FM 521 over Drainage Ditch
Fair Condition101 years old19,672 vehicles/day
Location
| State | Texas |
| County | Harris |
| Location | 3.0 Mi S Of IH 610 |
| Carries | FM 521 |
| Crosses | Drainage Ditch |
| Coordinates | 29.63406, -95.41145 |
Condition Ratings
| Overall Condition | Fair |
| Channel/Waterway | 7 (Good) |
| Culvert | 6 (Satisfactory) |
| Scour Critical | 6 — Scour calculated, stable |
Physical Characteristics
| Material | Concrete |
| Design | Culvert |
| Total Length | 36.1 ft (11 m) |
| Max Span | 9.8 ft (3 m) |
| Deck Width | 95.1 ft (29 m) |
| Deck Area | 319 sq m |
| Main Spans | 3 |
| Year Built | 1925 (reconstructed 1979) |
Traffic
| Avg Daily Traffic | 19,672 (2020) |
| Truck Traffic | 5% |
| Lanes On Bridge | 5 |
Inspection & Ownership
| Last Inspection | 824 |
| Inspection Frequency | Every 24 months |
| Owner | State Highway Agency |
| Historical Significance | Bridge is possibly eligible (requires evaluation) |
| Structure Number | 121020011101002 |