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原文传递 Corps Breaks Ground On Upper Ohio Navigation Project

题名：	Corps Breaks Ground On Upper Ohio Navigation Project
正文语种：	eng
作者：	SHELLEY BYRNE
摘要：	The first shovels of dirt were turned ceremonially on August 11 at Montgomery Locks and Dam to mark the beginning of construction for phase one of the Upper Ohio Navigation Project. The project involves the first three locks and dams on the Ohio River downstream from Pittsburgh: Emsworth (Mile 6.2), Dashields (Mile 13.3) and Montgomery (Mile 13.7). Existing 360- by 56-foot auxiliary lock chambers, the smallest of all lock chambers on the Ohio River, will be replaced with new 600- by 110-foot chambers-the same size as existing main chambers-at each. The Upper Ohio navigation system sees 15 to 20 million tons of materials pass through its river chambers annually, according to the Pittsburgh district. The Upper Ohio Navigation Project is expected to support 28,800 jobs over its construction life, and 5,400 jobs annually after completion. Several federal, state and local officials toured the project site immediately before the ceremony, where several of them spoke. Col. Nicholas Melin, who took over command of the Pittsburgh Engineer District one week prior, noted the history of the Corps of Engineers' involvement in promoting safe navigation on the region's riv- ers, calling it the district's oldest and most enduring mission. "Since 1866, the Corps has delivered practical solutions to travel from the headwaters of the Ohio year-round," he said. The Corps built the first dams in the late 1800s. "They were old-style wooden wicket dams that raised the water level and made the river navigable for shipping in their era," he said. "In 1932, new technology allowed the Corps of Engineers to replace those wooden dams with the gated concrete dams you see in front of you today, bringing the system into the 20th century."
出版年：	2023
期刊名称：	The Waterways Jouranl
卷：	137
期：	21
页码：	5,22-23