Metallic disc hovers near road in northeast pensacola

I was traveling east on Hwy 90 from Pensacola toward Milton at approximately 1 in the morning after a late night at work when I spotted an object hovering approximately 1/4 mi from the main road on the north side. There is a series of short bridges in this area so I traveled past the bridges (and the object) and pulled off to the right side of the road to get a better look.
 The object continued to hover approximately 25' above the ground/water  (it was actually right over this fish camp that had boat launches, etc, right at the edge of the water).  The object made no sound whatsoever. It did have lights, but it happened so long ago I can't accurately recall what colors other than red, which were rotating. I would estimate the size of the disc to be about 30' wide by about 15' high. It seemed to have a metallic finish, if memory serves me correctly.
 I leaned on the back of my car watching the object for around 20 minutes if not longer. Eventually, it slowly moved off at a slow rate of speed to the southeast toward Pensacola. I watched it till it disappeared.
 I was very close to the object the whole time, approximately a couple hundred yards. There were no other witnesses that I'm aware of. Actually, that's how I ended up here. I was curious as to whether anyone else had reported anything similar. I told very few people about it at the time out of fear of being laughed at. Not to mention, I really had trouble accepting it. The moment I got back in my car, my mind started disproving it. It was a very unnerving experience.
 For the record, I had not been drinking. I have never reported this anywhere else. Just wanted it documented somewhere. Now, maybe I can forget about it.
Date is approximate.  PD