There are hundreds of forms of infrastructure. These are the main ones that occur to me...
Traditional Physical Infrastructure
These are the common services commonly labeled as "infrastructure" in law and politics. They are either sponsored by the government or heavily regulated by it.
- Roads
- Railroads
- Public Transit
- Bridges and Tunnels (carrying roads and railroads)
- Power systems
- Water
- Sewer
- Ports and Canals
- Airports
- Government Buildings (prisons, courthouses, government offices)
Government Organizational Infrastructure
Services provided by the government that may involve physical structures but that are mostly organizational in nature.
- Monetary System
- Law and Regulation
- Law Enforcement
- Prisons
- Military / Defense
- Fire/Emergency Response
- Health Care Funding and Regulation
- Post Offices
- GPS
- Air Traffic Control
- Education
- Parks & Recreation
- Child Care
- Social Services
- Natural Disaster Response/Pandemic Response
Private Infrastructure
Services maintained primarily by private business interests, perhaps with some government regulation and funding. Almost every industry and organization has its own infrastructure system, which are too numerous to list here.
- Broadcast Media (entertainment, news)
- Data Systems (telephone, internet, cellphones, cable TV, etc.)
- Product Distribution
- Fuel Distribution
- Solid Waste Disposal
- Tourist Infrastructure