St. Charles Bypass over Grand Coteau Bayou
Fair Condition56 years old1,193 vehicles/day
Location
| State | Louisiana |
| County | Lafourche |
| Location | 0148 Log Mi From Int |
| Carries | St. Charles Bypass |
| Crosses | Grand Coteau Bayou |
| Coordinates | 29.73327, -90.73470 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 6 (Satisfactory) |
| Substructure | 5 (Fair) |
| Channel/Waterway | 6 (Satisfactory) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Concrete |
| Design | Slab |
| Total Length | 76.1 ft (23.2 m) |
| Max Span | 19.0 ft (5.8 m) |
| Deck Width | 31.2 ft (9.5 m) |
| Deck Area | 220.4 sq m |
| Main Spans | 4 |
| Year Built | 1970 |
Traffic
| Avg Daily Traffic | 1,193 (2020) |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 623 |
| Inspection Frequency | Every 12 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 022929440904411 |