I think that the folks who deal who are involved with the infrastructure define it more broadly (link). Perhaps the people you speak of (I'm guessing politicians and reporters) don't know what they're talking about. It might also be a case of using a superclass word generically to refer to one of its subclasses.
I agree, Kalleh. Infrastructure is an engineering term, I believe--or at least, my brother, who is a civil engineer, subscribes to Infrastructure Magazine, so I'm just assuming it's part of their everyday jargon. I always thought of infrastructure as including roads, bridges, rail lines, airports, utility conduits and sewage treatment plants, but never considered that it would also include schools and recreation areas.
Wordmatic
Posts: 1390 | Location: Near Philadelphia, Pennsylvania, USA
Depends what it's the infrastructure of. Context is everything. "Infrastructure" just means the underlying things and systems that are needed to make something work. So the infrastructure of a city includes everything without which it can't function as a city, the infrastructure of an economy means everything without which it can't function as an economy etc.
How broadly or narrowly you interpret it depends on what things you think are necessary for such functioning.
"No man but a blockhead ever wrote except for money." Samuel Johnson.