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美国陆军工程师兵团北太平洋区波特兰分区目前正在哥伦比亚河上最下游一级——邦纳维尔水利枢纽上建一座新船闸(见封底图3),以取代1938年建成的老船闸。新船闸尺寸为:长205.74m,宽26.5m,槛上水深5.79m;船闸最大水头为21.4m;最大设计船队为:长198.12m,宽25.6m,最大吃水4.27m;规划货运量为1300～3000×10~4t。该船闸已于1987年7月开挖闸室,计划于1989年9月完成混凝土发包设计,混凝土工程施工将于1990年1月开始,主体工程于1992年完成,1992年4月投入运行。
The US Army Corps of Engineers Portland North Pacific Division is currently building a new lock (see Figure 3 on the back cover) at the Bonneville Hydroelectric Project, the most downstream level on the Columbia River, to replace the old lock built in 1938. The size of the new ship lock is 205.74m long, 26.5m wide and 5.79m deep on the threshold. The maximum head of the ship lock is 21.4m. The largest design fleet is 198.12m long, 25.6m wide and 4.27m maximum draft. The planned freight volume is 1300 ~ 3000 × 10 ~ 4t. The lock has been excavated in July 1987 and the sluice gate is planned to be completed in September 1989. The concrete construction will start in January 1990 and the main construction was completed in 1992 and put into operation in April 1992.