Undergrounding
Excavation begins for Ontario Line’s first downtown subway tunnels
Excavation has started near Exhibition Station for the Ontario Line’s tunnel boring machine (TBM) launch site. This 16-meter-deep shaft will mark the starting point for two TBMs that will create twin tunnels spanning approximately six kilometers—the first downtown subway tunnel project in Toronto in over 60 years.
Gigapower’s Arizona fiber rollout linked to infrastructure damage, CWA report says
In Mesa, Arizona, where Gigapower began fiber deployment in early 2023, subcontractors have reportedly caused over 40 underground utility hits, including damages to electric, gas, water, and telecommunications lines, totaling more than $135,000 in repairs.
HDD Reunion, Hall of Fame Class of ’25 announced
Underground Infrastructure magazine and the Horizontal Directional Drilling Association, in conjunction with the HDD Reunion Organization, are proud to announce the HDD Hall of Fame Class of 2025. The honorees will be inducted during the HDD Reunion on Wednesday, March 5.
$50 million investment in Mojave groundwater project in California expands 30 million acre-feet storage
(UI) — Cadiz Inc. and the Lytton Rancheria of California have signed a Letter of Intent for Lytton to invest up to $50 million in the company's groundwater banking project in the Mojave Desert.
PG&E buries over 800 miles of powerlines in high wildfire-risk areas
(UI) — Pacific Gas and Electric Company (PG&E) has undergrounded more than 800 miles of powerlines since launching its wildfire safety initiative in 2021.
CGA report underscores progress, challenges of buried utilities damage prevention
The Common Ground Alliance (CGA), the national nonprofit trade association dedicated to protecting underground utility lines, people who dig near them and their communities, recently published its 2023 Damage Information Reporting Tool (DIRT) Report.
CGA opens registration for 25th annual conference in Orlando, Florida
The conference will bring together industry leaders to reflect on CGA’s quarter-century legacy and explore future innovations in damage prevention.
Worker deaths decline amid OSHA crackdown on high-risk trench and fall hazards
According to preliminary data, fatalities in key high-risk areas like trench collapses and falls, which are among the leading causes of death for construction workers, have notably declined.
Lynchburg, Va., breaks ground on largest-ever Blackwater CSO tunnel project
On Oct. 29, the City of Lynchburg broke ground on the Blackwater CSO Tunnel Project, a milestone in local infrastructure and the largest capital improvement in the city’s history. Known as LYHBeyond, the project aims to significantly reduce combined sewer overflows (CSOs) and safeguard the city’s waterways.
California's Anderson Dam tunnel project marks milestone as completion nears
To complete the tunnel’s last 347 feet, crews used a specialized micro-tunnel boring machine, maneuvering it 30 feet beneath the reservoir’s surface. After the boring was done, divers and construction teams carefully removed the machine from the tunnel’s endpoint using a large crane.
Editor’s Log: When money has no limits
Power generation is rapidly emerging across North America – indeed, the world – as the primary factor that, in the near future, will impact not only our economy, but further development of modern civilization.
Tunnel boring machine ‘Clack-A-Mole’ nears one-third completion in Oregon outfall project
As of Sept. 24, Clack-A-Mole has mined 770 feet of the total 2,370-foot tunnel, reaching 32% completion. Clack-A-Mole, weighing a massive 225,000 pounds, is currently averaging about 32 feet of progress per day as it digs a path toward the river.
Federal charges filed against contractors for failing to remove lead pipes in Newark, N.J.
Two officials from a construction company contracted to remove lead pipes in Newark have been charged with fraud, accused of deceiving the city by leaving the hazardous pipes in place while falsely claiming to have replaced them.
Energy giants propose new transmission lines across PJM states
Dominion Energy Virginia, American Electric Power and FirstEnergy Corp. have entered into an innovative joint planning agreement to propose several new regional electric transmission projects across multiple states within the PJM footprint.
Newburgh, N.Y., completes $31 million sewer project using microtunneling for underground pipeline
The project installed 8,700 feet of new sewer pipes and used microtunneling for over 2,000 feet of underground pipeline to improve capacity and reduce pollution in the Hudson River.
