A federal judge in Washington denied a preliminary injunction that would have stopped construction on the Dakota Access Pipeline in North Dakota and South Dakota.

In an opinion issued Friday afternoon, District Judge James Boasberg said the pipeline would not cause irreparable harm to the Standing Rock Sioux tribe. The tribe had sought the injunction because the oil pipeline would cross the Missouri River upstream from its tribal lands, meaning a leak could endanger its water supply and it could sully sacred lands.