.2 Mi NW Of La.20 |
| Carries | N. Bayou Black Dr. |
| Crosses | Donner Canal |
| Coordinates | 29.67707, -90.97850 |
Condition Ratings
| Overall Condition | Good |
| Deck | 8 (Very Good) |
| Superstructure | 8 (Very Good) |
| Substructure | 8 (Very Good) |
| Channel/Waterway | 7 (Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Steel |
| Design | Truss - Thru |
| Total Length | 69.9 ft (21.3 m) |
| Max Span | 69.9 ft (21.3 m) |
| Deck Width | 28.9 ft (8.8 m) |
| Deck Area | 187.4 sq m |
| Main Spans | 1 |
| Year Built | 2017 |
Traffic
| Avg Daily Traffic | 1,256 (2020) |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 423 |
| Inspection Frequency | Every 24 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 025500000020554 |