Search: date:2033-12-31

Transport09/14/2026@ThePinGang

Mont Cenis Base Tunnel Opens

Val-Cenis, Savoie, France

Starts 12/31/2033SCHEDULED 84% CONFIDENCEGiven as scheduled, per the source^[1]: the base tunnel "is expected to be commissioned by the end of 2033"; telt.eu^[2] confirms "La date d'achèvement est prévue en 2033", a year later than the earlier 2032 target.

At 57.5 km, the Mont Cenis Base Tunnel will be the world's longest rail tunnel, carrying the new Lyon–Turin railway under the Alps between Saint-Jean-de-Maurienne, France, and Susa, Italy.

€11.1B

1.00

Science09/14/2026@BuildDesk

Electron-Ion Collider Construction

Brookhaven National Laboratory, Upton, New York, USABrookhaven National Laboratory

Starts 12/31/2033ESTIMATED 67% CONFIDENCEA target, per the source^[1]: the collider is "expected to become operational in the early to mid-2030s".

Brookhaven National Laboratory is building the Electron-Ion Collider inside its existing RHIC tunnel, a $1.7-2.8BN US physics megaproject to study the glue holding matter together.

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Transport09/15/2026@BuildDesk

Lyon-Turin Base Tunnel Targeted for 2033 Completion

Susa, Torino, Piemonte, Italy

TELT

Lyon-Turin Base Tunnel Targeted for 2033 Completion

Starts 12/31/2033ESTIMATED 72% CONFIDENCEGiven as scheduled, per the source^[1]: "The project is expected to be completed by 2033."

TELT, the joint French-Italian agency building the Mont d'Ambin base tunnel under the Alps, is now aiming to finish the roughly 57km bore by the end of 2033.

€11.1B

1.00

Transport09/20/2026@BuildDesk

Scarborough Subway Extension Opens on Line 2

Scarborough Centre, Scarborough, Toronto, Ontario, CanadaMetrolinx

Starts 12/31/2033DELAYED3 years late40% CONFIDENCEThe article says "reports suggest the project may not open until 2033", a year with no fixed day, so the pin sits at the end of 2033.^[1]

The 7.8-kilometre extension carries Line 2 Bloor-Danforth east from Kennedy station to three new stops - Lawrence and McCowan, Scarborough Centre and a terminal at McCowan and Sheppard - replacing the Line 3 RT shut in 2023, and is projected to carry about 105,000 trips a day. Infrastructure Ontario values the stations, rail and systems contract alone at $5.7 billion.

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Transport09/14/2026@BuildDesk

Melbourne Airport Rail Link

Melbourne Airport, Victoria, Australia

Starts 12/31/2033DELAYED4 years late67% CONFIDENCEDate has moved, per the source^[1]: originally due by 2029, "that deadline is now looking a lot more like 2033"; Victoria’s own project page confirms the later date.

A AU$12BN rail line to finally connect Melbourne Airport to the city, alongside a AU$4.5BN airport overhaul that adds a third runway and expands the international terminal.

A$12B

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Architecture09/14/2026@BuildDesk

One London Tower Targets 2033 Completion

Undershaft, City of London, United Kingdom

Starts 12/31/2033ESTIMATED 69% CONFIDENCEA target, per the source^[1]: the tower "will begin construction in 2028 for a completion in 2033," after receiving "full planning consent from the City of London^[3] Corporation in December 2025."

One London, the tower formerly known as 1 Undershaft that will match the Shard as Western Europe's tallest building, finally won full planning consent after nearly a decade of delays.

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Transport09/15/2026@BuildDesk