The court case that the Obama administration cited last April in putting off a decision on the Keystone XL pipeline has concluded, lifting a key obstacle for a project that’s been in limbo for more than six years.

The Nebraska Supreme Court, overturning a lower court’s ruling, allowed the pipeline’s route through that state to stand. Landowners in Nebraska challenged Gov. Dave Heineman’s 2012 approval of the project. Four of the court’s seven judges sided with the landowners, agreeing that the state’s Keystone legislation was unconstitutional. (See an interactive map of the Keystone XL route.)

That number wasn’t enough: The state requires a supermajority of five judges to concur in order to strike down legislation.