An airway is: a control area or portion thereof established in the form of a corridor. (ICAO Annex 11)
And Control area
A control area (CTA) is an aviation term that describes a volume of controlled airspace
And to really tie it down
Controlled Airspace is defined as airspace of defined dimensions within which air traffic control service is provided to IFR flights and to VFR flights in accordance with the airspace classification.
So by ICAO definition, what you describe are not Airways, here they might be called Advisory routes, though I suppose a better name for yours would be "Compulsory Instrument Routings"