Final answer:
In wet weather and near freezing temperatures, bridge roadways may freeze and become slippery, while highway roadways may still have snow or ice even when temperatures are slightly above freezing.
Step-by-step explanation:
In wet weather, with temperatures near freezing point, the bridge roadway and highway roadway may be affected in different ways.
The bridge roadway, being exposed to the air from both sides, experiences a quicker temperature change compared to the highway roadway, which is insulated by the ground. This temperature change can cause the bridge roadway to freeze and become slippery, making it dangerous for vehicles to drive on.
The highway roadway, on the other hand, may still have snow or ice on its surface even when the daytime temperatures are slightly above freezing. This is because the ground temperature takes longer to change, and the heat from the sun may not be enough to melt the snow or ice.