why, during a snow or other wintery weather, do overpasses and bridges freeze up and become slippery first

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why, during a snow or other wintery weather, do overpasses and bridges freeze up and become slippery first

In: Chemistry

5 Answers

Anonymous 0 Comments

Because air flow from both the top and bottom allows heat to dissipate faster than a normal road surface. A couple feet underground (varies depending on your location and time of year) the ground remains a constant ~55°.

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