# I saw this in Calvin and Hobbes once

**URL:** <https://boards.straightdope.com/t/i-saw-this-in-calvin-and-hobbes-once/166931>\
**Category:** Factual Questions\
**Created:** [April 6, 2003, 10:06pm UTC](https://boards.straightdope.com/t/i-saw-this-in-calvin-and-hobbes-once/166931 "2003-04-06T22:06:49Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![StanDup](https://avatars.discourse-cdn.com/v4/letter/s/e5b9ba/32.png) [@StanDup](https://boards.straightdope.com/u/StanDup)\
**Post date:** [April 6, 2003, 10:06pm UTC](https://boards.straightdope.com/t/i-saw-this-in-calvin-and-hobbes-once/166931/1 "2003-04-06T22:06:49Z")

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How do they know the load limit on bridges? (And please don’t tell me that they put heavier and heavier trucks on the bridge until it falls and build it back up again) This question has been plaguing me ever since I read it.