金钢桥改建工程 ,自 1 996年 3月 2 6日动工至同年 1 1月 2 6日建成通车 ,改建后的金钢桥是一座跨海河双层立交桥梁 ,上层高架桥主桥为三跨中承式无推力钢管混凝土系杆连拱 ,引桥为预应力连续箱梁桥 ,专供机动车行驶 ,下层桥为三跨钢与混凝土组合箱型连续梁桥 ,供非机动车、行 The reconstruction project of Jingang Bridge took effect from 26 March 1996 to January 26 of the same year and opened to traffic. The reconstructed Jingang Bridge is a double-decked overpass crossing bridge with the main bridge of the upper viaduct being the third span Zhongcheng thrust-free steel tube concrete tied arch, the bridge is prestressed continuous box girder bridge, designed for motor vehicles, the lower bridge for the three-span steel and concrete composite box-type continuous beam bridge for non-motor vehicles, line