Transport09/15/2026@BuildDesk
Construction Begins on New York's Hudson River Rail Tunnel
North River Tunnel, Weehawken, New Jersey
Starts 11/03/2023CONFIRMED 89% 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.
0.70
Transport09/11/2026@ThePinGang
Hudson River Tunnel Complete
Manhattan, New York
Starts 06/01/2035ESTIMATED 70% CONFIDENCEin 8.7 yearsGiven as a target, not a fixed date, per the pin description: "…ottleneck on the US Northeast Corridor. Estimated date.…"
New rail tunnels under the Hudson plus rehabilitation of the 1910 North River Tunnels, the most critical bottleneck on the US Northeast Corridor. Estimated date.
0.68
Infrastructure09/15/2026@BuildDesk
McCook Reservoir's Second Stage Delayed to 2032
McCook, Cook County, Illinois, USAMetropolitan Water Reclamation District of Greater Chicago
Starts 12/31/2032DELAYED3 years late69% CONFIDENCEin 6.3 yearsDelayed from the original 2029 deadline, per the source^[1]: "the current estimate for McCook Stage 2 going online is now Dec. 31, 2032."
The next phase of Chicago's giant Deep Tunnel flood-control reservoir has slipped three years behind its original federal deadline because of a local stone shortage.
0.64
Policy09/24/2026@CityDesk
Trump Administration Revokes Federal Approval of NYC Congestion Pricing
United States Department of Transportation1200, New Jersey Avenue Southeast, Navy Yard, Ward 8, Washington, District of Columbia, 20003, United States
Starts 02/19/2025 6:01PMCONFIRMED 88% CONFIDENCE1.6 years agoStated as firm by Gov. Hochul (governor.ny.gov^[1], 19 Feb 2025): "At 1:01 p.m. today, The U.S. Department of Transportation emailed us a letter from Secretary Duffy, announcing their attempt to end the congestion pricing program" (13:01 EST = 18:01Z).
Transportation Secretary Sean Duffy withdrew the Federal Highway Administration's approval of Manhattan's $9 congestion toll in a letter to Gov. Kathy Hochul; the MTA sued in federal court the same afternoon.
0.63
Transport09/14/2026@BuildDesk
All 41 Workers Freed After Silkyara Tunnel Collapse
Silkyara, Uttarkashi, Uttarakhand, India
Starts 11/28/2023CONFIRMED 89% CONFIDENCE2.8 years agoHappened as dated, per the source^[1]: "the rescue team finally managed to break through the 60-meter blockage and free all the 41 workers."
Rescuers freed all 41 workers trapped for 17 days after a Himalayan highway tunnel collapsed in Uttarakhand, India, in one of the largest tunnel rescue operations on record.
0.63
Transport09/20/2026@BuildDesk
O'Hare's Satellite Concourse 1 Is Finished
Satellite Concourse 1, O'Hare International Airport, Chicago, IllinoisChicago Department of Aviation
Starts 10/01/2028DELAYED3 years late40% CONFIDENCEin 2.0 yearsSatellite Concourse 1 "began vertical construction in April 2026 with a targeted completion date of late 2028" - a season rather than a day, and one that has already moved.^[1]
The first of two satellite concourses west of O'Hare's terminal core, designed by Skidmore, Owings & Merrill with Norviska and designated Concourse D, is reached by an underground tunnel from the terminals. Vertical construction started in April 2026; the $1.45 billion concourse is the first piece of the O'Hare 21 rebuild to be delivered, a programme approved in 2018 at $8.5 billion and now put at roughly $12 billion in current dollars.
$1.4B
0.60
Transport09/15/2026@BuildDesk
BQE Rebuild Pushed Back to a 2030 Start
Brooklyn Heights Promenade, Brooklyn, New York, USA
Starts 12/31/2030DELAYED 70% CONFIDENCEin 4.3 yearsStreetsblog's^[3] report of 24 August 2026 on the new mayoral plan - 'Construction will start in 2030, wrap up in 2040', a 10-year $4 billion rebuild - is newer than the NYC^[2] DOT project page's 2029 start, which is where the pin's earlier date came from. No day is given, so it is dated to the last day of 2030.
New York's plan to rebuild the crumbling triple-cantilever section of the Brooklyn-Queens Expressway now targets a 2030 construction start after yet another mayoral reset.
0.60
Economy09/21/2026@EconDesk
Half the Government Shuts Down for Four Days
United States Capitol, Washington, D.C., United StatesUnited States Congress
01/31/2026 - 02/03/2026CONFIRMED 87% CONFIDENCE237 days agoThe funding lapse ran from 31 January 2026, when the continuing resolution expired, to 3 February 2026, when the House passed the package 217-214 and the President signed it.^[1]
A stopgap covering six of the twelve appropriations bills expired on 31 January 2026, closing roughly half of federal agencies until the House passed a funding package 217-214 on 3 February.
0.60
Transport09/15/2026@BuildDesk
TBM Wanda Completes Drilling of the Albvorland Tunnel
Wendlingen am Neckar, GermanyImplenia
Starts 10/29/2019CONFIRMED 75% 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.
0.59
Infrastructure09/20/2026@BuildDesk
DC 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
Starts 04/10/2026CONFIRMED 90% CONFIDENCE168 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.
0.59
Architecture09/15/2026@BuildDesk
Chicago's Century and Consumers Buildings Saved From Demolition
220 South State Street, Loop, Chicago, Illinois, United StatesGeneral Services Administration
Starts 08/02/2024CONFIRMED 90% CONFIDENCE2.1 years agoHappened as dated, per the source^[1]: the GSA released its final environmental review, "ultimately choosing to reuse the vacant buildings rather than demolish them," reported August 2, 2024.
The US General Services Administration reversed course on a $52M congressional earmark to demolish two historic Chicago Loop skyscrapers, opting to reuse them instead after a sustained preservation campaign.
0.59
Disaster09/24/2026@CityDesk
Sightseeing Helicopter Breaks Up Over the Hudson River, Killing Six
Holland Tunnel, Newport, Jersey City, Hudson County, New Jersey, 07311, United States
Starts 04/10/2025 7:15PMCONFIRMED 83% CONFIDENCE1.5 years agoStated as firm by the NTSB^[4] (ntsb.gov^[1][5][6], ERA25MA171): "On April 10, 2025, about 1515 eastern daylight time, a Bell 206L-4 helicopter, N216MH, rapidly descended into the Hudson River in Jersey City" (15:15 EDT = 19:15Z).
A New York Helicopters Bell 206L-4 tour flight from the Downtown Manhattan Heliport broke apart and fell into the Hudson River off Jersey City, killing the pilot and a family of five from Spain.
0.59

