I checked out Bellevue's newest bike trail and it's awful. The reason is that it crosses several side streets and lots of driveways all with terrible sightlines. I recipe for getting hit if you ride on it. But to make it the city took out the shoulders on the road, so if you ride in traffic it's twice as hard for a car to pass you and you have no place to bail if they decide to brush you in passing.
Grade F for bicycling. Looks ok for runners through.