US / Dakota Access Pipeline Army Will Allow Completion of Dakota Access Pipeline Will allow pipeline to cross under Lake Oahe By Newser Editors and Wire Services Posted Feb 7, 2017 3:02 PM CST Copied In this Nov. 20, 2016, file photo, provided by the Morton County Sheriff's Department, law enforcement and protesters clash near the site of the Dakota Access pipeline in Cannon Ball, ND. (Morton County Sheriff's Department via AP, File) The Army has notified Congress that it will allow the $3.8 billion Dakota Access pipeline to cross under a Missouri River reservoir in North Dakota, completing the four-state project to move North Dakota oil to Illinois, the AP reports. The Justice Department filed court documents Tuesday including letters to members of Congress from Deputy Assistant Army Secretary Paul Cramer. The Army intends to allow the crossing under Lake Oahe as early as Wednesday. The crossing is the final big chunk of work on the pipeline. The Standing Rock Sioux tribe worries a pipeline leak could pollute drinking water. It's promised to continue legal challenges. Dallas-based pipeline developer Energy Transfer Partners says the pipeline is safe. (More Dakota Access Pipeline stories.) Get breaking news in your inbox. What you need to know, as soon as we know it. Sign up Report an error