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

Map of railways in Sweden. Sources used: Boris Chomenko's drawing This other map Overview of important lines Overview of lines where 200 km/h is in use Locations of Swedish cities Source for the background image (slightly modified).

Railway · Sweden

SEK 30 billion

Ostlänken

2035

Approximately $4.43 billion

Stadium · Albania

€75 million

Air Albania Stadium

2019

Approximately $83.96 million

w:es:Paso de Agua Negra, en la Cordillera de los Andes, límite entre Argentina y Chile, en la provincia de San Juan.

Tunnel · Chile

$1.6 billion

Agua Negra Tunnel

Railway · United Kingdom

£3.8 million

Aldwych station renewal proposal

1994

Approximately $5.82 million

Railway · Guatemala

$220 million

AeroMetro

2027

Interchange of BC Highway 4 and Inland Island Highway 19 at Qualicum Beach, BC

Road or highway · Canada

CAD 175 million

Inland Island Highway Parksville–Mud Bay section

1996

Approximately $128.34 million

D3 Highway near Soběslav, South Bohemian Region, CZ

Road or highway · Czech Republic

CZK 14.5 billion

D3 motorway

2024

Approximately $624.55 million

Road or highway · Australia

AUD 4.2 million

Brand Highway

1975

Approximately $5.5 million

The 75-m (247-ft) St. Helens bridge on State Highway 504 after May 18 eruption of Mount St. Helens when it was washed out by the mudflow on the North Fork Toutle River. This steel structure was carried about half km (quarter mile) downstream and was partially buried by the mudflow. Man for scale by bridge girder.

Road or highway · United States

$118 million

Washington State Route 504

1997

Photograph taken from a series posted by AC Transit showing aerial photography of West Oakland, the Bay Bridge, and GM New Look buses. This photograph shows the Macarthur Maze (I-80/I-580 spaghetti interchange).

Road or highway · United States

$5.8671 million

MacArthur Maze I-580 connector rebuild

2007

Signage announcing future site of Purple Line (Los Angeles Metro) in Miracle Mile.

Railway · United States

$9.5 billion

D Line Extension

2026

Trump Place buildings loom over an elevated portion of West Side Highway which climbs in turn over Riverside Park South in afternoon sunlight. Replaced May 2009 for the article, by File:Trump Place street jeh.JPG

Road or highway · United States

$13.5 million

West Side Elevated Highway

1951

A282 (London Orbital) approaching the Dartford Crossing

Railway · United Kingdom

£520 million

West London Orbital

2032

Approximately $684.68 million

Stoney Trail - created with OpenStreetMap

Road or highway · Canada

CAD 4 billion

Stoney Trail

2023

Approximately $2.96 billion

Aerial view of a part of the Atlantic Ocean Road, taken at midnight sun.

Road or highway · Norway

NOK 122 million

Atlantic Ocean Road

1989

Approximately $17.67 million

The road to Garson Lake as seen looking east by the road bridge at the La Loche River.

Road or highway · Canada

CAD 45 million

Saskatchewan Highway 956

2005

Approximately $37.15 million

Bei meinem Besuch in Jeddah am 16.08.2019 aufgenommen

Skyscraper · Saudi Arabia

SAR 7.2 billion

Jeddah Tower

2028

Approximately $1.92 billion

Highway 11 Regina Bypass, Saskatchewan, Canada

Road or highway · Canada

CAD 1.88 billion

Regina Bypass

2015

Approximately $1.47 billion

Road or highway · Australia

AUD 407 million

Southern Expressway

2011

Approximately $419.82 million

Road or highway · Switzerland

CHF 5.135 billion

A9 Sierre East–Visp East completion

2037

Approximately $5.83 billion

A picture of the metro works at Kolonaki Square

Railway · Greece

€1.2 billion

Athens Metro Line 4

2032

Approximately $1.42 billion

Road or highway · Italy

ITL 243 billion

Autostrada A22

1974

Approximately $373.65 million

Skyscraper · United Kingdom

£22.7 million

ArcelorMittal Orbit

2012

Approximately $35.86 million

A ATLAS V rocket carrying the Kuiper 3 mission successfully launches from Space Launch Complex 41 at Cape Canaveral Space Force Station, Florida, on September 25, 2025. Project Kuiper is Amazon's low Earth orbit satellite broadband network. Its mission is to provide fast, reliable internet to customers around the world, including those in unserved and underserved communities, using a constellation of more than 3,200 LEO satellites. (U.S. Space Force photo by Gwendolyn Kurzen)

Space mission · United States

$10 billion

Amazon Leo

2025