Yep, juvenile black rat. Those are the snakes you want to keep around as they're cannibalistic and will kill and eat the copperheads and timber rattlers that are also found in WV, in addition to doing a great job on the moles, rats, mice, rabbits, etc.

We have at least two six footers living in my yard, usually in the crawl space under the house or in the woodpile. When they get older they're pretty chill, we've had to pick them up and move them aside more than once so they don't get run over by the lawnmower.