第三(san)座金城大橋(qiao)建成時(shi)間2004年(nian)新(xin)橋(qiao)主跨(kua)105米(mi)(mi)(mi),一跨(kua)過(guo)河(he),凈空7米(mi)(mi)(mi),能滿足京杭大運(yun)河(he)4級航(hang)道(dao)通航(hang)要求。兩(liang)(liang)(liang)邊跨(kua)各(ge)63米(mi)(mi)(mi),分別跨(kua)越運(yun)河(he)東路和運(yun)河(he)西路。兩(liang)(liang)(liang)端引(yin)橋(qiao)各(ge)7跨(kua),每(mei)跨(kua)22米(mi)(mi)(mi),全橋(qiao)總(zong)長539米(mi)(mi)(mi)。新(xin)橋(qiao)分南(nan)北兩(liang)(liang)(liang)幅,每(mei)幅寬18米(mi)(mi)(mi),中央設(she)5米(mi)(mi)(mi)寬隔離(li)欄,橋(qiao)面總(zong)寬41米(mi)(mi)(mi),設(she)雙向6車道(dao),兩(liang)(liang)(liang)側分別設(she)非機(ji)動(dong)車道(dao)與人(ren)行道(dao)。建設(she)單(dan)位中鐵五局二(er)公司。
金城(cheng)橋跨越京杭大運河,是當時建成于(yu)軟土地基上國內最大跨徑的剛架拱(gong)(gong),矢跨比為(wei)(wei)(wei)1/10。拱(gong)(gong)肋為(wei)(wei)(wei)工字形,金城(cheng)主(zhu)拱(gong)(gong)腿(tui)為(wei)(wei)(wei)等截(jie)面,實(shi)腹(fu)段為(wei)(wei)(wei)變截(jie)面,在四(si)分點(dian)附(fu)近截(jie)面高度最大,分別向拱(gong)(gong)腳、跨中減小,為(wei)(wei)(wei)使拱(gong)(gong)軸線(xian)接近連續,在實(shi)腹(fu)段四(si)分點(dian)附(fu)近拱(gong)(gong)肋下緣設置(zhi)連接板,使軸線(xian)下移。1985年建成。