貴州安江高速公路凱峽河大橋全長1122.5米，主橋采用118+ 220+160+58米的變截面預(yù)應(yīng)力混凝土連續(xù)剛構(gòu)箱梁，最大墩高達(dá)140米，主跨徑為當(dāng)時同類橋梁之最，高墩大跨連續(xù)鋼構(gòu)施工難度大。
　　1122.5m Kaixia River Bridge of Jiangkou-Weng'an Expressway in GuizhouProvince has a main bridge of variable section prestressed concrete continuousrigid frame box girderis, in 118+220+160+58m. The maximum pier is up to 140m.Its main span ranked the first of its kind at that time. The construction ofthe high pier and long span continuous steel structure is very difficult.