In cold, wet weather, what can be said about roadways on bridges and overpasses?

• They are less likely to freeze due to their concrete construction.
• They tend to freeze at the same rate as the rest of the road.
• They tend to freeze before the rest of the road does.
  Explanation:

  "Roadways on bridges and overpasses often freeze more quickly than the rest of the road because they are exposed to colder air from above and below."
• They have no specific freezing characteristics in such weather conditions.