Cross section of lengthy bridge (6)

I believe the answer is:

hybrid

'cross' is the definition.
(I've seen this before)

'section of lengthy bridge' is the wordplay.
'section of' indicates a hidden word.
'HYBRID' is hidden within 'lengthy bridge'.

(Other definitions for hybrid that I've seen before include "Cross breed" , "Mongrel - cross" , "Crossbreed or mixture" , "Of mixed ancestry" , "Crossed offspring" .)

I've seen this clue in The Guardian and The Telegraph.

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