YAKIMA, Wash. -

The Washington Supreme Court has upheld the state's approval for a wind farm on the north side of the Columbia River Gorge.

Former Gov. Chris Gregoire approved the project last year upon the recommendation of the Energy Facility Site Evaluation Council after the project was scaled back from 50 to 35 turbines. Opponents sued, arguing that the project developers failed to address impacts to migrating birds and other issues.

The Supreme Court on Thursday unanimously upheld the state's approval, saying the developers had met requirements of the application process.

The Whistling Ridge Energy Project faced stiff opposition given its proximity to the Columbia River Gorge National Scenic Area, which was created in 1986.