Sanitary sewer line replacement scheduled for Bunker Hill and Greenbay in Houston
All work will occur underground or within the city’s Right of Way (ROW), with no expected need to access private property unless necessary, and residents will receive advance notice if this happens.
Atlas project wins ASCE Project of the Year for underground water tank in Idaho
Atlas Technical Consultants Inc. has been awarded the American Society of Civil Engineers (ASCE) Southern Idaho Section's Project of the Year for the Whistle Pig Tank development, recognized in the category for projects under $10 million.
Asheville, N.C., faces weeks-long recovery after Tropical Storm Helene damages water system
Asheville’s water system suffered severe damage from Tropical Storm Helene, disrupting treatment facilities and distribution lines. Washed-out roads are complicating repair efforts, with city officials warning it may take weeks to fully restore service to the area’s 94,000 residents.
Underground fire disrupts fiber optic networks, closes key Baltimore facilities
An underground fire in downtown Baltimore led to a manhole explosion and disrupted critical fiber optic networks over the weekend, affecting thousands.
Nevada County approves PG&E underground utility project for Red Dog Road
The Nevada County Board of Supervisors in California has approved the creation of the Red Dog Road Underground Utilities District, a project aimed at improving wildfire safety by moving utilities underground.
Construction mishap releases thousands of gallons of sewage into Washington’s Lake Whatcom
A construction incident on Sept. 11 led to a sewage leak into Lake Whatcom, with estimates ranging between 25,000 and 50,000 gallons of raw sewage spilling into the water.
San Diego sewer upgrade nears completion, potholing to confirm underground utilities
Upcoming work will replace sewer mains and laterals on three streets in San Diego. Crews will also conduct potholing to verify the locations of underground pipes and utility lines.
Duke Energy undergrounds 48% of Florida power lines with plans to expand as hurricane season peaks
Approximately 48% of Duke Energy Florida's primary power lines are underground and better protected from wind damage. The company will continue to install underground cable in areas that are identified as the most outage-prone areas.
Explosion in underground PG&E vault leaves one dead in Richmond, Calif.
A man was found electrocuted inside an underground PG&E utility vault in Richmond, California, last month after a series of explosions. The incident highlights the dangers associated with unauthorized access to these high-risk underground utility spaces.
Jasper, Ind., to begin Phase II of downtown revitalization
The city of Jasper, Indiana, is set to begin Phase II of its Downtown Revitalization Project, which includes critical upgrades to the underground infrastructure.
Siksika Nation selects Cross Cut Directional Boring for fiber optic rollout
Cross Cut Directional Boring LTD has been selected as the contractor for the project, which includes building a backbone network and installing residential service cables. Vacuum excavator trucks will be used to locate existing underground utilities.
22 Years of advancing research in underground infrastructure and trenchless technologies: CUIRE's commitment
It is hard to believe that 22 years have passed since the Center for Underground Infrastructure Research and Education (CUIRE) was established. In 2006, the first trenchless technology conference was held at the University of Texas at Arlington (UTA).
PG&E resumes underground power line work in California’s Plumas County
Pacific Gas and Electric Company (PG&E) has resumed its efforts to bury power lines in Plumas County, California, after work was paused due to the Park Fire.
Utah’s Park City Council greenlights $7 million project to bury power lines in Bonanza Park
Park City is advancing its long-awaited initiative to bury power lines in the Bonanza Park area, paving the way for future development in the district.
International report: Germany accelerates plans for energy development
Germany plans to actively accelerate the development and modernization of its underground energy infrastructure in the near future.
- OSHA cites Florida contractors for trench safety violations at sewer and excavation sites
- Cadiz to reuse steel from terminated Keystone XL pipeline for California groundwater project
- Lynchburg, Va., breaks ground on largest-ever Blackwater CSO tunnel project
- Biden-Harris administration invests $849 million in aging water infrastructure, drought resilience
- The EPA announces $6.2 billion in funding for Iowa and Kansas water infrastructure