Tunneling
Amtrak crews sustain 115-year-old Hudson River tunnels as Gateway project advances
Amtrak crews are performing nightly inspections and repairs inside the 115-year-old Hudson River rail tunnels to keep the Northeast Corridor’s only Manhattan rail link operational. With structural deterioration and Hurricane Sandy damage ongoing, major rehabilitation can’t begin until new Gateway tunnels open in the 2030s.
Nevada congresswoman questions dropped fines for Boring Co. after firefighter injuries in Las Vegas
Rep. Dina Titus has asked Nevada Gov. Joe Lombardo to explain why his administration dropped a $425,000 fine against The Boring Co. after firefighters were injured during a Las Vegas tunnel training incident.
Global tunnel construction projects reach $1.5 trillion worldwide
Global tunnel construction activity hits a record $1.5 trillion, led by major investments in North-East Asia, Western Europe, and North America, according to a new report.
Tunnel boring machine Elaine reaches finish line in Northside Interceptor project
Akron’s “Elaine” tunnel boring machine has completed the 1-mile Northside Interceptor Tunnel beneath the city’s North Hill neighborhood, marking a major step in the city’s sewer overhaul and effort to restore the Cuyahoga River.
Elon Musk's Boring Co. fined for dumping drilling waste into Vegas sewer system
Elon Musk's Boring Company has been fined nearly $500,000 after improperly discharging drilling fluids into Las Vegas municipal manholes during its Vegas Loop tunnel project, prompting cleanup of more than 2,400 gallons of waste and raising infrastructure-integrity concerns.
After 62 years, NYC's third water tunnel nears completion
New York City’s $6 billion Water Tunnel No. 3, under construction since 1970, is nearing completion. When finished in 2032, the 60-mile tunnel will deliver water to all five boroughs, providing critical redundancy and reliability for the city’s century-old water infrastructure.
Robots and AI drive next-generation tunnel construction in Hong Kong
Hong Kong’s CEDD is transforming tunnel construction with AI and robotics. Autonomous inspection and drilling systems on the Trunk Road T2 project have boosted efficiency by 40% and reduced labor by 60%, setting a new benchmark for smart infrastructure.
Tetra Tech to oversee groundwater monitoring for UK’s Thames Tideway Tunnel
Tetra Tech was selected by Tideway to lead groundwater monitoring for the 15.5-mile Thames Tideway Tunnel in London under a $3.2 million contract aimed at reducing sewer overflows and improving water quality in the River Thames.
Potomac River Tunnel project enters construction phase beneath Washington, D.C.
DC Water has begun tunneling for the 5.5-mile Potomac River Tunnel Project, part of the Clean Rivers Program to reduce sewer overflows and improve water quality in Washington, D.C. The tunnel will cut overflow volume by 93 percent once complete.
U.S. Army Corps approves Enbridge's $500 million Line 5 Tunnel project
The U.S. Army Corps of Engineers has granted federal approval for Enbridge’s Line 5 Great Lakes Tunnel, a $500 million project to encase the existing oil pipeline beneath Michigan’s Straits of Mackinac in a concrete tunnel. The permit marks a major milestone for the Canadian energy company’s plan to reinforce one of the region’s most scrutinized pipeline systems.
Utah city launches historic $70 million tunnel project using box jacking under active rail line
The City of Bluffdale, Utah, has begun work on a $70 million infrastructure project to replace the aging 14600 South underpass with a new four-lane tunnel built beneath active train tracks. Using an advanced Italian “box jacking” technique—never before applied in the U.S.—crews will construct the new tunnel without disrupting rail service.
Tunnel replacement work begins on Goshen/Gering-Fort Laramie Canal after 2019 collapse
Construction is set to begin this fall on the long-awaited replacement of Tunnel No. 2 along the Goshen/Gering-Fort Laramie Canal, six years after a collapse halted water deliveries to more than 100,000 acres in Nebraska and Wyoming. Preliminary work will prepare inlet and outlet structures and access roads ahead of full tunnel excavation in 2026, with total project completion expected by spring 2028.
Worker killed after 50-ft fall at Gateway Tunnel construction site in NYC
A construction worker was killed after a fall while working on the Hudson Yards Concrete Casing project, part of the Hudson River Tunnel expansion linking Penn Station to new rail tubes. According to multiple news outlets, authorities are investigating the incident, which has halted all construction on the site pending review.
Expert panel backs single-bore tunnel plan for San Jose BART project
The Santa Clara Valley Transportation Authority confirmed a single-bore tunnel design for the BART Silicon Valley Phase II project in San Jose, following an expert review that cited lower risk and reduced disruption compared to dual-bore alternatives.
Construction advances on Toronto's $27 billion Ontario Line subway project
Toronto’s $27 billion Ontario Line subway project is advancing rapidly, with several underground station sites now beginning to take recognizable form. The 15.6-km line will add 15 new stations in what is one of the city’s most ambitious infrastructure undertakings in decades.
