Road loco somehow used to get to US state (8)
I believe the answer is:
colorado
'to us state' is the definition.
(I've seen this before)
'road loco somehow' is the wordplay.
'somehow' is an anagram indicator.
'road'+'loco'='roadloco'
'roadloco' anagrammed gives 'COLORADO'.
'used to get' is the link.
(Other definitions for colorado that I've seen before include "US state in the Rocky Mountains" , "Beetle whose larvae destroy potato plants" , "State in the Rockies" , "American state, capital Denver" , "US state has a strangely cool road" .)