Seventeen Street.

[tectak]

Hello Stevie,
Your use of language is refreshing. There may well be interpretation issues but that is acceptable because you indicate such fluency. Any crit of this will be arguable and opinionated except in non negotiable areas like grammar...when the crits may disagree Here goes.

The lad who was presumed wasted
faces his reflection in the filth grey floor; Hyphenating of words is as often as not undesirable except when desirable! "filth-grey" may so benefit.
On a wintry old devil of a decadent street, No capital after semicolon. In the group( colon, semi colon, comma, full stop) only the full stop ends a sentence.
that lusted at night, shining in neon thrall. Great stuff...full of flavour. Rich gruel. What's not to like...except maybe that coma after "street"

The grinning gutter greets with a knowing wink, ...overseasoned here. Just a tad too alliterative...reeks of contrivance
as an array of garbage filled gaps,
scream out loud from their concrete teeth,
while tired exhausts cough, and somehow sneer "somehow" is weak and weak compared to your own standards. The rest is verging on list-like because you are overusing the running link words...as,while, and. Just a little more work on this stanza would turn it round. Your poem

Ant like, he is hunched by his heavy load;
A long time carried ragbag worth nothing;
A slap started cancer of cold sharp despair;
An iron forged accumulation of self loathing. Though strong it is becoming wordy...you are diluting clarity with verbosity and the capitals on line starts emphasise the issue.

Later in his safe but lonely haven,
he dreams of moon streams and Irish mist,
of balconies with smiling rooftops singing,
and an old attic composed of a first furtive kiss. Has beauty...what else is needed?