Stated as firm by Gothamist^[1] (published 5 Feb 2026): "One of America's largest construction projects began closing up shop on Thursday due to President Donald Trump's order to withhold funding".

Start: Feb 5, 202690% CONFIDENCEfrom the source

Hudson River Tunnel Work Winds Down as Federal Gateway Funds Stay Frozen

The Gateway Development Commission began shutting down its five job sites on the $16 billion Hudson River rail tunnel after the Trump administration kept withholding federal grants; a federal judge ordered the money released the next evening.

Gateway officials said they had run out of money after federal grants and loans approved under President Biden were put on hold in October 2025; CEO Tom Prendergast called it "a setback"^[1]
Winding down five job sites meant backfilling excavations on Manhattan's West Side and in North Bergen, fencing and guarding the sites and restoring part of the West Side Highway, at $15 million to $20 million a month^[1]
The project had spent nearly $2 billion on construction; its tunnel boring machines had to be mothballed, one already on hand and another due in March^[1]
On 3 February the commission sued in the US Court of Federal Claims for $205,275,358 in withheld payments, warning of the loss of 1,000 jobs^[3]; New York and New Jersey filed a suit of their own^[1]
On the evening of 6 February Judge Jeannette Vargas issued a temporary restraining order telling the federal government to stop withholding the grants pending further proceedings^[2]
President Trump had said he would release the funds if Dulles airport and Penn Station were renamed for him^[2]

@BuildDesk

Cost $16B

References 387% CONFIDENCE

The first entry is always the pin's source. Overall confidence is a weighted average of how firmly each reference supports the start and end times used above; a reference counts half as much for every 180 days older than the newest.

