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London'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.$5B0.72Dubai Metro's Blue Line Opens on the Metro's 20th Anniversary
SCHEDULED75% CONFIDENCEin 3.0 yearsThe report states the line "is expected to start operations on 9-9-2029, the Roads and Transport Authority (RTA) announced", a fixed announced day chosen to echo the metro's own 9-9-2009 opening.[1]The 30 km Blue Line adds 14 stations across Dubai Silicon Oasis, Academic City, International City, Dubai Creek Harbour, Mirdif and Al Warqa, with 15.5 km of underground track and 14.5 km elevated. The RTA awarded the construction contract to a consortium of MAPA, LIMAK and CRRC in December 2024 and expects 28 trains to carry 200,000 riders a day by 2030, rising to 320,000 by 2040.AED 20.5B0.68DC Water Launches the Boring Machine Mary Under the Potomac
West Potomac Park, Ohio Drive SW, Washington, D.C. 20024, United StatesDistrict of Columbia Water and Sewer Authority
CONFIRMED90% CONFIDENCE166 days agoDC Water's[1] own release of April 10, 2026 announces the launch as having happened that day.DC Water lowered the tunnel boring machine Mary into a 100-foot-deep shaft in West Potomac Park and started her north towards Georgetown University, the first 2.4 miles of a 5.5-mile combined sewer overflow tunnel. The $819 million tunnel is part of the Clean Rivers Project and will cut Potomac overflow events from 74 a year to four; a second Herrenknecht machine, Emily, bores south towards Joint Base Anacostia-Bolling.0.67Dubai Creek Tower Construction Resumes With a Shorter Redesign
CONFIRMED83% CONFIDENCE2.6 years agoHappened as dated, per the source[1]: "Construction restarted in March 2024".Emaar restarted work on the long-stalled Dubai Creek Tower after redesigning it to stand shorter than the Burj Khalifa.0.67Austerlitz Basin Opens to Clean Up the Seine for the Olympics
CONFIRMED89% CONFIDENCE2.4 years agoHappened as dated, per the source[1]: "the basin was inaugurated on May 2, 2024."Paris inaugurated the Austerlitz basin, a giant underground stormwater tank built to stop sewage overflow into the Seine in time for Olympic swimming events.$1.5B0.66Deep Dive Dubai Opens as the World's Deepest Pool
Deep Dive Dubai, Dubai, United Arab Emirates
CONFIRMED84% CONFIDENCE5.2 years agoHappened as dated, per the source[1]: "it is the deepest swimming pool in the world".Deep Dive Dubai opened to the public, a 60-metre dive facility with a sunken-city set built inside a giant oyster-shaped building.0.66Rogfast Undersea Tunnel
SCHEDULED78% CONFIDENCEin 6.7 yearsGiven as scheduled, per the source[1]: the tunnel "is scheduled to open in 2033", with an opening to traffic "in summer 2033."Norway's Rogfast, a 27km twin-bore tunnel reaching 392m below the Boknafjord, will become the world's longest and deepest undersea road tunnel, replacing a ferry crossing on the E39 highway.$2.4B0.66Egypt Opens the Mubarak Pumping Station on the Toshka Project
CONFIRMED78% CONFIDENCE21.6 years agoSources agree the Mubarak Pumping Station "was inaugurated in March 2005"; no source gives the exact day, so this pin is dated to the start of that month.[1]The world's largest pumping station begins lifting water from Lake Nasser into the Sheikh Zayed Canal, launching Egypt's attempt to grow a second Nile valley 310 km into the Sahara.$436M0.66North East Link Opens in Melbourne
Melbourne, Victoria
ESTIMATED71% CONFIDENCEin 1.7 yearsGiven as a target, not a fixed date, per en.wikipedia.org[1]: "…nnelling commenced in mid 2024, with an expected completion in late 2028.[7][8] In 2021, the length…"Victoria's largest road project, burying the missing link in Melbourne's ring road in twin three-lane tunnels. Estimated date.A$26.1B0.66Sydney 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 2028.0.65Marmaray Tunnel Excavators Uncover Constantinople's Theodosian Harbor
Yenikapı, Fatih, Istanbul, Turkey
ESTIMATED62% CONFIDENCE20.9 years agoAccounts of the Marmaray excavation (Grand Sirkeci[3] Hotel's history page and the Harvard 'Urban Imagination' exhibit) place the discovery of the silted-up harbor at Yenikapı in November 2005, without a more precise day recorded.Digging for Istanbul's Marmaray rail tunnel at Yenikapı, workers strike the silted-up remains of the Theodosian Harbor, a Byzantine-era port that would go on to yield 37 shipwrecks and roughly 100,000 artifacts.0.65Al Maktoum International Airport New Terminal
Dubai, United Arab Emirates
ESTIMATED67% CONFIDENCEin 5.7 yearsGiven as a target, not a fixed date, per en.wikipedia.org[1]: "…r year in 2013.[needs update][11] It is expected to handle 150 million passengers by 2032.[13] The p…"Dubai's $35 billion replacement hub, designed to eventually handle 260 million passengers a year. Estimated date.AED 128B0.65
Ministry of Water Resources and Irrigation