Final answer:
Bridges and overpasses are more susceptible to freezing than tunnels and intersections because they cool down faster due to air flowing above and below them.
Step-by-step explanation:
When considering roadways that freeze first when wet, bridges and overpasses are known to be more susceptible to freezing than other types of roadways such as tunnels and intersections. The reason behind this is closely related to physics. Bridges and overpasses have air flowing above and below them, which leads to a faster drop in temperature of the road surface compared to roads with ground underneath that can retain some warmth. Intersections and tunnels, being surrounded by structures or terrain, are typically insulated to some extent and thus freeze at a slower rate.