Developers of the Keystone XL pipeline secured approval Monday for the pipeline to run through Nebraska, clearing a key hurdle in the years-long fight to build the project.

The decision came after a rupture in TransCanada’s Keystone system spilled an estimated 210,000 gallons of oil in South Dakota last week, an incident that rankled opponents of the XL expansion.

Nebraska regulators approved plans for Keystone XL to cross the state, though the approval didn’t cover TransCanada’s preferred route through the state. The commission voted 3-2 to move the project forward.

The approval comes eight months after President Trump issued a presidential permit for the $8 billion, 860-barrel-per-day project.