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西单商场人行天桥工程(简称西单天桥)由市政四公司机械处承担施工。4月份完成了全部拆迁工程,五月三日晚正式动工,开始桥基挖土,同时钢桥制造在机械处工场进行预制。六月十二日开始吊装地面以上工程至六月二十九日全部完成。现场施工延续近两个月,实际工作日约34天。施工期间不曾中断交通,各个制构件的加工和安装精度均达到了设计要求。
Xidan Shopping Center pedestrian bridge project (referred to as Xidan Flyover) by the municipal four companies bear the construction machinery. The demolition project was completed in April and the construction was officially started on the evening of May 3 to start excavation of the foundation. Meanwhile, the steel bridge manufacturing was prefabricated at the machinery workshop. The above ground lifting works started on June 12 will be completed by June 29. Site construction lasted nearly two months, the actual working day of about 34 days. Traffic has not been interrupted during the construction period, and the machining and installation accuracy of each system component have met the design requirements.