Why are there red doors in bridges?
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Why are there red doors in bridges?

Have you ever wondered why some bridges have little red doors in them?

They can be spotted in the walls of canal bridges and sometimes over rivers in the West Midlands.

We went to Kings Norton in Birmingham for a demonstration on why they are there.

This video was inspired by a question from a BBC News reader. Send us your questions about the West Midlands via the website here.