The Sun-Moon Lake hydropower system is a hub of power supply during peak hours in Taiwan. The New Wuchieh Tunnel and Lishi Creek Diversion Project is to conserve the water resources of Sun-Moon Lake and its hydropower system to achieve the goal of sustainable management of water resources. The project will add 80,000,000 kwh/year of capacity as well as improve the utilization rate and reliability of the system.

This project had two special features:
1) The original design called for the 9 km twist and turn river crossing tunnel to be excavated by Drill and Blast method was changed to a 7 km straight section to be excavated by TBM.
2) An arched water pipe bridge crossing the Jhuoshuei River: the loading capacity of an arch bridge is 10 times of a concrete highway bridge. This 120m wide arch bridge is 55m higher than the river surface. To avoid the water release of upstream Wuchieh Dam endangering the construction safety, it was the first time in Taiwan to adopt Concrete Lapping Method with Pre-erected Composite Arch (CLCA) for a river-crossing water pipe bridge.

The construction works were divided into Lot I-A and Lot I-B. Lot I-A included dam, water intake, long diversion tunnel, and river-crossing arched water pipe bridge. The concrete works was the most difficult part of the project.

During the construction period, the project was hard hit by the disastrous 921 Chi-Chi Earthquake, Typhoon Toraji, and Mindulle flood one after another. Fortunately, Sinotech overcame all these difficulties and maintained construction quality to reach expected goal. Thus, Sinotech won the 2009 Superior Concrete Work given by Taiwan Concrete Institute.