No through road that's shut (5)
I believe the answer is:
close
I believe this clue is a double definition.
'no through road' is the first definition.
(a close is not a through road)
'that's shut' is the second definition.
(synonyms)
(Other definitions for close that I've seen before include "cathedral precinct" , "cul-de-sac" , "Cathedral's precincts" , "Dense; nearby" , "Complete, a deal or case say" .)