Tunneling
Tunnel fire injures worker at Toledo sewer repair site tied to Arlington sinkhole
A tunnel fire at a sewer repair site tied to the Arlington sinkhole in Toledo, Ohio, injured a worker and temporarily disrupted construction operations as officials investigate the cause.
W.A. Rasic advances San Diego $40 million pipeline with 66-inch main, I-8 tunnel
A $40 million San Diego pipeline project is installing a 66-inch water main and tunneling beneath Interstate 8 to improve system reliability and expand infrastructure capacity.
$225-million Lake Travis water tunnel project nears completion amid drought concerns
A nearly 2-mile water tunnel beneath Lake Travis is nearing completion, marking a key step in a $225 million effort to secure drought-resilient water supply for fast-growing Central Texas communities.
$180 million drainage tunnel anchors $256 million California, Texas water projects
A $180 million drainage tunnel project in California leads $256 million in newly awarded water and wastewater infrastructure work, including flood control and treatment plant expansion.
Elon Musk's Boring Co. names winners for urban tunnel loop projects across U.S.
The Boring Company has selected three U.S. cities for proposed underground Loop tunnel projects as part of its Tunnel Vision Challenge, advancing plans for urban transportation tunnels pending feasibility, regulatory approval and infrastructure analysis.
Hudson Tunnel Project advances as Gateway Program nears tunnel boring phase
Construction on the Hudson Tunnel Project is advancing on both sides of the Hudson River, with key milestones in shaft excavation, utility relocation and tunnel boring machine assembly as the Gateway Program moves closer to full-scale tunneling.
Toronto subway tunnel project passes halfway construction milestone
Construction of the Scarborough Subway Extension in Toronto has passed the halfway mark, with tunneling underway on a 10.7-meter diameter subway tunnel that will become the largest of its kind in Canada.
AECOM JV tapped for 3.25-mile CSO storage tunnel in NYC
AECOM and partners have been selected to oversee construction of New York City’s first combined sewer overflow (CSO) storage tunnel at Newtown Creek, a 3.25-mile project designed to reduce wastewater discharges and improve water quality.
Controlled blasting delivers breakthrough on Amtrak Baltimore utility tunnel
Crews have completed a tunneling breakthrough on a 345-foot utility siphon tunnel in Baltimore, a key enabling project for Amtrak’s B&P Tunnel replacement along the Northeast Corridor.
Gateway Hudson Tunnel construction resumes but funding uncertainty could halt work again
Construction on the Hudson Tunnel Project has restarted across all sites, but officials warn work could stop again within months if federal funding disbursements do not continue.
Massive Lego-like blocks form 11-mile Baltic Sea tunnel between Denmark, Germany
Engineers are assembling an 11-mile immersed tunnel beneath the Baltic Sea using massive prefabricated concrete segments as part of the $8 billion Fehmarnbelt Tunnel project connecting Denmark and Germany.
Musk’s Boring Company picks Tennessee tunnel finalists
Three Tennessee cities are among 16 finalists in Elon Musk’s Boring Company Tunnel Vision Challenge, which will award construction of a mile-long tunnel project as the company advances its Nashville Loop development.
The Woodlands, Texas, makes bid for Musk-backed tunnel project
The Woodlands Township in Texas has approved submission of a proposal to The Boring Company’s Tunnel Vision Challenge that could bring an underground transportation tunnel to Town Center at no cost to the Township.
Nevada lawmakers examine OSHA violations tied to Musk’s Vegas tunnel project
Nevada lawmakers are examining OSHA and environmental safety violations tied to The Boring Company’s Las Vegas tunnel project, raising concerns about regulatory oversight and enforcement delays.
Nashville airport signs deal with The Boring Company for underground transit loop
The Metropolitan Nashville Airport Authority has signed a letter of intent with The Boring Company to explore development of an underground transit loop connecting Nashville International Airport to key city destinations.
Portland advances Bull Run raw water tunnel and pipeline construction
Portland’s Bull Run Filtration Project is advancing with tunnel excavation and more than 6,000 feet of new underground pipeline installed as the city works toward a 2027 regulatory compliance deadline.
Another $77 million released for Gateway tunnel as funding battle continues
The federal government has released another $77 million in previously frozen funding for the $16-billion Gateway Hudson River rail tunnel project, bringing total restored funds to $107 million as legal and political disputes over the critical infrastructure continue.