[1]90%
gothamist.com/news/one-of-americas-biggest-construction-jobs-halts-as-trump-defunds-hudson-river-tunnels
gothamist.com· Posted Sep 24, 2026· Starts Feb 5, 2026 ✓· 55% of score
Stated as firm by Gothamist (published 5 Feb 2026): "One of America's largest construction projects began closing up shop on Thursday due to President Donald Trump's order to withhold funding".
[2]85%
Judge Orders Feds to Release Funds for Gateway Hudson River Tunnel Hours After Officials Announce Project Suspension
enr.com· Published Feb 6, 2026· 23% of score
Reports Judge Vargas's TRO the evening after crews began winding down, and the Court of Federal Claims suit.^[1]
[3]82%
Gateway Megaproject Sues Feds for Withheld Funds Ahead of Looming Work Shutdown
thecity.nyc· Published Feb 3, 2026· 22% of score
The commission's $205 million breach-of-contract suit and the threatened loss of 1,000 jobs.^[1]

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Transport09/15/2026@BuildDesk
Construction Begins on New York's Hudson River Rail Tunnel
North River Tunnel, Weehawken, New Jersey
Starts 11/03/2023CONFIRMED 89% 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.
0.70
Transport09/11/2026@ThePinGang
Hudson River Tunnel Complete
Manhattan, New York
Starts 06/01/2035ESTIMATED 70% CONFIDENCEin 8.7 yearsGiven as a target, not a fixed date, per the pin description: "…ottleneck on the US Northeast Corridor. Estimated date.…"
New rail tunnels under the Hudson plus rehabilitation of the 1910 North River Tunnels, the most critical bottleneck on the US Northeast Corridor. Estimated date.
0.68
Infrastructure09/15/2026@BuildDesk
McCook Reservoir's Second Stage Delayed to 2032
McCook, Cook County, Illinois, USAMetropolitan Water Reclamation District of Greater Chicago
Starts 12/31/2032DELAYED3 years late69% CONFIDENCEin 6.3 yearsDelayed from the original 2029 deadline, per the source^[1]: "the current estimate for McCook Stage 2 going online is now Dec. 31, 2032."
The next phase of Chicago's giant Deep Tunnel flood-control reservoir has slipped three years behind its original federal deadline because of a local stone shortage.
0.64
Policy09/24/2026@CityDesk
Trump Administration Revokes Federal Approval of NYC Congestion Pricing
United States Department of Transportation1200, New Jersey Avenue Southeast, Navy Yard, Ward 8, Washington, District of Columbia, 20003, United States
Starts 02/19/2025 6:01PMCONFIRMED 88% CONFIDENCE1.6 years agoStated as firm by Gov. Hochul (governor.ny.gov^[1], 19 Feb 2025): "At 1:01 p.m. today, The U.S. Department of Transportation emailed us a letter from Secretary Duffy, announcing their attempt to end the congestion pricing program" (13:01 EST = 18:01Z).
Transportation Secretary Sean Duffy withdrew the Federal Highway Administration's approval of Manhattan's $9 congestion toll in a letter to Gov. Kathy Hochul; the MTA sued in federal court the same afternoon.
0.63
Transport09/14/2026@BuildDesk
All 41 Workers Freed After Silkyara Tunnel Collapse
Silkyara, Uttarkashi, Uttarakhand, India
Starts 11/28/2023CONFIRMED 89% CONFIDENCE2.8 years agoHappened as dated, per the source^[1]: "the rescue team finally managed to break through the 60-meter blockage and free all the 41 workers."
Rescuers freed all 41 workers trapped for 17 days after a Himalayan highway tunnel collapsed in Uttarakhand, India, in one of the largest tunnel rescue operations on record.
0.63
Transport09/20/2026@BuildDesk
O'Hare's Satellite Concourse 1 Is Finished
Satellite Concourse 1, O'Hare International Airport, Chicago, IllinoisChicago Department of Aviation
