This is a list of world's most expensive transport infrastructure. The figures below represent the estimated cost to build these objects, not taking into account inflation. It is for the sole purpose of identifying expensive transport infrastructure and the respective economic costs involved in building them. In order to limit the size and scope of this list infrastructure which cost less than $1 billion are not listed.

Object	Description	Location	Total cost (in USD)	Year of completion	Image
Interstate Highway System Interstate Highway System The Dwight D. Eisenhower National System of Interstate and Defense Highways, , is a network of limited-access roads including freeways, highways, and expressways forming part of the National Highway System of the United States of America...	network of limited-access roadways	United States	114 billion	1992
California High-Speed Rail California high-speed rail The California High-Speed Rail project is a planned future high-speed rail system in the state of California and headed by the California High-Speed Rail Authority . Initial funding for the project was approved by California voters on November 4, 2008, with the passage of Proposition 1A... : Phase I		Los Angeles (Anaheim) to San Francisco, United States	43-65 billion	2020: Projected
Crossrail Crossrail Crossrail is a project to build a major new railway link under central London. The name refers to the first of two routes which are the responsibility of Crossrail Ltd. It is based on an entirely new east-west tunnel with a central section from to Liverpool Street station... (under construction)	Commuter railway	Southeast England	~25.8 billion (GBP15.9bn)	2018 (expected)
"Big Dig" Central Artery/Tunnel Project	Road tunnel	Boston Boston Boston is the capital of and largest city in Massachusetts, and is one of the oldest cities in the United States. The largest city in New England, Boston is regarded as the unofficial "Capital of New England" for its economic and cultural impact on the entire New England region. The city proper had... , USA	22 billion	2007
Hong Kong International Airport Hong Kong International Airport Hong Kong International Airport is the main airport in Hong Kong. It is colloquially known as Chek Lap Kok Airport , being built on the island of Chek Lap Kok by land reclamation, and also to distinguish it from its predecessor, the closed Kai Tak Airport.The airport opened for commercial...	Airport Airport An airport is a location where aircraft such as fixed-wing aircraft, helicopters, and blimps take off and land. Aircraft may be stored or maintained at an airport...	Hong Kong Hong Kong Hong Kong is one of two Special Administrative Regions of the People's Republic of China , the other being Macau. A city-state situated on China's south coast and enclosed by the Pearl River Delta and South China Sea, it is renowned for its expansive skyline and deep natural harbour...	20 billion	1998
Second Avenue Subway Second Avenue Subway The Second Avenue Subway is a planned rapid transit subway line, part of the New York City Subway system. Phase I, consisting of two miles of tunnel and three stations, is currently under construction underneath Second Avenue in the borough of Manhattan.A plan for more than 75 years, the Second... (under construction)	Rapid transit Rapid transit A rapid transit, underground, subway, elevated railway, metro or metropolitan railway system is an electric passenger railway in an urban area with a high capacity and frequency, and grade separation from other traffic. Rapid transit systems are typically located either in underground tunnels or on...  line	New York City New York City New York is the most populous city in the United States and the center of the New York Metropolitan Area, one of the most populous metropolitan areas in the world. New York exerts a significant impact upon global commerce, finance, media, art, fashion, research, technology, education, and... , USA	17 billion	2016 (expected)
Channel Tunnel Channel Tunnel The Channel Tunnel is a undersea rail tunnel linking Folkestone, Kent in the United Kingdom with Coquelles, Pas-de-Calais near Calais in northern France beneath the English Channel at the Strait of Dover. At its lowest point, it is deep...	Subsea railway tunnel	Strait of Dover Strait of Dover The Strait of Dover or Dover Strait is the strait at the narrowest part of the English Channel. The shortest distance across the strait is from the South Foreland, 6 kilometres northeast of Dover in the county of Kent, England, to Cap Gris Nez, a cape near to Calais in the French of... , England & France	~15.4 billion (GBP9.5bn)	1994
Al Maktoum International Airport	Airport Airport An airport is a location where aircraft such as fixed-wing aircraft, helicopters, and blimps take off and land. Aircraft may be stored or maintained at an airport...	Jebel Ali Jebel Ali Jebel Ali is a port town, located 35 kilometres southwest of the city of Dubai in the United Arab Emirates . The village has a thriving expatriate community with over 300 residents. The area is also home to "5,500 companies from 120 countries".... , United Arab Emirates	10 billion	2010-22
