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On Monday, May 26, 2008, at approximately 11 p.m., rocks fell onto two eastbound lanes of I-90 just one-half mile west of Snoqualmie Pass. There were no personal injuries, even though at least two passenger cars and a semi truck ran over the rocks and were damaged. WSDOT maintenance crews cleared a few fairly large rocks (about 18” in diameter) and many smaller rocks that landed on the right two lanes in this four lane section. Crews have closed one eastbound lane by installing concrete barrier and temporary rockfall protection fence to prevent additional rocks from entering the roadway. Geotechnical crews have assessed the existing slope and determined the best solution. WSDOT hired emergency contractor Hi-Tech Rockfall Construction, Inc., who started work on Thursday, May 29 to stabilize the slope. WSDOT is keeping three eastbound lanes open to traffic while the work is completed. View more photos on Flickr.Installing and repairing rockfall cable netting.Installing temporary rockfall protection fence.Damaged rockfall netting covering the existing slope. Concrete barrier was installed to provide additional protection from falling rocks.Initial clean-up efforts Monday night cleared the large rocks.