I was driving east on 18 approaching the old Kent narrows draw bridge when I noticed the lights in the sky. Sort of freaked me out at first because I thought it was a 747 or such from BWI trying to make a landing attempted on the bridge. 2 white lights next to each other in the center and faint red at the ends of the wings. As I got closer the craft appeared to be stationary which I thought was weird for an aircraft of the size it appeared to be. I turned under the overpass to the park and ride to see if I could get some pictures but couldn't see it so jumped over to the fishermans in crab deck parking and noticed it had disappeared. I drive a Prius and was on battery with the windows cracked and there was absolutely no noise. If this was a jet or other aircraft I would have expected to hear the engine noise at least. Talked to the workers at the crab deck and they saw it as well but they looked away and it was gone. The craft appeared to be 150 feet at least from tip to tip and wings came out of the base a little bit then swept up on a 30 degree angle. Brief glimpse I got of the shadow. Fairly dark other then the 4 lights. Aviator for 10 years in the army and the was the first time I have ever seen anything like this.