North L ST over Big Island Slough
Fair Condition57 years old4,930 vehicles/day
Location
| State | Texas |
| County | Harris |
| Location | 0.5 Mi E Of Underwood RD |
| Carries | North L ST |
| Crosses | Big Island Slough |
| Coordinates | 29.67998, -95.07917 |
Condition Ratings
| Overall Condition | Fair |
| Deck | 6 (Satisfactory) |
| Superstructure | 7 (Good) |
| Substructure | 6 (Satisfactory) |
| Channel/Waterway | 7 (Good) |
| Scour Critical | 5 — Stable for scour |
Physical Characteristics
| Material | Concrete |
| Design | Stringer/Multi-beam |
| Total Length | 99.1 ft (30.2 m) |
| Max Span | 33.1 ft (10.1 m) |
| Deck Width | 33.8 ft (10.3 m) |
| Deck Area | 311.1 sq m |
| Main Spans | 3 |
| Year Built | 1969 |
Traffic
| Avg Daily Traffic | 4,930 (2009) |
| Lanes On Bridge | 2 |
Inspection & Ownership
| Last Inspection | 923 |
| Inspection Frequency | Every 24 months |
| Owner | County Highway Agency |
| Historical Significance | Bridge is possibly eligible (requires evaluation) |
| Structure Number | 121020AA0103001 |