肇庆大(da)桥(qiao)，是西(xi)江最大(da)的桥(qiao)。工(gong)程路线全(quan)长(zhang)(zhang)7.8km，桥(qiao)梁长(zhang)(zhang)2.5km，总投资4.58亿元，施工(gong)工(gong)期两年(nian)半(ban)。大(da)桥(qiao)通(tong)航孔(kong)为雄伟的四孔(kong)136m预应力单箱连(lian)续梁（箱宽22m为国内之(zhi)最）。