Construction Tender CE01C was the last contracted civil tender of TIAA MRT Project in which the viaduct constructions of this tender are all located at the heavy-traffic Provincial Highway No. 1. During planning stage, the designing team did pipeline digging tests, gathered pipeline authorities information, investigated on foundation types of alongside houses. However, the pipelines were more complex than expected and the team was unable to finish pipeline relocation in advance, the team would need to coordinate with pipeline authorities for arrangement of temporary or permanent relocation after ground breaking.
The complicated pipelines on Provincial Highway No. 1 included electricity pipes, water pipes, gas pipes, telecommunication lines, network lines, traffic signal lines, drainage pipes, sewage pipes, etc. Moreover, the locations of actual underground pipeline were usually different from the blueprints. Therefore, it is necessary to increase digging tests, frequently conduct on-site inspections with coherent authorities, and adjust construction procedures or methods accordingly before breaking ground. With seamless cooperation and hard work of the construction team and pipeline authorities, the construction was completed as scheduled and there weren't any significant pipeline damages during construction period that impacted local residents.
In February 2009, during initial construction period, we were requested by Road Traffic Safety Committee, ex-Taipei County that in coordination with Taipei Metro Xinzhuang Line construction work taking place at Zhongcheng Road, which is a traffic artery, we should retain at least 3 traffic lanes in both directions at all sections of construction area despite of the construction work. However, inspection results from Xinzhuang Public Works Office showed that roadside stores privately installed slope-ways that occupied some sections of the pedestrian sidewalks for their own convenience. This situation resulted in width reduction in the outer lane which may cause cars and motorcycles fighting for traffic lanes. Therefore, Xinzhuang Public Works Office suggested authorities in charge of sidewalk construction, Ex Taipei County Public Works Department, Taishan Township and Xinzhuang City Hall, to agree on letting BOHSR remove the private-installed slope-ways and build an embedded sidewalk in replacement. After aggressive communication from the representative of Xinzhuang Public Works Office and other authorities, the suggestion was finally agreed and the dangerous factor was resolved.
In early April same year, upon the beginning of bridge substructure and pile construction, liquid cement was often spilled onto passing vehicles and pedestrians from the grabs due to unpredictable wind blowing. There was one time a motorist who was fully dressed for a wedding got himself splashed with cement when passing by and all the construction contractor could do was apologize and provide compensation. On account of limited shared space of the construction area and Provincial Highway No. 1, similar complaints exceeded 100 cases in just a year since the start of pile construction. The construction team has been continuously examining and improving construction methods and process according to construction status and on-site situation including increase protection nets, extend grab standing period, set height limit and coordinate with traffic signs to reduce as much impact on road users as possible.
Provincial Highway No. 1 nearby districts including Xinzhuang and Taishan consists of massive illegal buildings which led to improper drainage. When encountering typhoons or heavy rain, the intersecting roads become waterways and numerous puddles. During construction period, legislators, county governments and local district offices demanded such conditions to be improved; however, the problem was not caused by construction factors but should be resolved by local authorities to improve the district's drainage systems. Moreover, reasonable petitions on noise barrier request and complaints on nearby building damages are ordinary during construction.
Tender CE01C viaduct construction is the tender with the most interfaces and shortest construction period among all TIAA MRT civil engineering tenders. The viaduct construction used massive PRC pillars and steel pillar launching method and processed superstructure and substructure construction simultaneously to reduce construction period as well as the impact toward Provincial Highway No. 1 traffic. The pillars could only be transported to and fro the construction site and precast factory after 10pm each day and cease by 6am each morning for smoother traffic on the provincial highway. Traffic Management Proposals should be submitted and fully discussed with local authorities according to each construction situation to achieve complete traffic management measurements. After 2 years and 5 months and overcoming numerous obstacles, this 4.5 km MRT viaduct was finally and successfully completed within schedule and passed on to the following E& M tender for rail installation. Moreover, the construction was awarded with the Golden Way Awards by MOTC.