解放前,黄河上仅有三座桥梁,即:兰州黄河公路桥、京汉铁路黄河桥和津浦铁路黄河桥。这三座桥梁,都是委托外商承办修建的。解放以后,由于党和人民政府的重视,1955年建成了河口黄河桥(照片1)。这是我国第一座自行设计与施工的黄河桥。它标志着我国桥梁事业的发展,随着人民革命的胜利,进入 Before the liberation, there were only three bridges on the Yellow River, namely the Lanzhou Yellow River Highway Bridge, the Jing-Han Railway Yellow River Bridge and the Jinpu Railway Yellow River Bridge. These three bridges are commissioned by foreign contractors to build. After the liberation, due to the great importance of the party and the people’s government, the estuary Yellow River Bridge was built in 1955 (Photo 1). This is our first design and construction of the Yellow River Bridge. It marks the development of the bridge enterprise in our country and enters with the triumph of the people’s revolution