Bridges and overpasses tend to freeze before the rest of the road does.

What part of the roadways freeze first?

If roads are slick with snow and ice, chances are bridges and overpasses are worse. Bridges and overpasses are often the most dangerous roadways to travel on when temperatures drop because they freeze before surface roads.

What areas freeze first on cold icy days?

On cold, wet days shady spots can be icy. These areas freeze first and dry out last. Overpasses and other types of bridges can have icy spots. The pavement on bridges can be icy even when other pavement is not.