Preheat your oven to 350°F (175°C). Grease a 9x5 inch loaf pan.
In a large mixing bowl, combine the flour, sugar, baking powder, baking soda, and salt.
Stir in the cranberries and nuts.
In another bowl, mix together the orange juice, orange zest, vegetable oil, and beaten egg.
Add the wet ingredients to the dry ingredients, stirring just until moistened.
Pour the batter into the prepared loaf pan.
Bake for 60 minutes, or until a toothpick inserted into the center comes out clean.
Let the bread cool in the pan for 10 minutes, then transfer to a wire rack to cool completely.