The Spokesman-Review reported that their plans were foiled by a confidential tip that Bryan J. Storms and Kirk A. Beaulieu had spent a week working to remove the window in their cell.
The two, who both face trial for violent crimes, have been cellmates since September on the fifth floor of the jail.
The tipster also told officials that someone "on the outside" would help the inmates escape.
Corrections officers found a damaged window and the homemade rope when they searched the cell.
Both men will now face additional charges of attempted second-degree escape.
More Northwest Headlines
2 Yakima County men sentenced for killing eagles USGS awards $4M in Northwest, California for earthquake early warning systems Commuter train hits vehicle in Puyallup, kills 1 woman Ex-tribal police chief pleads guilty to stealing from Swinomish Tribe Hearing Friday on suit over Kurt Cobain death-scene photos Guilty plea in crash through Sammamish home that killed 2 Suit seeks to block anti-tax measure from Washington ballot Shell icebreaker retreats after showdown with protesters
Our new comment system is not supported in IE 7. Please upgrade your browser here.