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Infrastructure is the fundamental facilities and systems serving a country, city, or other area,. Infrastructure | Define Infrastructure at Dictionary.com including the services and facilities necessary for its to function.

(2018). 9780130630858, Pearson Prentice Hall.
Infrastructure is composed of public and private physical improvements such as , , , , , , telecommunications (including and ). In general, it has also been defined as "the physical components of interrelated systems providing and services essential to enable, sustain, or enhance societal living conditions." There are two general types of ways to view infrastructure, hard or soft. Hard infrastructure refers to the physical networks necessary for the functioning of a modern industry. This includes roads, bridges, railways, etc. Soft infrastructure refers to all the institutions that maintain the , health, social, and cultural standards of a country.This includes educational programs, parks and recreational facilities, law enforcement agencies, and emergency services.

The word infrastructure has been used in English since 1887 and in French since 1875, originally meaning "The installations that form the basis for any operation or system".Online Etymology Dictionary. Douglas Harper, Historian. http://dictionary.reference.com/browse/infrastructure (accessed: April 24, 2008) The word was imported from , where it means , the native material underneath a constructed pavement or railway. The word is a combination of the prefix "infra", meaning "below" and many of these constructions are underground, for example, tunnels, water and gas systems, and . The army use of the term achieved currency in the United States after the formation of in the 1940s, and by 1970 was adopted by in its modern civilian sense.Stephen Lewis The Ecology of Infrastructure and the Infrastructure of the Internet, blog Hag Pak Sak, posted September 22, 2008.


Classifications
A 1987 US National Research Council panel adopted the term "public works infrastructure", referring to:
"... both specific functional modes – highways, streets, roads, and bridges; mass transit; airports and airways; water supply and water resources; wastewater management; solid-waste treatment and disposal; electric power generation and transmission; telecommunications; and hazardous waste management – and the combined system these modal elements comprise. A comprehension of infrastructure spans not only these public works facilities, but also the operating procedures, management practices, and development policies that interact together with societal demand and the physical world to facilitate the transport of people and goods, provision of water for drinking and a variety of other uses, safe disposal of society's waste products, provision of energy where it is needed, and transmission of information within and between communities." Infrastructure for the 21st Century, Washington, D.C.: National Academy Press, 1987.

The OECD also classifies communications as a part of infrastructure. OECD Economic Infrastructure. Common Reporting Standard (CRS) Codes 2 pages, n.d.

The American Society of Civil Engineers publish a "Infrastructure Report Card" which represents the organizations opinion on the condition of various infrastructure every 2–4 years. 2017 Infrastructure Report, 112pp, American Society of Civil Engineers, 2017 they grade 16 categories, namely Aviation, Bridges, Dams, Drinking Water, Energy, Hazardous Waste, Inland Waterways, Levees, Parks & Recreation, Ports, Rail, Roads, Schools, Solid Waste, Transit and Wastewater.


Personal
A way to embody personal infrastructure is to think of it in term of human capital. is defined by the Encyclopedia Britannica as “intangible collective resources possessed by individuals and groups within a given population." The goal of personal infrastructure is to determine the quality of the economic agents’ values. This results in three major tasks: the task of economic proxies’ in the economic process (teachers, unskilled and qualified labor, etc.); the importance of personal infrastructure for an individual (short and long-term consumption of education); and the social relevance of personal infrastructure.


Institutional
           Institutional infrastructure branches from the term “economic constitution.” According to Gianpiero Torrisi, Institutional infrastructure is the object of economic and legal policy. It compromises the grown and sets norms. It refers to the degree of actual equal treatment of equal economic data and determines the framework within which economic agents may formulate their own economic plans and carry them out in co-operation with others.


Material
           Material infrastructure is defined as “those immobile, non-circulating capital goods that essentially contribute to the production of infrastructure goods and services needed to satisfy basic physical and social requirements of economic agents." There are two distinct qualities of material infrastructures: 1) Fulfillment of social needs and 2) Mass production. The first characteristic deals with the basic needs of human life. The second characteristic is the non-availability of infrastructure goods and services.


Economic
           According to the business dictionary, economic infrastructure can be defined as “internal facilities of a country that make business activity possible, such as communication, transportation and distribution networks, financial institutions and markets, and energy supply systems.” Economic infrastructure support productive activities and events. This includes roads, highways, bridges, airports, water distribution networks, sewer systems, irrigation plants, etc.


Social
          Social infrastructure can be broadly defined as the construction and maintenance of facilities that support social services. Social infrastructures are created to increase social comfort and act on economic activity. These being schools, parks and playgrounds, structures for public safety, waste disposal plants, hospitals, sports area, etc.


Core
           Core assets provide essential services and have monopolistic characteristics. Investors seeking core infrastructure look for five different characteristics: Income, Low volatility of returns, Diversification, Inflation Protection, and Long-term liability matching. Core Infrastructure incorporates all the main types of infrastructure. For instance; roads, highways, railways, public transportation, water and gas supply, etc.


