The Dajia to Da’an section of Provincial Highway No. 61 (West Coast Expressway) in Taichung City was initially constructed as an at-grade road to meet local development needs. As part of this configuration, thirteen at-grade intersections were designed to connect the expressway with local roadways. Since its opening in 2000, this section has experienced a high frequency of traffic accidents at these intersections due to increasing vehicular volumes, posing significant safety concerns for road users.

To enhance roadway safety and improve overall traffic efficiency, the Directorate General of Highways (DGH), through the Central Region Construction Office for the West Coast Expressway, initiated the “Elevated Mainline Construction Project – Dajia to Da’an Section” in 2011. The elevated structure is designed to bypass all existing at-grade intersections, thereby segregating express traffic from local flows.

The Taiwan Taoyuan International Airport Access MRT System, commonly known as the Taoyuan International Airport MRT, is a rapid transit system planned to connect Taipei and Taiwan Taoyuan International Airport, before linking up with the Taoyuan MRT to THSR Taoyuan Station and onwards to Zhongli. 

Construction began in 2006 and the system is scheduled to begin service in June 2013. Construction is being overseen by the Bureau of High Speed Rail of the Ministry of Transportation and Communications, which oversees the construction of the Taiwan High Speed Rail as well as regional rapid transit systems (except the Taipei Metro and Kaohsiung MRT) in Taiwan.

Constructed method of CE03B

1.Balanced cantilever

2.Cast-in place method

3.Advance shoring method

4.Steel box girder

The C705 contract section (Songzhu to Yucai segment) is part of Taichung’s Urban Road Network Project, integrating the eastern segment of Route 2, the northern segment of Route 4, the at-grade road extensions, and the Dali connector. This project adopts the BE post-tensioning system. It plays a key role in forming a complete expressway system in the Greater Taichung area, connecting National Highways No.1 and No.3, the Zhongtou Expressway, and the Zhongzhang Expressway to maximize transportation efficiency.

Upon completion, travel time between Tanzih and Wufeng will be reduced from the current 60 minutes via Provincial Highway 3 to just 15 minutes. The project is expected to save approximately 2.44 million liters of fuel and reduce carbon dioxide emissions by around 5,500 metric tons annually. Moreover, by replacing part of the cement with ground granulated blast furnace slag (GGBFS), approximately 21,000 metric tons of cement use will be avoided, contributing to a further CO₂ reduction of around 19,000 metric tons—highlighting the project's strong environmental commitment.

The Anping Port Cross-Harbor Bridge is a critical infrastructure project initiated by the Tainan City Government in response to the national policy of separating commercial and fishing port functions. With the opening of the old fishing port channel, areas such as the Sankunshen Wharf District and Yuguang Village in Tainan City would become geographically isolated. To ensure proper connectivity and maintain accessibility for both residents and port operations, the Kaohsiung Port Authority proposed the construction of this cross-harbor bridge.

The bridge, known as the Yuguang Bridge, spans the secondary navigation channel of Anping Port and the boundary between the port and the city. It measures 320 meters in total length and is designed as a five-span, four-pier reinforced concrete arch bridge. Construction methods include shored formwork for the side spans and a cantilever method for the central span. The approach roads extend approximately 266 meters in total, and the full bridge width is 24.5 meters. Dedicated lanes are planned to serve both the Anping Port area and the urban districts of Tainan. 

The WH33-1 section of the West Coast Expressway utilizes the BE post-tensioning system, which is designed and manufactured by our company. This project covers Sections WH33-1 to WH33-4, extending from Tongwan in Tongxiao Township to Chushui in Yuanli Township, Miaoli County, from kilometer mark 123K+800 to 130K+905. The total length is approximately 7.9 kilometers, consisting of a 7.1 km mainline and a 0.8 km connector road. Major works include approximately 6.9 km of viaducts, 1 km of embankment road, one interchange, and two on/off ramps (with an additional ramp reserved).

The bridge types employed include span-by-span erection, balanced cantilever construction, pre-stressed concrete I-girders (PCI), and hollow slab beams. Box girder cross-sections are rounded for improved aerodynamics and aesthetics. Typical spans range from 40 to 60 meters, while the crossings over Nanshi Creek and Yuangang Fishing Harbor are constructed using the balanced cantilever method, with a maximum span of 150 meters.

Reference: CECI Engineering Consultants, Inc., Taiwan