It's bridged at university! (3)

I believe the answer is:

cam

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'university' is the definition.
The answer and definition can be both man-made objects as well as being singular nouns.
Maybe they are linked in a way I don't understand?

I don't understand how the rest of the clue works.

Can you help me to learn more?

(Other definitions for cam that I've seen before include "Rotating part in machine; river" , "Projection on rotating cylinder" , "academic stream" , "Cambridge river" , "Tributary of the Ouse" .)

I've seen this clue in the Evening Standard.

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