Basic
           Basic infrastructure refers to main railways, roads, canals, harbors and docks, the electromagnetic telegraph, drainage, dikes, and land reclamation. It consist of the more well-known features of infrastructure. The things in the world we come across everyday (buildings, roads, docks, etc).


Complementary
           Complementary infrastructure refers to things like light railways, tramways, gas/electricity/water supply, etc. To complement something, means to bring to perfection or complete it. So, complementary infrastructure deals with the little parts of the engineering world the brings more life. The lights on the sidewalks, the landscaping around buildings, the benches for pedestrians to rest, etc.


Related concepts
The term infrastructure may be confused with the following overlapping or related concepts.

and are general terms that in some contexts may include infrastructure, but in the context of a discussion of infrastructure would refer only to smaller scale systems or works that are not included in infrastructure, because they are typically limited to a single , and are owned and operated by the land owner. For example, an irrigation canal that serves a region or district would be included with infrastructure, but the private irrigation systems on individual land parcels would be considered land improvements, not infrastructure. Service connections to municipal service and public utility networks would also be considered land improvements, not infrastructure. Land improvement, Online BusinessDictionary.com, http://www.businessdictionary.com/definition/land-development.html (accessed January 31, 2009) Land development, Online BusinessDictionary.com, http://www.businessdictionary.com/definition/land-development.html (accessed January 31, 2009)

The term includes government-owned and operated infrastructure as well as public buildings, such as schools and court houses. Public works generally refers to physical assets needed to deliver . Public services include both infrastructure and services generally provided by government.


Ownership and financing
Infrastructure may be owned and managed by or by private companies, such as sole or companies. Generally, most roads, major airports and other ports, water distribution systems, and sewage networks are publicly owned, whereas most energy and telecommunications networks are privately owned. Publicly owned infrastructure may be paid for from taxes, tolls, or metered user fees, whereas private infrastructure is generally paid for by metered user fees. Major investment projects are generally financed by the issuance of long-term bonds.

Government-owned and operated infrastructure may be developed and operated in the or in public-private partnerships, in addition to in the . in the United States for example, public spending on infrastructure has varied between 2.3% and 3.6% of GDP since 1950.The New York Times, "Money for Public Projects", November 19, 2008 (accessed January 26, 2009) Many financial institutions invest in infrastructure.


Types

Engineering and construction
generally limit the term "infrastructure" to describe that are in the form of a large network; in other words, hard infrastructure. Efforts to devise more generic definitions of infrastructures have typically referred to the network aspects of most of the structures, and to the accumulated value of investments in the networks as assets. One such definition from 1998 defined infrastructure as the network of assets "where the system as a whole is intended to be maintained indefinitely at a specified standard of service by the continuing replacement and refurbishment of its components".Association of Local Government Engineers New Zealand: "Infrastructure Asset Management Manual", June 1998. Edition 1.1


Civil defense and economic development
planners and developmental economists generally refer to both hard and soft infrastructure, including such as and , emergency services such as police and fire fighting, and basic financial services. The notion of infrastructure-based development combining long-term infrastructure investments by government agencies at central and regional levels with public private partnerships has proven popular among economists in Asia (notably and ), mainland Europe, and Latin America.


Military
infrastructure is the buildings and permanent installations necessary for the support of military forces, whether they are stationed in bases, being deployed or engaged in operations. For example, barracks, headquarters, airfields, communications facilities, stores of military equipment, port installations, and maintenance stations.D.O.D. Dictionary of Military and Associated Terms, 2001 (rev. 2005)


Green
Green infrastructure (or blue-green infrastructure) highlights the importance of the natural environment in decisions about land use planning.The Conservation Fund, Arlington, VA. "Green Infrastructure". Accessed 2009-10-06.Maryland Department of Natural Resources, Annapolis, MD. Maryland's Green Infrastructure Assessment: A Comprehensive Strategy for Land Conservation and Restoration. May 2003. In particular there is an emphasis on the "life support" functions provided by a network of natural , with an emphasis on interconnectivity to support long-term . Examples include clean and healthy soils, as well as the more functions such as and providing shade and shelter in and around towns and cities. The concept can be extended to apply to the management of runoff at the local level through the use of natural systems, or engineered systems that mimic natural systems, to treat polluted .U.S. Environmental Protection Agency (EPA), Washington, D.C., et al., Green Infrastructure Statement of Intent. 2007-04-19. EPA et al. "Managing Wet Weather with Green Infrastructure: Action Strategy 2008." January 2008.


Marxism
In , the term "infrastructure" is sometimes used as a synonym for "base" in the synthetic pair base and superstructure. However, the Marxist notion of "base" is broader than the non-Marxist use of the term "infrastructure", and some soft infrastructure, such as laws, governance, regulations, and standards, would be considered by Marxists to be part of the superstructure, not the base. Marx, Karl Heinrich (1818–1883), accessed January 9, 2011.


