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Silvertown Tunnel Opens Under the Thames
CONFIRMED90% CONFIDENCE1.5 years agoHappened as dated, per the source[1]: "The Silvertown Tunnel will open on 7 April 2025, as confirmed by TfL[2]."Transport for London opened the Silvertown Tunnel, a new road crossing under the Thames built to relieve the perennially congested Blackwall Tunnel a few hundred metres away.$2.8B0.72Construction Begins on New York's Hudson River Rail Tunnel
North River Tunnel, Weehawken, New Jersey
CONFIRMED89% CONFIDENCE2.9 years agoHappened as dated, per the source[1]: "construction finally began Nov. 3 on the Hudson River Tunnel portion of the Gateway Program[2]".Crews broke ground on the Hudson Tunnel Project, a new rail tunnel meant to relieve the century-old, storm-damaged North River Tunnel beneath the Hudson River.0.70Sydney Western Harbour Tunnel Set to Open
Warringah Freeway, Cammeray, Sydney, NSW, Australia
SCHEDULED80% CONFIDENCEin 2.3 yearsGiven as scheduled, per the source[1]: "Western Harbour Tunnel remaining on track to open to traffic in 2028".Sydney's Western Harbour Tunnel, redesigned mid-build from a cut-and-cover crossing to twin bored tunnels, is on track to open beneath the harbour in 2028.0.69Hong Kong Opens the Sha Tin to Central Link's Cross-Harbour Extension
CONFIRMED90% CONFIDENCE4.4 years agoHappened as dated, per the source[1]: the cross-harbour section was set to "fully open on May 15," reported days ahead of the 2022 launch.Hong Kong's MTR opened the cross-harbour section of the Sha Tin to Central Link, an immersed-tube rail tunnel under Victoria Harbour that gave Hong Kong Island a fourth rail link to Kowloon.$11.6B0.69London's Thames Tideway 'Super Sewer' Officially Opens
CONFIRMED89% CONFIDENCE1.4 years agoHappened as dated, per the source[1]: "King Charles III officially opened the Thames Tideway[3] Tunnel on May 7, 2025."King Charles III officially opened the Thames Tideway Tunnel, a 25km deep sewer built to stop billions of litres of sewage overflowing into the Thames each year.$5B0.69Hampton Roads Bridge-Tunnel Expansion
SCHEDULED83% CONFIDENCEin 338 daysGiven as scheduled, per VDOT and the source[1]: "the revised project schedule sets... a final completion date for August 27, 2027."Virginia is expanding the world's first bridge-tunnel, adding new tubes and widened approaches at Naval Station Norfolk, the largest naval base on Earth, more than 50 years after it first opened.$4B0.69Auckland City Rail Link Opens
Auckland, New Zealand
SCHEDULED81% CONFIDENCEin 39 daysGiven as scheduled, per en.wikipedia.org[1]: "…kland Transport and KiwiRail.[13] It is scheduled to open on 13 September 2026.[14] Initial proposal…"Twin 3.45 km tunnels turning Britomart from a dead-end terminus into a through station, doubling rail capacity. Estimated date.NZ$5.5B0.68Fehmarnbelt Tunnel Opens
Rødbyhavn, Denmark
ESTIMATED70% CONFIDENCEin 2.7 yearsGiven as a target, not a fixed date, per the pin description: "…enhagen rail travel to about 2.5 hours. Estimated date.…"An 18 km immersed tunnel under the Baltic links Denmark and Germany, cutting Hamburg to Copenhagen rail travel to about 2.5 hours. Estimated date.kr 52.6B0.67Hong Kong Opens the Central Kowloon Bypass Under Kowloon
CONFIRMED90% CONFIDENCE276 days agoThe Highways Department's project page states the "Central Kowloon Bypass (Yau Ma Tei Section) was opened to the public on 21 December 2025".[1]The Central Kowloon Route opens to traffic as the Central Kowloon Bypass (Yau Ma Tei Section), a 4.7 km dual three-lane trunk road that is about 3.9 km tunnel, running beneath densely built Kowloon from the Yau Ma Tei Interchange in West Kowloon to the Kai Tak Development Area and Kowloon Bay in the east. It forms the western half of Route 6.HK$42.4B0.67Stockholm's Förbifart Bypass Tunnel Now Targets 2030
DELAYED12 years late67% CONFIDENCEin 4.3 yearsGiven as scheduled, per the source[1]: "As of the end of 2019, the expected completion time is 14 years, year 2030".Sweden's roughly $4.5BN Förbifart Stockholm bypass tunnel, originally due in 2018, is now expected to open by 2030 after more than a decade of delays.$4.5B0.66Lyon-Turin Base Tunnel Targeted for 2033 Completion
ESTIMATED72% CONFIDENCEin 7.3 yearsGiven 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.€11.1B0.66TBM Wanda Completes Drilling of the Albvorland Tunnel
CONFIRMED75% CONFIDENCE6.9 years agoImplenia's[4] own project news release dates the southern tube breakthrough to 29 October 2019.Tunnel boring machine Wanda finished excavating the southern tube of the Albvorland Tunnel, the last major breakthrough on Deutsche Bahn's Stuttgart-Ulm high-speed line. The 8-kilometer twin-tube tunnel near Wendlingen am Neckar was built by Implenia and cuts travel time between Stuttgart and Ulm to roughly 30 minutes.0.66
