Definition

1. Noun:
   • Viaduct: A bridge, often with multiple arches, that carries a road or railway across a valley, another road, or other obstacles.
   • Underpass: A tunnel or passage that goes underneath a road, railway, or other barrier, allowing pedestrians or vehicles to cross safely. (This meaning aligns with the French reference "saut-de-mouton," which literally means "sheep jump" and refers to a grade-separated crossing, often an underpass or overpass.)

Usage Examples

• Noun:
  • Xe chạy qua cầu chui để sang bên kia đường. (The vehicle goes through the underpass to get to the other side of the road.)
  • Thành phố xây một cây cầu chui mới cho đường sắt. (The city built a new viaduct for the railway.)
  • Để an toàn, người đi bộ nên sử dụng cầu chui. (For safety, pedestrians should use the underpass.)

Advanced Usage

• "cầu chui dành cho người đi bộ": pedestrian underpass.

  • Cầu chui dành cho người đi bộ này rất rộng rãi và sáng sủa. (This pedestrian underpass is very spacious and well-lit.)

• "cầu chui đường sắt": railway viaduct.

  • Cầu chui đường sắt này được xây dựng từ thế kỷ 19. (This railway viaduct was built in the 19th century.)

Variants and Related Words

• Hầm chui (n): Another term for an underpass or tunnel, often used interchangeably with "cầu chui" for the underpass meaning.

  • Phía trước là hầm chui xuyên núi. (Ahead is the mountain tunnel.)

• Cầu vượt (n): Overpass; a bridge that carries a road or path over another road, railway, etc. (This is the opposite structure of an underpass).

  • Giao thông được cải thiện nhờ cầu vượt mới. (Traffic improved thanks to the new overpass.)

Synonyms

• Đường hầm (n): Tunnel (specifically for the underpass meaning).
• Cầu cạn (n): Viaduct (specifically for the elevated bridge meaning).

Related Phrases (Phrasal Verbs)

(This section is less common for nouns in Vietnamese, but related grammatical constructions can be shown.) - Đi qua cầu chui: To go through an underpass/viaduct. - Chúng tôi phải đi qua cầu chui để đến trung tâm thương mại. (We have to go through the underpass to get to the shopping mall.)

Related Idioms

(There are no common idioms directly using the word "cầu chui".)

1. Viaduct