第(di)三座金城(cheng)大橋建成時間(jian)2004年新橋主跨105米(mi)(mi),一跨過河,凈(jing)空(kong)7米(mi)(mi),能(neng)滿足(zu)京杭大運河4級航道通航要求。兩邊跨各63米(mi)(mi),分別(bie)跨越運河東路和運河西路。兩端引橋各7跨,每(mei)跨22米(mi)(mi),全橋總(zong)(zong)長539米(mi)(mi)。新橋分南北(bei)兩幅,每(mei)幅寬18米(mi)(mi),中(zhong)央設5米(mi)(mi)寬隔離(li)欄,橋面總(zong)(zong)寬41米(mi)(mi),設雙向6車(che)道,兩側分別(bie)設非機動車(che)道與人行道。建設單位(wei)中(zhong)鐵五局(ju)二公司。
金城橋跨越京杭(hang)大運河,是當時建成于(yu)軟土地基(ji)上(shang)國內最大跨徑的(de)剛架拱(gong)(gong),矢跨比為(wei)(wei)1/10。拱(gong)(gong)肋(lei)為(wei)(wei)工字形,金城主拱(gong)(gong)腿為(wei)(wei)等截(jie)面(mian),實腹段為(wei)(wei)變截(jie)面(mian),在四分點(dian)附(fu)(fu)近截(jie)面(mian)高度最大,分別(bie)向拱(gong)(gong)腳、跨中減小(xiao),為(wei)(wei)使(shi)拱(gong)(gong)軸線(xian)接(jie)近連續(xu),在實腹段四分點(dian)附(fu)(fu)近拱(gong)(gong)肋(lei)下緣設置(zhi)連接(jie)板(ban),使(shi)軸線(xian)下移。1985年建成。