Contract A3 is located in Nanao Township, Yilan County, and primarily consists of bridge structures. The total route length is approximately 2.07 kilometers for the southbound lane and 2.04 kilometers for the northbound lane.

The section starts from Dong'ao Ridge in Nanao Township and connects at the northern end to the Dong'ao North Creek Bridge and the southern portal of the Dong'ao Tunnel. Large-span bridges are employed along the route to cross tributaries of Dong'ao North Creek. At kilometer marks 8K+030 and 8K+110, the bridges span over the old and new North-Link Railway lines, respectively. The route then crosses the main stream of Dong'ao North Creek via bridge and transitions into a tunnel through the mountainous terrain.

Near the tunnel’s southern portal lies the dedicated railway used by Hsingfu Cement for gravel transport, which is also spanned by a bridge. The subsequent section is constructed as an embankment. 

The entire project was successfully completed and opened to traffic on April 8, 2016.

Provincial Highway No. 26 is one of the key coastal highway systems on the Hengchun Peninsula in southern Taiwan. It begins in Fenggang, Pingtung County, and passes through Hengchun, Eluanbi, Gangkou, Gangzai, and Xuhai, ending in Anshuo, Taitung County, with a total length of 110.046 kilometers.

To enhance connectivity between the tourist destinations in Pingtung and Taitung Counties, promote balanced regional development, strengthen the local transportation network, and respond to long-standing demands from residents, the project was approved by the Executive Yuan in 2003 (Year 92 of the ROC calendar).

The planned improvement covers approximately 11.9 kilometers, with a total budget of NT$1.858 billion, and is divided into six construction contracts.

To improve accessibility for residents in Nantian Village and surrounding areas, marking a new milestone in the connectivity of this region.

The “Holding Hands Bridge” spans between Wangyou Lake and Youqing Lake, connecting two detention basins on either side with a combined flood retention capacity of 6,000 cubic meters.

The surrounding area is designed with native plant species and eco-friendly construction techniques, creating a low-disturbance, diverse, and low-maintenance ecological conservation zone.

In addition to providing essential flood control and disaster prevention functions, the area has become a sanctuary for both resident and migratory birds.

A birdwatching platform is also located along the shore of Wangyou Lake, allowing visitors to observe a variety of waterfowl and appreciate the rich biodiversity and beauty of the wetland ecosystem.

Approved by the Executive Yuan on February 19, 2009, this project was initiated as part of Taiwan’s Economic Stimulus Public Construction Program, with the overarching goal of enhancing railway transportation efficiency and service quality along the east coast, while promoting balanced regional development.

Commencing in 2008 and scheduled for completion in 2015, the project covers the railway stretch between Hualien Station and Zhiben Station, totaling approximately 166.1 kilometers. The scope of work includes full electrification of the line and double tracking at four major bottleneck sections, along with improvements to track curvature for better train stability and speed.

With an estimated budget of NT$25.429 billion, the project spans both Hualien and Taitung counties. Upon completion, it is expected to significantly increase transportation capacity, reduce travel time, promote tourism and local industries, and realize the long-term vision of a fully electrified, modernized railway system in eastern Taiwan.

Since its opening in 1978, National Freeway No.1 has played a vital role in Taiwan’s economic development. The section from Wugu to Yangmei is especially significant, as it connects the political and economic center of Greater Taipei with the key technology and industrial hubs in central and southern Taiwan. Additionally, it links directly to Taoyuan International Airport, making it not only the economic lifeline of the country but also a critical international gateway. In recent years, rapid population growth and intensified economic activity have resulted in significant congestion along this corridor, severely diminishing the freeway’s service level and overall efficiency. To relieve traffic bottlenecks, restore intercity mobility, and enhance Taiwan’s competitiveness, the widening project was initiated as a strategic infrastructure improvement.

The project spans approximately 40 kilometers, from the elevated Wugu Viaduct in Xizhi District (KM 31) to the Yangmei Toll Station in Taoyuan (KM 71). It follows the existing alignment of Freeway No.1 and traverses several key municipalities, including Wugu, Taishan, Linkou, Guishan, Luzhu, Taoyuan City, Zhongli, Pingzhen, and Yangmei.