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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?

1. Surface ditches
2. French drains
3. Cross-drains
4. 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.