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Gross Dam Raise Tops Out at 470 Feet
BESTÄTIGT86 % SICHERHEITvor 112 TagenHappened as dated, per the source[1]: "workers placed the final load of roller-compacted concrete on the top of the dam, bringing Gross Dam to a height of 470 feet."Denver Water finished raising Colorado's Gross Dam by 131 feet, topping out the concrete work that will nearly triple the reservoir's storage capacity.0.59Hama Hama Oyster Saloon Opens on Hood Canal
Hama Hama Oyster Saloon, 35846, US 101, Hamma Hamma, Mason County, Washington, 98555, United StatesHama Hama Oyster Company
GESCHÄTZT75 % SICHERHEITvor 12,4 JahrenThe New York Times' Restaurant List 2026 (15 September 2026) gives the opening only as April 2014, with no day. The pin sits on the last day of that month by this vertical's month-only convention, so the real opening day may be earlier in the month.[1]The Robbins family's five-generation oyster farm opens an open-air saloon on the western shore of Hood Canal, serving oysters pulled from the water in view.0.59Hoover Dam Dedicated by President Roosevelt
BESTÄTIGT85 % SICHERHEITvor 91 JahrenHappened as dated, per the source[1]: "President Franklin D. Roosevelt dedicates dam September 30th."President Franklin D. Roosevelt dedicated the Hoover Dam on the Colorado River, then the largest concrete structure ever built.0.58London's Thames Tideway 'Super Sewer' Officially Opens
BESTÄTIGT89 % SICHERHEITvor 1,4 JahrenHappened 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.$5B0.57Major Construction Begins on the New Long Bridge Over the Potomac
BESTÄTIGT90 % SICHERHEITvor 254 TagenVPRA's notice says the work windows "begin January 12, 2026, and will continue until the project's completion in 2030".[1]The Virginia Passenger Rail Authority moved the Long Bridge Project into full construction, opening daytime work windows through the Washington, D.C. construction zone because the District's noise and vibration rules bar the work at night. A new two-track bridge beside the century-old Long Bridge will give a continuous four-track corridor between Arlington and L'Enfant Plaza, relieving the worst passenger-rail bottleneck on the East Coast.0.57New York Harbor Storm Surge Plan
GESCHÄTZT67 % SICHERHEITin 18,3 JahrenA target, per the source[1]: if approved, "work would begin in 2030 and be completed by 2044"; as of now the plan "has not yet received final approval."The US Army Corps of Engineers is advancing a $52.6BN plan of storm-surge gates, sea walls and levees around New York Harbor, after shelving a more radical $119BN 'mega sea wall' spanning the harbor mouth.$52.6B0.57Zweite Stufe des McCook-Reservoirs auf 2032 verschoben
VERSCHOBEN3 Jahre verspätet69 % SICHERHEITin 6,3 JahrenVerschoben gegenüber der ursprünglichen Frist 2029, laut Quelle: „Die aktuelle Schätzung für die Inbetriebnahme von McCook Stufe 2 lautet nun 31. Dezember 2032.“[1]Die nächste Phase des riesigen Hochwasserschutz-Reservoirs Deep Tunnel in Chicago liegt wegen der schwachen örtlichen Steinnachfrage drei Jahre hinter der ursprünglichen bundesstaatlichen Frist zurück.0.57Austerlitz Basin Opens to Clean Up the Seine for the Olympics
BESTÄTIGT89 % SICHERHEITvor 2,4 JahrenHappened 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.$1.5B0.57Hampton Roads Bridge-Tunnel Expansion
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BESTÄTIGT84 % SICHERHEITvor 138 JahrenHappened as dated, per the source[1]: "opened to the public in Washington, D.C., on this day in history, Oct. 9, 1888".After decades of stalled funding and a visible change in stone partway up its shaft, the Washington Monument finally opened its doors to visitors in 1888.0.56The Brooklyn Bridge Opens
Brooklyn Bridge, New York, NY, USA
BESTÄTIGT82 % SICHERHEITvor 143,3 JahrenHappened as dated, per the source[1]: "Brooklyn Bridge opens | May 24, 1883".New York's Brooklyn Bridge opened to the public, completing a 13-year construction effort that Emily Warren Roebling steered to completion after her husband was incapacitated by decompression sickness.0.56City of Paris Opens Its Sewers to Public Tours During the 1867 World's Fair
GESCHÄTZT73 % SICHERHEITvor 159,5 JahrenThe Paris[3] sewer museum's own history page states tours "began in 1867, during the World's Fair" without naming an exact day, so the pin uses the Fair's opening date.During the 1867 Exposition Universelle, Paris opened Baron Haussmann's newly rebuilt sewer network to public tours for the first time, turning Eugène Belgrand's engineering into a civic showcase.0.56
United States Bureau of Reclamation
