FM 646 over Highland Bayou
Good Condition20 years old9,853 vehicles/day
Location
| State | Texas |
| County | Galveston |
| Location | 0.55 Mi N Of SH 6 |
| Carries | FM 646 |
| Crosses | Highland Bayou |
| Coordinates | 29.38070, -95.08947 |
Condition Ratings
| Overall Condition | Good |
| Channel/Waterway | 8 (Very Good) |
| Culvert | 7 (Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Concrete |
| Design | Culvert |
| Total Length | 33.1 ft (10.1 m) |
| Max Span | 8.9 ft (2.7 m) |
| Deck Width | 130.2 ft (39.7 m) |
| Deck Area | 401.0 sq m |
| Main Spans | 3 |
| Year Built | 2006 |
Traffic
| Avg Daily Traffic | 9,853 (2020) |
| Truck Traffic | 6% |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | October 2024 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is not eligible for the National Register |
| Structure Number | 120850097801007 |