Tunneling
Curved tunnel solves San Antonio sewer project's toughest challenge
Creative engineering, trenchless construction and stakeholder coordination helped crews deliver a major sewer upgrade through one of San Antonio's most environmentally sensitive corridors.
DC Water breaks ground on final Clean Rivers tunnel
DC Water has broken ground on the Piney Branch Tunnel, the final major component of its Clean Rivers Project. The 4.2-million-gallon tunnel is expected to reduce combined sewer overflows into Piney Branch by 96% and be completed in 2029.
Canada commits $3 billion to Fraser River Tunnel replacement
Canada has committed up to C$3 billion toward British Columbia's C$8.5 billion Fraser River Tunnel Project as procurement advances and early construction work continues ahead of major tunnel construction in 2027.
Federal judge orders funding restored for $16-billion Gateway Tunnel
A federal judge has ordered the Trump administration to permanently restore funding for the $16 billion Gateway Tunnel project, ruling that the suspension of federal reimbursements violated federal law. Construction on the Hudson River rail tunnel resumed after a temporary shutdown earlier this year.
Worker killed in foundation tunnel collapse near Dallas; OSHA investigating
A construction worker was killed after a tunnel beneath an apartment building foundation collapsed near Coppell, Texas. Emergency crews conducted a complex rescue operation, and OSHA has launched an investigation into the fatal incident.
$104 million Lynchburg, Va., tunnel nears breakthrough beneath Blackwater Creek
Lynchburg, Va., is nearing completion of a 4,744-foot sewer tunnel beneath Blackwater Creek that will store millions of gallons of stormwater and wastewater, helping reduce combined sewer overflows by 98%.
$4.15-billion George Massey Tunnel replacement project retendered in Canada
Canada is restructuring delivery of the $4.15 billion George Massey Tunnel replacement project, moving to a multi-package procurement approach while continuing utility relocations and early construction activities ahead of major tunneling work.
The Boring Company expands tunneling operations across three cities
The Boring Company is simultaneously operating tunnel boring machines in Las Vegas, Nashville and Bastrop, Texas, highlighting the company's growing footprint and ability to work in diverse ground conditions.
$7 billion Second Avenue Subway project advances with TBM launch
New York officials have broken ground on a major construction phase of the Second Avenue Subway expansion, a $7 billion project that will extend service into East Harlem and serve more than 100,000 daily riders.
$100-million sewer tunnel project aims to eliminate storm overflows
Construction is underway on Charleston Water System's $100 million-plus West Ashley sewer tunnel extension, a major wastewater infrastructure project designed to reduce sanitary sewer overflows and improve system reliability during heavy storms.
$1 billion Ohio River Tunnel project awarded in Pittsburgh
A joint venture between Lane Construction and Brayman Construction has won a $1 billion contract to build Pittsburgh’s Ohio River Tunnel, a key component of ALCOSAN’s long-term sewer overflow reduction program.
Gateway awards $712 million Hudson Tunnel Project contract
The Gateway Development Commission has awarded a $711.7 million contract for a key Hudson Tunnel Project segment that will connect the future rail tunnel to existing Northeast Corridor tracks in New Jersey.
Lynchburg officials tour Blackwater sewer tunnel with 550 feet left to excavate
Construction crews are approaching a major milestone on Lynchburg’s Blackwater CSO Tunnel, a $104 million project designed to dramatically reduce sewer overflows into local waterways.
OSHA weighs safety variance for New Hampshire sewer tunnel project
OSHA is reviewing updated decompression procedures for workers on a New Hampshire sewer tunnel project, reflecting the evolution of safety practices for modern tunnel boring operations.
Louisville tunnel project proposal gains renewed attention after funding debate
Kentucky Venues is renewing efforts to advance a proposed underground tunnel project connecting downtown Louisville to the Kentucky Exposition Center as debate continues over funding for a feasibility study.
Contractor challenges $100-million irrigation tunnel project award in federal lawsuit
A contractor has filed a federal lawsuit challenging the procurement process behind a more than $100-million irrigation tunnel rehabilitation project tied to the Fort Laramie Canal system in Wyoming and Nebraska.
California renews push for Delta tunnel, statewide water infrastructure projects
California is renewing its push for the Delta tunnel and other major water infrastructure projects as debates continue over cost, environmental impacts and long-term water reliability.
Skanska JV lands $1.29 billion Hudson River tunnel contract in N.Y.
A Skanska-led joint venture has secured a $1.29 billion contract to construct twin rail tunnels beneath the Hudson River, including boring, lining and underground stabilization work.
Court ruling blocks financing path for California Delta tunnel project
A California court decision has halted the state’s attempt to secure bond financing for the Delta tunnel project, adding uncertainty to the multibillion-dollar water infrastructure plan.
Final Lake Erie sewer tunnel project set to begin after decades-long $3 billion effort
Construction is set to begin on the final tunnel in a multibillion-dollar Northeast Ohio project aimed at reducing sewage overflows into Lake Erie by hundreds of millions of gallons annually.
Ontario Line tunneling begins in Toronto, marking major underground milestone
Tunneling has started on Toronto’s Ontario Line subway project, a 9.7-mile underground transit system that marks a major milestone in large-scale urban infrastructure construction.
Hudson Tunnel project prepares to launch TBM excavation in New Jersey
The Hudson Tunnel project is nearing a major milestone as crews prepare to launch massive TBMs in New Jersey. The next phase will push excavation through the Palisades and under the Hudson River as part of a critical U.S. rail infrastructure build.
Parsons tapped for construction management on NYC’s Newtown Creek CSO tunnel
Parsons has been selected to help deliver New York City’s Newtown Creek CSO tunnel, a major wastewater infrastructure project aimed at reducing sewer overflows and improving water quality. The long-term program underscores continued investment in large-scale urban tunnel systems.
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.
- Oil pipeline struck during fiber optic construction spills into L.A. storm drains
- Utility strike at center of Dallas explosion investigation
- Gas line strike destroys three homes in Ohio neighborhood
- $1 billion Ohio River Tunnel project awarded in Pittsburgh
- Las Vegas advances multibillion-dollar water pipeline expansion