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Which type of drainage system is designed to intercept and divert water beneath the roadbed?
61. Which type of drainage system is designed to intercept and divert water beneath the roadbed?
- Surface ditches
- French drains
- Cross-drains
- Culverts
Answer
The correct answer is: B) French drains
Explanation
French drains are installed below the roadbed to manage subsurface water and prevent saturation-induced damage.