Why do bridges freeze before road surfaces?

T.R.U.S.T.
Jan 21, 2024
1 min read

KFOR

by: James Wesser

Jan 21, 2024

(WHTM) – While driving, you may see signs that indicate that a bridge will freeze before a road does in winter weather conditions. But did you ever wonder why that is?

There are two reasons for this, according to How Stuff Works.

When the wind or cold air hits a road surface, it only loses heat at the surface. But when the same air hits a bridge, the cold air hits the top, bottom, and sides of the structure.

View the full article: KFOR.com

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