Communications
Communications infrastructure is the informal and formal channels of communication, and , or beliefs held by members of particular groups, as well as information technology, software development tools. Still underlying these more conceptual uses is the idea that infrastructure provides organizing structure and support for the system or organization it serves, whether it is a city, a nation, a corporation, or a collection of people with common interests. Examples include IT infrastructure, research infrastructure, terrorist infrastructure, employment infrastructure and tourism infrastructure.


In the developing world
According to researchers at the Overseas Development Institute, the lack of infrastructure in many developing countries represents one of the most significant limitations to and achievement of the Millennium Development Goals (MDGs). Infrastructure investments and maintenance can be very expensive, especially in such areas as landlocked, rural and sparsely populated countries in . It has been argued that infrastructure investments contributed to more than half of Africa's improved growth performance between 1990 and 2005, and increased investment is necessary to maintain growth and tackle . The returns to investment in infrastructure are very significant, with on average thirty to forty percent returns for telecommunications (ICT) investments, over forty percent for generation, and eighty percent for .Christian K.M. Kingombe 2011. Mapping the new infrastructure financing landscape. London: Overseas Development Institute


Regional differences
The demand for infrastructure, both by consumers and by companies is much higher than the amount invested. There are severe constraints on the supply side of the provision of infrastructure in Asia.Peter McCawley (2010), ' Infrastructure Policy in Developing countries', Asian-Pacific Economic Literature, 24(1), May. See also Asian-Pacific Economic Literature Policy Brief No 19, May 2010, on ' Infrastructure policy in developing countries in Asia'. The infrastructure financing gap between what is invested in (around US$48 billion) and what is needed (US$228 billion) is around US$180 billion every year.

In , three percent of (around US$71 billion) would need to be invested in infrastructure in order to satisfy demand, yet in 2005, for example, only around two percent was invested leaving a financing gap of approximately US$24 billion.

In Africa, in order to reach the seven percent annual growth calculated to be required to meet the MDGs by 2015 would require infrastructure investments of about fifteen percent of GDP, or around US$93 billion a year. In , over thirty-seven percent of GDP would be required.


Sources of funding
The source of financing varies significantly across sectors. Some sectors are dominated by government spending, others by , and yet others by private investors. In California, infrastructure financing districts are established by local governments to pay for physical facilities and services within a specified area by using property tax increases.
(2018). 9781938166112, Solano Press.
In order to facilitate investment of the private sector in developing countries' infrastructure markets, it is necessary to design risk-allocation mechanisms more carefully, given the higher risks of their markets.Koh, Jae Myong (2018) Green Infrastructure Financing: Institutional Investors, PPPs and Bankable Projects, Palgrave Macmillan.

In Sub-Saharan Africa, governments spend around US$9.4 billion out of a total of US$24.9 billion. In , governments represent almost all spending. In and a majority of investment is government spending. In ICT and and , the private sector represents the majority of capital expenditure. Overall, between them aid, the private sector, and non- financiers exceed government spending. The private sector spending alone equals state capital expenditure, though the majority is focused on ICT infrastructure investments. External financing increased in the 2000s (decade) and in Africa alone external infrastructure investments increased from US$7 billion in 2002 to US$27 billion in 2009. , in particular, has emerged as an important investor.


See also
  • Airport infrastructure
  • Asset Management Plan
  • Green infrastructure
  • Infrastructure as a service
  • Infrastructure asset management
  • Infrastructure security
  • Pseudo-urbanization
  • Sustainable architecture
  • Sustainable engineering


Bibliography
  • Koh, Jae Myong (2018) Green Infrastructure Financing: Institutional Investors, PPPs and Bankable Projects, London: Palgrave Macmillan. .
  • Nurre, Sarah G. "Restoring infrastructure systems: An integrated network design and scheduling (INDS) problem." European Journal of Operational Research. (12/2012), 223 (3), pp. 794–806.

  • (2018). 9780143112709, Penguin Press.
  • Larry W. Beeferman, "Pension Fund Investment in Infrastructure: A Resource Paper", Capital Matter (Occasional Paper Series), No. 3 December 2008
  • A. Eberhard, "Infrastructure Regulation in Developing Countries", PPIAF Working Paper No. 4 (2007) World Bank
  • M. Nicolas J. Firzli and Vincent Bazi, "Infrastructure Investments in an Age of Austerity: The Pension and Sovereign Funds Perspective", published jointly in Revue Analyse Financière, Q4 2011 issue, pp. 34–37 and USAK/JTW July 30, 2011 (online edition)
  • (2018). 9780393329599, Norton.
  • (2018). 9781605296470, Rodale.
  • Georg Inderst, "Pension Fund Investment in Infrastructure", OECD Working Papers on Insurance and Private Pensions, No. 32 (2009)


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