Heightened way deliveries come up to scratch (8)
I believe the answer is:
overpass
'heightened way' is the definition.
(an overpass is a raised road or way)
'deliveries come up to scratch' is the wordplay.
'deliveries' becomes 'over' (I've seen this before).
'come up to scratch' becomes 'pass' (both can mean to meet an acceptable standard).
'over'+'pass'='OVERPASS'
(Other definitions for overpass that I've seen before include "Flyover" , "high road" , "High-level road" , "bridge" .)