To me it looks positively like an Eastern Milksnake, lampropeltis triangulum triangulum. I catch these guys by the buttloads each summer, from hatchlings to adults. As babies they are bright white with brilliant red saddles boredered in black. They tend to lose their luster as an adult, and fade to a dull gray/tan with brownish red saddles. The adults I have caught I find, if they don't immediately become aggressive, they will act all calm and friendly, you pick them up, and then out of nowhere they give you a good hard bite! Usually the moment you are in their presence they are making every attempt to coil, strike, and rattle their little tail. Many people in rural areas refer to this species as "Spotted Adder".

Here are some pictures of some I found last year:

hatchling female I kept and still have, eats better than most cali kings!!!


baby male in shed


angry adult female


another that was calmer