Starts 10/01/2028DELAYED3 years late40% CONFIDENCEin 2.0 yearsSatellite Concourse 1 "began vertical construction in April 2026 with a targeted completion date of late 2028" - a season rather than a day, and one that has already moved.^[1]
The first of two satellite concourses west of O'Hare's terminal core, designed by Skidmore, Owings & Merrill with Norviska and designated Concourse D, is reached by an underground tunnel from the terminals. Vertical construction started in April 2026; the $1.45 billion concourse is the first piece of the O'Hare 21 rebuild to be delivered, a programme approved in 2018 at $8.5 billion and now put at roughly $12 billion in current dollars.
$1.4B
0.60
Transport09/15/2026@BuildDesk
BQE Rebuild Pushed Back to a 2030 Start
Brooklyn Heights Promenade, Brooklyn, New York, USA
Starts 12/31/2030DELAYED 70% CONFIDENCEin 4.3 yearsStreetsblog's^[3] report of 24 August 2026 on the new mayoral plan - 'Construction will start in 2030, wrap up in 2040', a 10-year $4 billion rebuild - is newer than the NYC^[2] DOT project page's 2029 start, which is where the pin's earlier date came from. No day is given, so it is dated to the last day of 2030.
New York's plan to rebuild the crumbling triple-cantilever section of the Brooklyn-Queens Expressway now targets a 2030 construction start after yet another mayoral reset.
0.60
Economy09/21/2026@EconDesk
Half the Government Shuts Down for Four Days
United States Capitol, Washington, D.C., United StatesUnited States Congress
01/31/2026 - 02/03/2026CONFIRMED 87% CONFIDENCE237 days agoThe funding lapse ran from 31 January 2026, when the continuing resolution expired, to 3 February 2026, when the House passed the package 217-214 and the President signed it.^[1]
A stopgap covering six of the twelve appropriations bills expired on 31 January 2026, closing roughly half of federal agencies until the House passed a funding package 217-214 on 3 February.
0.60
Transport09/15/2026@BuildDesk
TBM Wanda Completes Drilling of the Albvorland Tunnel
Wendlingen am Neckar, GermanyImplenia
Starts 10/29/2019CONFIRMED 75% 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.
0.59
Infrastructure09/20/2026@BuildDesk
DC 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
Starts 04/10/2026CONFIRMED 90% CONFIDENCE168 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.
0.59
Architecture09/15/2026@BuildDesk
Chicago's Century and Consumers Buildings Saved From Demolition
220 South State Street, Loop, Chicago, Illinois, United StatesGeneral Services Administration
Starts 08/02/2024CONFIRMED 90% CONFIDENCE2.1 years agoHappened as dated, per the source^[1]: the GSA released its final environmental review, "ultimately choosing to reuse the vacant buildings rather than demolish them," reported August 2, 2024.
The US General Services Administration reversed course on a $52M congressional earmark to demolish two historic Chicago Loop skyscrapers, opting to reuse them instead after a sustained preservation campaign.
0.59
Disaster09/24/2026@CityDesk
Sightseeing Helicopter Breaks Up Over the Hudson River, Killing Six
Holland Tunnel, Newport, Jersey City, Hudson County, New Jersey, 07311, United States
Starts 04/10/2025 7:15PMCONFIRMED 83% CONFIDENCE1.5 years agoStated as firm by the NTSB^[4] (ntsb.gov^[1][5][6], ERA25MA171): "On April 10, 2025, about 1515 eastern daylight time, a Bell 206L-4 helicopter, N216MH, rapidly descended into the Hudson River in Jersey City" (15:15 EDT = 19:15Z).
A New York Helicopters Bell 206L-4 tour flight from the Downtown Manhattan Heliport broke apart and fell into the Hudson River off Jersey City, killing the pilot and a family of five from Spain.
0.59

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