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Civil Engineering

National Highway No. 3 Contract C348

Project Type
Tunnel & Underpass
Chiayu County

Architect / Supervising Engineer

Sinotech Engineering Consultants Ltd.


Taiwan Area National Expressway Engineering Bureau, Ministry of Transportation and Telecommunications
*Merged into the Freeway Bureau in 2018


Reinforced concrete (RC)

Scope of Work

  1. Bridge: 3 pre-stressed concrete I beam viaducts with a total length of 440 m
  2. Mountain tunnel: Twin tube highway tunnel with an excavation section of about 170 m2 and 3 lanes each;  the north bound line is 1,212 m long and the south bound line is 1,254. 5 m long.


Tunnel was built with New Austrian Tunneling method (NATM).

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