Thameslink Programme Thameslink Programme The Thameslink Programme, originally Thameslink 2000, is a £6 billion project in south-east England to upgrade and expand the Thameslink rail network to provide new and longer trains between a wider range of stations to the north and to the south of London without requiring passengers to change... (under construction)	Commuter rail upgrade	Southeast England	~8.9-9.7 billion (GBP5.5-6.0bn)	2018 (expected)
Gotthard Base Tunnel Gotthard Base Tunnel The Gotthard Base Tunnel is a new railway tunnel beneath the Swiss Alps, expected to open in 2016. With a route length of and a total of of tunnels, shafts and passages, it is the world's longest rail tunnel, surpassing the Japanese Seikan Tunnel.... (under construction)	Railway tunnel	Swiss Alps Swiss Alps The Swiss Alps are the portion of the Alps mountain range that lies within Switzerland. Because of their central position within the entire Alpine range, they are also known as the Central Alps.... , Switzerland	9 billion (CHF Swiss franc The franc is the currency and legal tender of Switzerland and Liechtenstein; it is also legal tender in the Italian exclave Campione d'Italia. Although not formally legal tender in the German exclave Büsingen , it is in wide daily use there...  9.74 billion)	2017 (expected)
Barcelona Metro line 9 Barcelona Metro line 9 Line 9 is a line of the Barcelona Metro network that is currently under construction, with five stations open in the Santa Coloma de Gramenet suburb since December 2009... (under construction)	Rapid transit Rapid transit A rapid transit, underground, subway, elevated railway, metro or metropolitan railway system is an electric passenger railway in an urban area with a high capacity and frequency, and grade separation from other traffic. Rapid transit systems are typically located either in underground tunnels or on...  line	Barcelona Barcelona Barcelona is the second largest city in Spain after Madrid, and the capital of Catalonia, with a population of 1,621,537 within its administrative limits on a land area of... , Spain	8.9 billion	2014 (expected)
Guangzhou-Shenzhen-Hong Kong Express Rail Link Hong Kong Section (under construction)	High-speed rail High-speed rail High-speed rail is a type of passenger rail transport that operates significantly faster than the normal speed of rail traffic. Specific definitions by the European Union include for upgraded track and or faster for new track, whilst in the United States, the U.S...	Hong Kong Hong Kong Hong Kong is one of two Special Administrative Regions of the People's Republic of China , the other being Macau. A city-state situated on China's south coast and enclosed by the Pearl River Delta and South China Sea, it is renowned for its expansive skyline and deep natural harbour...	8.6 billion	2016 (expected)
Strait of Messina Bridge Strait of Messina Bridge The Strait of Messina Bridge is a long-planned suspension bridge across the Strait of Messina, a narrow section of water between the eastern tip of Sicily and the southern tip of mainland Italy. In 2006, under Prime Minister Romano Prodi the project was cancelled... (under construction)	Road/rail bridge	Sicily Sicily Sicily is a region of Italy, and is the largest island in the Mediterranean Sea. Along with the surrounding minor islands, it constitutes an autonomous region of Italy, the Regione Autonoma Siciliana Sicily has a rich and unique culture, especially with regard to the arts, music, literature,... , Italy	~8.6 billion (€6.1bn)	2016
High Speed 1	High-speed rail High-speed rail High-speed rail is a type of passenger rail transport that operates significantly faster than the normal speed of rail traffic. Specific definitions by the European Union include for upgraded track and or faster for new track, whilst in the United States, the U.S...	Southeast England	~8.4 billion (GBP5.2bn)	2007
Eglinton–Scarborough Crosstown line	Rapid transit Rapid transit A rapid transit, underground, subway, elevated railway, metro or metropolitan railway system is an electric passenger railway in an urban area with a high capacity and frequency, and grade separation from other traffic. Rapid transit systems are typically located either in underground tunnels or on...  line	Toronto Toronto Toronto is the provincial capital of Ontario and the largest city in Canada. It is located in Southern Ontario on the northwestern shore of Lake Ontario. A relatively modern city, Toronto's history dates back to the late-18th century, when its land was first purchased by the British monarchy from... , Canada	~8.4 billion (CAD8.2bn)	2020 (expected)
London Heathrow Terminal 5	Airport terminal Airport terminal An airport terminal is a building at an airport where passengers transfer between ground transportation and the facilities that allow them to board and disembark from aircraft....	London London London is the capital city of :England and the :United Kingdom, the largest metropolitan area in the United Kingdom, and the largest urban zone in the European Union by most measures. Located on the River Thames, London has been a major settlement for two millennia, its history going back to its... , England	~7 billion (GBP4.3bn)	2008
