一、右安门人行桥与装配式公路钢桥右安门混凝土桥于六十年代修建,总跨径39米左右,全宽12.2米,该桥近年来不能满足交通量日益增长的需要,汽车、自行车和行人争道而行,交通高峰期间经常发生堵塞现象。一九八三年十月,因交通堵塞,行人越栏而行,将混凝土栏杆扒掉,造成人、栏坠下河坡事故。一九八四年初,市建委要求市政局雨季 I. You’Anmen footbridge and the steel bridge of the assembled highway YouAnMou concrete bridge was built in the 1960s with a total span of about 39 meters and a full width of 12.2 meters. The bridge can not meet the growing traffic demand in recent years. The automobile , Bicycles and pedestrians compete on the road, traffic congestion often occurs during the peak. In October 1983, due to traffic congestion, pedestrians and pedestrians walked away from concrete railing, causing people and barripping downhill accidents. In early 1984, the Urban Construction Commission requested the Urban Council rainy season