According to the Almightly Internet, she's a Blanding's turtle, about 55-60 years old judging by size. She might live another ten years or more. The odds are good as long as she stays away from roads.
I met her a couple years ago, but posted it now because this is the time of year she came through my yard. It's also the time of year we commonly have to stop to move turtles out of the road around here. (Unless they're snapping turtles, in which case I just wish them luck. Not going near those suckers.) Turtles in the road are so common in June that I had to research this one. As suspected, they are most likely females, on their way from one pond to another to lay their eggs. (Mixing the DNA to avoid inbreeding - nature's smart that way.) This particular turtle has probably been doing it since she was between 14-20 years old, taking a quarter mile hike to the closest pond to lay her eggs. No small trip on turtle legs.
Every year! A quarter mile each way! What do you want to bet she's cursing the male turtle who knocked her up every inch of the way?