Abu Dhabi International Airport Abu Dhabi International Airport Abu Dhabi International Airport is an airport in Abu Dhabi, the capital of the United Arab Emirates. The airport is one of the fastest growing airports in the world in terms of passengers , new airline operators, and infrastructural development...	Airport Airport An airport is a location where aircraft such as fixed-wing aircraft, helicopters, and blimps take off and land. Aircraft may be stored or maintained at an airport...  expansion	United Arab Emirates United Arab Emirates The United Arab Emirates, abbreviated as the UAE, or shortened to "the Emirates", is a state situated in the southeast of the Arabian Peninsula in Western Asia on the Persian Gulf, bordering Oman, and Saudi Arabia, and sharing sea borders with Iraq, Kuwait, Bahrain, Qatar, and Iran.The UAE is a...	6.8 billion	2012
Øresund Bridge	Rail/road bridge/tunnel	Denmark Denmark Denmark is a Scandinavian country in Northern Europe. The countries of Denmark and Greenland, as well as the Faroe Islands, constitute the Kingdom of Denmark . It is the southernmost of the Nordic countries, southwest of Sweden and south of Norway, and bordered to the south by Germany. Denmark... -Sweden Sweden Sweden , officially the Kingdom of Sweden , is a Nordic country on the Scandinavian Peninsula in Northern Europe. Sweden borders with Norway and Finland and is connected to Denmark by a bridge-tunnel across the Öresund....	~5.7 billion (DKK30.1bn)	2000
New Doha International Airport New Doha International Airport New Doha International Airport is an international airport currently under construction in Doha, capital of Qatar. NDIA was slated to replace the old Doha International Airport as Qatar's only international airport in 2009. Current estimates have a completion date of 2011/2012... (under construction)	Airport Airport An airport is a location where aircraft such as fixed-wing aircraft, helicopters, and blimps take off and land. Aircraft may be stored or maintained at an airport...	Qatar Qatar Qatar , also known as the State of Qatar or locally Dawlat Qaṭar, is a sovereign Arab state, located in the Middle East, occupying the small Qatar Peninsula on the northeasterly coast of the much larger Arabian Peninsula. Its sole land border is with Saudi Arabia to the south, with the rest of its...	5.5 billion	2012-15
Akashi-Kaikyō Bridge	Road bridge	Kobe Kobe , pronounced , is the fifth-largest city in Japan and is the capital city of Hyōgo Prefecture on the southern side of the main island of Honshū, approximately west of Osaka... , Japan	5 billion	1998
Noord/Zuidlijn	Rapid transit Rapid transit A rapid transit, underground, subway, elevated railway, metro or metropolitan railway system is an electric passenger railway in an urban area with a high capacity and frequency, and grade separation from other traffic. Rapid transit systems are typically located either in underground tunnels or on...  line	Amsterdam Amsterdam Amsterdam is the largest city and the capital of the Netherlands. The current position of Amsterdam as capital city of the Kingdom of the Netherlands is governed by the constitution of August 24, 1815 and its successors. Amsterdam has a population of 783,364 within city limits, an urban population... , Netherlands	~4.4 billion (€3.1bn)	2017 (expected)
Sheppard line extensions	Rapid transit Rapid transit A rapid transit, underground, subway, elevated railway, metro or metropolitan railway system is an electric passenger railway in an urban area with a high capacity and frequency, and grade separation from other traffic. Rapid transit systems are typically located either in underground tunnels or on...  line	Toronto Toronto Toronto is the provincial capital of Ontario and the largest city in Canada. It is located in Southern Ontario on the northwestern shore of Lake Ontario. A relatively modern city, Toronto's history dates back to the late-18th century, when its land was first purchased by the British monarchy from... , Canada	~4.3 billion (CAD4.2bn)	2019 (expected)
Kuala Lumpur International Airport Kuala Lumpur International Airport Kuala Lumpur International Airport , or KLIA serves the capital city of Malaysia, Kuala Lumpur, and is one of Southeast Asia's largest airports. It is also Malaysia's main international airport. It is situated in the Sepang district, in the south of the state of Selangor, about from Kuala Lumpur...	Airport Airport An airport is a location where aircraft such as fixed-wing aircraft, helicopters, and blimps take off and land. Aircraft may be stored or maintained at an airport...	Malaysia	3.5 billion	1998
Clem Jones Tunnel	Road tunnel	Brisbane Brisbane Brisbane is the capital and most populous city in the Australian state of Queensland and the third most populous city in Australia. Brisbane's metropolitan area has a population of over 2 million, and the South East Queensland urban conurbation, centred around Brisbane, encompasses a population of... , Australia	~3.4 billion (AUD3.2bn)	2010
Vasco da Gama Bridge	Road bridge Bridge A bridge is a structure built to span physical obstacles such as a body of water, valley, or road, for the purpose of providing passage over the obstacle...	Lisbon Lisbon Lisbon is the capital city and largest city of Portugal with a population of 545,245 within its administrative limits on a land area of . The urban area of Lisbon extends beyond the administrative city limits with a population of 3 million on an area of , making it the 9th most populous urban... , Portugal	~1.3 billion (€897m)	1998