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Yes
Heavier loads, higher speeds would normally require deeper ballast depth below the sleepers.
Typically on the ECML in the UK ballast depth is approx 350mm not including any allowance for cant or crossfall. That would be for speeds up to 140mph and the highest axle loads.
Lightly used branch lines running Pacer / Sprinter type units would probably have 150mm of ballast.
An additional factor would be the amount of ballast shoulder provided.
For jointed track this would be approx 200mm from end of sleeper and level with sleeper tops.
For CWR on the straight the profile would be approx 450 from end of sleeper rising to approx 150mm above sleeper before falling back to just clear of the fastenings.
Shoulder wider on curves as additional protection against buckling in heat.
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