Snapping or Painted Turtle?

Found this gal trying to lay some eggs about a foot off of the road next to a retaining wall and placed in a safer spot.  I hope I didn't screw up the circle of life.  It's that time of year, so drive slow and keep an eye out for turtles on the road.

I thought it was a snapping turtle, but a friend says it may actually be a painted turtle.  Do you know?