Anyone know what type of snake this is?

A would say a dead Nerodia sipedon. Northern Water Snake.

I believe thats a Nerodia fasciata picteventris, Florida (banded) watersnake. I'm from Jersey and personally I've never seen a northern watersnake so beatiful on the back, though usually the colors show through the sides though...Beautiful harmless snake, too bad it seems to be roadkilled(?).
-Sean

Yes, that is a northern watersnake i grew up in the n.j. pine barrens and seen plenty of them. Too bad this guy did not make it