Its things that help the econmy function[roads, brigdes, waterways, pipes, etc
Infrastructure is correct.
The prefix to "infrastructure" is "infrA-".
Public infrastructure is infrastructure that is owned by the public or is for public use. It is generally distinguishable from private or generic infrastructure in terms of policy, financing, purpose.
Transport Infrastructure is Guidance to Support Asset Management, Financial Management and Reporting.
Infrastructures is the plural of infrastructure
The plural of infrastructure is infrastructures. As in "infrastructures are important".
IRB Infrastructure was created in 1938.
JSW Infrastructure was created in 2006.
Infrastructure Canada was created in 2002.
Reliance Infrastructure's population is 2,011.
Reliance Infrastructure was created in 2002.
Reliance Infrastructure's population is 8,988.