State means to create a fast road (10)
I believe the answer is:
expressway
'a fast road' is the definition.
(expressway is a type of road)
'state means' is the wordplay.
'state' becomes 'express' (synonyms).
'means' becomes 'way' (synonyms).
'express'+'way'='EXPRESSWAY'
'to create' acts as a link.
(Other definitions for expressway that I've seen before include "Urban motorway (US)" , "It's driven on by Americans" , "US name for motorway" , "means to get round America" , "Road" .)