BudgetGuessr project library

What the world’s biggest projects really cost

Compare published costs, timelines, project scale and original sources behind remarkable infrastructure and space missions.

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1733 projects

Road or highway · United Kingdom

£1.5 billion

A14 Cambridge–Huntingdon improvement scheme

2022

Approximately $1.85 billion

Port · Turkmenistan

$1.5 billion

Turkmenbashi international seaport

2018

A30 Chiverton to Carland Cross improvement works, showing new bridge near Zelah, Cornwall - July 2023

Road or highway · United Kingdom

£330 million

A30 Chiverton to Carland Cross improvement

2024

Approximately $421.77 million

Railway · United States

$649 million

OC Streetcar

2025

Railway · United Kingdom

£41.8 million

Beam Park railway station

Approximately $53.42 million

View of Matthews Avenue, tram tracks and Tullamarine Freeway looking north, Essendon Airport

Road or highway · Australia

AUD 14.94 million

Tullamarine Freeway

1970

Approximately $16.73 million

Aluminium metro coach manufactured by Titagarh Wagons

Railway · India

INR 114.2 billion

Pune Metro

2016

Approximately $1.7 billion

Skyscraper · Azerbaijan

$3 billion

Azerbaijan Tower

2012

Chantier au Puits Rû de Nesle pour la ligne 15 du métro de Paris, Noisy-le-Grand.

Railway · France

€16 billion

Paris Métro Line 15

2020

Approximately $20.56 billion

Overview of Highway 407 north of Toronto.

Road or highway · Canada

CAD 1.5 billion

Ontario Highway 407

1997

Approximately $1.08 billion

A sunrise on Highway 39 near North Portal, Saskatchewan

Road or highway · Canada

CAD 29 million

Saskatchewan Highway 39

2025

Approximately $20.74 million

Region of Waterloo's ION stop, Central Station Innovation District, with Google Kitchener offices at the Breithaupt Block in the background. The future site of the Kitchener Central Station inter-modal Train/Bus station along the North Mainline.

Railway · Canada

CAD 130 million

Kitchener Central

2023

Approximately $96.3 million

Railway · India

INR 20.696 billion

Pink Line

2010

Approximately $452.61 million

A1 road north of Peterborough, southbound, changing to motorway standard

Road or highway · United Kingdom

£35 million

A1 road: Haddington–Dunbar Expressway

2004

Approximately $64.08 million

The first of five train sets for Brightline is hauled by the Union Pacific Railroad through Manteca, California on the Fresno Subdivision in December 2016 on its way to Florida

Railway · United States

$5 billion

Brightline

2023

Yangshan Deep-water Harbour Zone, Port of Shanghai.

Port · People's Republic of China

CNY 44 billion

Yangshan Port

2017

Approximately $6.51 billion

View of A3 Entering the Hindhead Tunnel, looking north

Road or highway · United Kingdom

£370.9 million

A3 Hindhead improvement

2011

Approximately $579.84 million

1 Seaport, under construction on June 10, 2019.

Skyscraper · United States

$273 million

161 Maiden Lane

Aerial view of Dalian Jinzhouwan International Airport

Airport · People's Republic of China

CNY 50.931 billion

Dalian Jinzhouwan International Airport

2024

Approximately $7.08 billion

Aerial view of The Pentagon, Arlington, Virginia

Road or highway · United States

$48.5 million

Virginia State Route 27

2015

Van Ness Bus Rapid Transit red lanes north of Fell Street in March 2022, the day before the line opened

Railway · United States

$345.9 million

Van Ness Bus Rapid Transit

2022

Railway · India

INR 119.73 billion

Sivok railway station

2025

Approximately $1.37 billion

Kasteli Airport, Crete, Greece: View from the archaeological site of Lyctus.

Airport · Greece

€1.2 billion

Kastelli Airport

2025

Approximately $1.36 billion

I-74 Groundbreaking in Kernersville with Secretary Tata and Governor McCrory on November 14, 2014.

Road or highway · United States

$1.74 billion

Winston-Salem Northern Beltway

2026