Crossroads into centre is under reconstruction (12)
I believe the answer is:
intersection
'crossroads' is the definition.
'into centre is under reconstruction' is the wordplay.
'under reconstruction' indicates anagramming the letters.
'into'+'centre'+'is'='intocentreis'
'intocentreis' is an anagram of 'INTERSECTION'.
(Other definitions for intersection that I've seen before include "Motorway junction" , "Crossing point" , "Where two lines cross" , "Crossing - junction" .)