Infrastructure is typically built to provide essential public work services that are necessary for society. This may include infrastructure for the telecommunications sector or for the energy sector, in the form of telephone lines or electrical grids and dams for electric power generation, respectively. Among the top five most valued telecom infrastructure companies in the world are Chinese company, Huawei and American multinational, Cisco. Other value companies include Ericsson, Qualcomm, and Nokia. In the U.S, the power sector generates by far the highest value for new private infrastructure construction.
Infrastructure such as roads, streets, bridges, airports, railways, ports, tunnels, highways, or inland water ways are also newly built and updated in order to provide transportation services. Between 2017 and 2018, projects for rail transit were the highest valued projects for transportation infrastructure. They were closely followed by infrastructure projects for energy generation. In 2018, Singapore was ranked number one in road quality worldwide and was also ranked first for highest quality in air traffic. The cities with the longest metro networks in the world include: Shanghai, Beijing, London, Seoul, Tokyo and New York City.
In the U.S., the problem of Washington lawmakers not being able to easily find common ground, given the deep partisan division among them, has put most of the nation's infrastructure in critical need of repairs. It is hoped that the current Trump administration will be increase his administration’s dedication to improving American infrastructure.