Street in present condition is a dead-end (6)
I believe the answer is:
stasis
'a dead-end' is the definition.
I can't judge whether this definition defines the answer.
'street in present condition' is the wordplay.
'street' becomes 'st' (abbreviation).
'in present condition' becomes 'as is' (I've seen this before).
'st'+'asis'='STASIS'
'is' acts as a link.
Can you help me to learn more?
(Other definitions for stasis that I've seen before include "Enduring state" , "Stoppage of blood flow in body" , "Assist in state of stagnation" , "Assist with stagnant condition" , "Assist (anag.)" .)