By Andrew Harris,Meenal Vamburkar and Kevin Orland, (c) 2017, Bloomberg Nebraska’s approval of an alternative route could throw more uncertainty into the mix for the long-delayed Keystone XL oil pipeline. The Public Service Commission approved TransCanada Corp.’s project on a three-to-two vote, removing one of the last hurdles to the Calgary-based company’s construction of the $8 billion, 1,179-mile (1,897-kilometer) conduit, which has been on its drawing boards since 2008. The decision, though, wasn’t wrinkle-free: The commission approved an alternative route that was immediately targeted by the project’s opponents as lacking adequate vetting. Jane Kleeb, president of the environmental advocacy group Bold Alliance, said green-lighting the alternative may have helped the commission reach a “middle ground solution.” But it opens new questions that she said her group would explore in federal court. That view mirrored a dissenting opinion from Commissioner Crystal Rhoades, who spoke before the final vote.