For this kind of landscape shot, it is important to have a significant depth of field. Having an overall clarity to the entire scene is key. The detail in the old wood on the bridge, the frost on the grasses beyond, the dirt road leading to the treed area in the background are important, each one.
Because of this, I chose to use an aperture of f/20. This required a slower shutter speed to allow as much light in as possible. Because I didn't have my tripod handy, I used 1/50, a reasonable speed for a hand-held camera.