Leading Swede and harsh critic of The Bridge (7)

I believe the answer is:

spanner

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'bridge' is the definition.
(something which spans two points)

I can't explain the rest of the clue.

(Other definitions for spanner that I've seen before include "that might cause difficulty in the works" , "Hand tool to grip and turn" , "Nut tightener" , "Bad thing to have in the works!" , "Tool for tightening or loosening" .)

I've seen this clue in the Sydney Morning Herald.

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