Amtrak advances construction on key D.C.–New Jersey rail tunnel replacement
Amtrak has awarded major construction contracts for the B&P Tunnel Replacement Program in Baltimore, advancing the two-mile Frederick Douglass Tunnel and modernization of 10 miles of Northeast Corridor rail infrastructure.
Court unlocks funding for Gateway tunnel as first $30 million released
Federal funding has begun flowing again to the $16-billion Gateway Hudson River tunnel project after a court ordered the release of frozen funds, with an initial $30 million payment marking the first step toward restarting construction.
Elon Musk’s ‘Tesla tunnel’ concept eyed for Universal Orlando expansion corridor
Elon Musk’s Boring Company has been selected to advance plans for a proposed underground transit loop connecting Universal Orlando’s existing parks with the upcoming Epic Universe, a project aimed at easing congestion and moving visitors below the region’s busiest tourism corridor.
Judge extends deadline in federal funding battle over Gateway tunnel construction
A federal judge has given the U.S. government more time to release billions in funding for the Hudson River Gateway tunnel project, as officials warn construction could halt and jobs be lost if financing for the critical interstate rail tunnel remains frozen.
China deploys AI-powered ‘smart brain’ system for tunnel boring machines
China has developed an AI-powered “smart brain” system for tunnel boring machines that predicts geological risks and adjusts excavation settings in real time, potentially reshaping underground infrastructure construction.
$100-million Utah water pipeline relocation project strengthens earthquake resilience
Utah crews are drilling a 1,000-ft mountain tunnel and installing seismic-resilient pipeline segments to reroute a critical aqueduct serving 1.6 million residents and reduce earthquake and landslide risk along the Wasatch Front.
Gateway sues federal government as Hudson Tunnel funding freeze threatens construction halt
The Gateway Development Commission has filed suit against the federal government, warning that withheld funding could force a halt to construction on the Hudson Tunnel Project — putting thousands of jobs and one of North America’s largest active tunneling programs at risk.
Tampa Bay Water begins tunneling on $500 million, 26-mile Hillsborough pipeline
Tampa Bay Water has begun tunneling work on a 26-mile underground pipeline designed to deliver 65 million gallons per day to southern Hillsborough County, with full completion expected by 2028.
LA Metro advances fully underground rail option for Sepulveda Transit Corridor
The Los Angeles County Metropolitan Transportation Authority has approved a fully underground heavy-rail option for the Sepulveda Transit Corridor, advancing design and environmental review for one of Southern California’s largest tunneling and transit infrastructure projects.
NUCA urges release of Hudson Tunnel funding amid federal pause
NUCA and its New Jersey chapter are calling on the Trump administration to release approved funding for the $16-billion Hudson Tunnel project, warning that delays could halt construction, disrupt jobs, and increase costs for taxpayers.
Gateway Tunnel construction faces shutdown next week as Trump withholds federal funding
The Gateway Development Commission said an immediate pause would result in roughly 1,000 job losses, while a longer shutdown could endanger more than 95,000 jobs and nearly $20 billion in economic activity.
Dallas Mill Creek Tunnel project faces multi-year delays
Dallas’ massive Mill Creek drainage tunnel—designed to reduce flooding across a third of the city—is now facing a four-to-five-year delay as construction productivity, supply chain issues, and tunneling challenges push completion into 2029. City officials say work remains within budget as crews continue lining the 5-mile underground tunnel.
DC Water lowers TBM “Mary” cutterhead for Potomac River Tunnel construction
DC Water has lowered the 21-ft-diameter cutterhead for tunnel boring machine Mary, marking a major construction milestone for the Potomac River Tunnel. The 2.4-mile underground tunnel will store combined sewer overflows and is a key component of DC Water’s Clean Rivers Project to reduce pollution in the Potomac River.
- OSHA issues 16 citations following fatal sewer confined space incident
- 27 pipeline safety violations tied to deadly Pa. chocolate factory explosion
- Contractor gas line strike triggers home explosion in Missouri
- LA recovery reports call for $650 million power line burial, major utility upgrades in Pacific Palisades
- Comprehensive microtrenching FAQ: Key insights on the Vermeer MTR516 microtrencher
- T-Mobile to expand fiber broadband infrastructure footprint with $4.9 billion Metronet acquisition
- First tunnel boring machines complete testing for Hudson Tunnel Project
- NWPX grows water infrastructure portfolio with Colorado precast facility
- Cityside launches $100 million fiber build in Corona, Calif.
- FiberLight to build 1,400-mile West Texas dark fiber network in $350 million expansion