Gateway Tunnel construction continues despite Trump's move to terminate funding
Work continues on New York’s $16 billion Gateway Tunnel despite President Trump’s move to terminate federal funding for the critical Hudson River rail project.
$2 billion, 20-story-deep DigIndy tunnels complete in Indianapolis
Indianapolis has completed the $2 billion DigIndy Tunnel System — a 28-mile network running 20 stories underground — to capture stormwater and sewage overflows, improving water quality and protecting the White River.
Gateway Commission extends $665 million contract for Hudson Tunnel Project
The Gateway Development Commission has extended MPA Delivery Partners’ contract by $665 million to continue managing the Hudson Tunnel Project, advancing construction of twin rail tunnels beneath the Hudson River and rehabilitation of the existing 115-year-old tunnel.
Topcon, Amberg launch integrated solutions for tunnel construction and surveying
Topcon and Amberg Technologies unveiled new integrated tunnel construction solutions at INTERGEO 2025, combining advanced positioning and measurement systems to improve accuracy, automation, and data workflows in underground infrastructure projects.
Skanska-Fay JV completes $450 million Baltimore tunnel project two years early
A joint venture between Skanska and Fay, S&B USA Construction, has achieved substantial completion of CSX’s $450 million Howard Street Tunnel Modernization Project in Baltimore—nearly two years ahead of schedule.
U.S. freezes $18 billion in funding for NYC tunnel, subway projects amid shutdown
The Trump administration has halted roughly $18 billion in federal funding tied to two of New York City’s largest transit infrastructure projects — the long-delayed Hudson River rail tunnel and the expansion of the Second Avenue subway.
TxDOT advances massive drainage tunnel beneath I-35 in Austin
TxDOT is advancing one of Austin’s largest tunnel projects—a 6.5-mile, 22-foot-wide drainage tunnel beneath I-35. The massive system, built with German tunnel boring machines, will keep new sunken lanes from flooding and send stormwater to the Colorado River.
Cleveland, Ohio sewer district passes halfway mark on $3 billion tunnel program
Cleveland’s $3 billion Project Clean Lake is more than halfway complete, with deep-rock storage tunnels already cutting sewage overflows into Lake Erie by 2 billion gallons annually.
Is the Boring Company tunneling blind in Nashville? Experts warn rock tests fall short
Elon Musk’s Boring Company plans just five soil borings for its Nashville tunnel project, far fewer than experts recommend. Geologists warn the limited testing could mean tunneling blindly through the city’s fragile limestone terrain.
U.S. DOJ defends Enbridge’s Line 5 pipeline in Michigan dispute
The U.S. Justice Department has filed a statement of interest backing Enbridge in its fight with Michigan over the Line 5 pipeline, arguing the state overstepped federal pipeline safety authority and interfered with U.S.–Canada treaty obligations.
Jacobs, Rambøll to lead design of Denmark’s Marselis Tunnel
Jacobs and Rambøll have been tapped to design and manage the Marselis Tunnel in Aarhus, Denmark, a key infrastructure project linking Aarhus Port to the E45 Motorway and easing heavy traffic through the city.
Newsom's Delta Tunnel project faces setback as fast-track bills die in legislature
California’s Delta Conveyance Project suffered a major setback last week after two fast-track bills died in committee. Gov. Newsom’s $60–100 billion water tunnel has faced growing opposition over costs, environmental risks and community impacts.
Elon Musk’s Boring Company halts Vegas Loop tunneling after worker injury
A worker suffered a “crushing injury” inside a Boring Company tunnel near the Las Vegas Strip, prompting officials to pause work on the Vegas Loop project while the incident is investigated.
Vancouver nears completion of $208 million water tunnel
Metro Vancouver is making progress on its long-term water security initiatives, with excavation for the Annacis Water Supply Tunnel nearing completion. The 1.43-mi steel main is part of a $208.1 million project awarded to Traylor Aecon General Partnership, with full completion expected by 2027.
Northern Michigan lawmakers back Enbridge Line 5 tunnel project
Northern Michigan lawmakers have renewed support for Enbridge’s Line 5 tunnel project, calling it vital to jobs, energy supply, and Great Lakes protection, while urging regulators to fast-track approval.
- TxDOT advances massive drainage tunnel beneath I-35 in Austin
- Glenfarne Alaska LNG targets late-2026 construction start for 807-mile pipeline project
- U.S. water reuse boom to fuel $47 billion in infrastructure spending through 2035
- $2.3 billion approved to construct 236-mile Texas-to-Gulf gas pipeline
- Major water pipe break in Puerto Rico hits over 165,000 customers
- Pennsylvania American Water launches interactive map to identify, replace lead water service lines
- Trump's tariffs drive $33 million cost increase for Cincinnati sewer project
- Utah city launches historic $70 million tunnel project using box jacking under active rail line
- Tulsa residents warned after sewer lines damaged by boring work
- Fatal trench collapse halts sewer construction in Massachusetts; two workers hospitalized