# Why do bridges freeze before the rest of the road?

**URL:** <https://boards.straightdope.com/t/why-do-bridges-freeze-before-the-rest-of-the-road/96909>\
**Category:** Factual Questions\
**Created:** [December 4, 2001, 10:20pm UTC](https://boards.straightdope.com/t/why-do-bridges-freeze-before-the-rest-of-the-road/96909 "2001-12-04T22:20:41Z")\
**Posts on this page:** 1\
**Showing post:** 5

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**Author:** ![Philster](https://avatars.discourse-cdn.com/v4/letter/p/13edae/32.png) [@Philster](https://boards.straightdope.com/u/Philster)\
**Post date:** [December 4, 2001, 10:39pm UTC](https://boards.straightdope.com/t/why-do-bridges-freeze-before-the-rest-of-the-road/96909/5 "2001-12-04T22:39:04Z")

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Because the bridge does not benefit from any geothermal heating…in addition to the air circulating above and around it.

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