The construction area of "TIAA MRT System Zhongli Train Station Extension Construction Project CM01 Section Tender" covers 2.06km ranging from the southern side of Huanbei Station (A21) starting at Zhongfeng Road and Huanbei Road intersection ending at Zhongli Station (A23) which is located south of TRA Zhongli Station. Also included in the tender, Laojie River Station (A22) is located near the intersection of Zhongyang W. Road and Zhongzheng Road. In addition, a cross-over is installed on Zhongzheng Road and a shield tunnel working shaft that will future connect the Taoyuan Metro Blue Line network is installed at the terminal end of A23 Station.
Continental Engineering Corp. won the CM01 construction tender on Nov. 26, 2013 and broke ground on Dec. 28 in the same year. During the initial phase of construction, the contractor not only continually submitted relevant project proposals, but also assumed control over the right-of-way of Zhongfeng Road on Feb. 20, 2014. Moreover, installation of simplified channel fences, pedestrian sidewalks excavation, demolishing of original plot of lands and laying temporary concrete at the construction site were processed in course of the initial phase. By Mar. 1, the contractor has embarked on installation of A-type fences in Yunghsing Park and demolishing the original planting and landscapes in the park.
The Partial Traffic Maintenance Plan of A22 Station was ratified by Transportation Bureau, Taoyuan County Government on Mar. 11, 2014 in which the construction fences (B type) were installed on the west side of Zhongfeng Road on Mar. 14 during nighttime. Next, construction actions including demolishing original plot of land, pre-pipeline digging testing, supplementary geological investigation, temporary draining, and demolishing the original drainage system were performed. Then, temporary concrete were laid out on the construction surface, the channel, wall surface and ground surface of diaphragm wall were modified and micropiles were installed. The excavation of diaphragm wall channels commenced Jun. 14 and construction of diaphragm wall test unit F17 began on Jun. 20, 2014. Total of 55 diaphragm wall units installed on the west side of Zhongfeng Road were from June to September. The second stage of A22 station partial traffic maintenance were executed on Sep. 12, 2014 and subsequent installation of diaphragm wall on the east side of Zhongfeng Road will be continued.