FM 521 over Sims Bayou
Good Condition18 years old19,994 vehicles/day
Location
| State | Texas |
| County | Harris |
| Location | 4.5 Mi S Of IH 610 |
| Carries | FM 521 |
| Crosses | Sims Bayou |
| Coordinates | 29.61919, -95.41739 |
Condition Ratings
| Overall Condition | Good |
| Deck | 7 (Good) |
| Superstructure | 8 (Very Good) |
| Substructure | 7 (Good) |
| Channel/Waterway | 7 (Good) |
| Scour Critical | 8 — Stable, low risk |
Physical Characteristics
| Material | Prestressed Concrete |
| Design | Stringer/Multi-beam |
| Total Length | 259.8 ft (79.2 m) |
| Max Span | 106.0 ft (32.3 m) |
| Deck Width | 84.3 ft (25.7 m) |
| Deck Area | 2035.4 sq m |
| Main Spans | 1 |
| Year Built | 2008 |
Traffic
| Avg Daily Traffic | 19,994 (2024) |
| 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 not eligible for the National Register |
| Structure Number | 121020011101335 |