Underground Construction
Griffolyn pre-liners improve reliability in trenchless pipe lining
Griffolyn reinforced pre-liners offer added protection and reliability during CIPP trenchless pipe rehabilitation, helping prevent resin washout, liner buckling, and installation delays in water and sewer infrastructure projects.
MTA advances $7.7 billion East Harlem subway tunnel project with $186 million oversight contract
The MTA has approved a $186.6 million contract with AECOM-HNTB to oversee tunneling and systems work for Phase 2 of the Second Avenue Subway extension, advancing one of New York’s largest underground infrastructure projects into East Harlem.
Willamette River goes sewer overflow-free thanks to Big Pipe system in Portland, Ore.
Portland recently marked a major environmental milestone: one full year without a combined sewer overflow (CSO) into the Willamette River, a testament to the long-term success of the city’s $1.4 billion Big Pipe Project.
ASCE gives U.S. infrastructure best grade yet—stormwater, wastewater and energy still near failing
The American Society of Civil Engineers gave U.S. infrastructure its highest grade since 1998, but critical systems like stormwater, wastewater, and energy remain near failing, according to the 2025 Report Card.
Lumos to install over 1,200 miles of fiber optic, expanding into Indiana
Lumos has announced its inaugural expansion into Indiana, with plans to build over 1,200 miles of fiber optic infrastructure aimed at providing 100% fiber optic internet service to homes and small businesses in the area.
Los Alamos, N.M., hit by second network outage after fiber line breaks during construction
For the second time in a week, Los Alamos, N.M., experienced a network outage on March 17 after construction crews accidentally severed fiber lines along NM-4.
Worm-like robot burrows underground to cut power line installation costs
The innovation, known as a "peristaltic conduit," mimics the segmented movement of earthworms to propel itself through the soil with minimal disruption to existing infrastructure.
Fairfield, Conn., to begin $31 million East Trunk sewer line replacement in May
A long-planned replacement of the East Trunk sewer line is set to begin in May 2025, with construction expected to last about 18 months. The project will replace aging sewer infrastructure to improve wastewater system reliability, reduce maintenance costs, and prevent future disruptions.
Williams Cos. highlights underground infrastructure’s role in surging natural gas demand at UIC 2025
At the Underground Infrastructure Conference on March 5, Glenn Koch, Vice President-Project Execution at Williams Co., addressed the growing demand for natural gas and the role underground infrastructure will play in meeting energy needs.
Williams highlights infrastructure’s role in surging gas demand at UIC 2025
At UIC 2025, Williams Co. VP Glenn Koch outlined how underground infrastructure and natural gas storage are critical to meeting surging U.S. energy demand, driven by data centers and peak-day power needs.
Two workers killed in Maryland trench collapse during home renovation
Two construction workers were killed on Feb. 28 after a trench collapsed while they were working on a home renovation project in Catonsville, Maryland, fire officials confirmed.
Cadiz taps Stantec to lead engineering for $800 million Mojave Groundwater Bank
Once completed, the project will provide 2.5 million acre-feet of new water supply and 1 million acre-feet of underground storage. A 350-mile pipeline network will connect the system to the Colorado River and California Aqueducts, making it the largest new water infrastructure project in the Southwest.
New Jersey American Water advances lead pipe replacements, exceeds 12,000 replacements
The utility remains on track to meet a 2021 New Jersey law requiring the removal of both utility-owned and customer-owned lead and galvanized steel service lines by 2031.
Turning awareness into action: 811 call centers
Despite widespread awareness of 811 requirements, damage to underground utilities remains high. This article urges contractors to consistently use state OneCall centers and provides a full directory for safe digging compliance.
Work progresses on $66 million upgrade to San Diego’s first aqueduct
The San Diego County Water Authority has reached the halfway point on a $66 million project to extend the life of the historic First Aqueduct and maintain reliable water delivery across the region.
Sewer upgrade to begin under Nautical Mile in St. Clair Shores, Mich.
The project will involve the installation of a new sewer line beneath Jefferson Avenue, aiming to reduce sewer discharges into Lake St. Clair.
Smelly Mel’s, Sewer Rat Plumbing fined nearly $530,000 after San Mateo, Calif., trench collapse
California workplace safety regulators have fined Smelly Mel’s Plumbing and Sewer Rat Plumbing a combined $529,640 for safety violations linked to a trench collapse that seriously injured a construction worker in San Mateo on Aug. 1, 2024.
Newsom announces key permit for Delta Conveyance Project, boosting water infrastructure
The Delta Conveyance Project, aimed at upgrading the State Water Project, has received an essential Incidental Take Permit, a necessary approval to move forward with the initiative.
Vortex launches water division to tackle aging infrastructure
Vortex Companies has launched Vortex Water, a new division focused on water infrastructure rehabilitation. The move expands the company's trenchless solutions beyond sewer and industrial systems to address aging water pipelines with advanced materials, liners, and trenchless technologies.
Consor acquires Murfee Engineering, strengthening water infrastructure capabilities
Consor Engineering has acquired Murfee Engineering Company (MEC), a Texas-based civil engineering firm specializing in water and wastewater. Consor has nearly five decades of experience delivering solutions to complex projects for government agencies, private clients and special utility and conservation districts in Texas.
Fiber broadband deployment costs stabilizing, report finds
The Fiber Broadband Association’s latest Fiber Deployment Cost Annual Report, conducted by Cartesian, shows that broadband service providers expect fiber deployment costs to remain steady or rise slightly—less than 10%—compared to 2024. This marks an improvement from the previous year’s study, which reported steeper cost increases.
Eversource breaks ground on nation’s largest underground electrical substation in Cambridge, Mass.
Eversource has begun construction on the nation’s largest underground electrical substation in Cambridge, Mass. The 35,000-square-foot facility, located 105 feet below a new public green space, will help meet growing electricity demand and upgrade grid reliability.
Frontier-Kemper JV lands $1.2 billion contract to begin construction on Hudson Tunnel Project
The Gateway Development Commission (GDC) has awarded a $1.18 billion contract for the Manhattan Tunnel Project to Frontier-Kemper-Tutor-Perini JV and authorized the notice to proceed with construction. Completion is anticipated in 2029 for this portion of the Hudson Tunnel Project (HTP).
Special tracks, training & competition headline UIC 2025
We are gearing up for Underground Infrastructure magazine’s 30th Underground Infrastructure Conference (UIC), March 4-6 in Houston. Attend UIC and be part of a transformative event designed to inspire, educate, and connect infrastructure professions across the industry. From groundbreaking sessions to exclusive networking opportunities, this year’s conference promises an unforgettable experience for everyone involved.
Smuggling tunnel equipped with ventilation discovered in El Paso storm drain system
U.S. Border Patrol agents, in collaboration with Homeland Security Investigations (HSI), uncovered a sophisticated man-made tunnel on Jan. 9 that connected Ciudad Juárez, Mexico, to the El Paso storm drain system.
OSHA cites Glenburn, Maine contractor in fatal trench collapse at Brownville worksite
While installing storm drainage pipes at a Brownville worksite, a retaining wall collapsed, killing one worker and injuring another. OSHA cited Patriot Paving Group LLC for multiple safety violations, including failing to brace the wall and remove workers from the hazardous trench.
Hudson Tunnel Project utility relocation phase more than 50% complete, GDC says
The Gateway Development Commission (GDC) announced 50% completion of the Tonnelle Avenue Bridge and Utility Relocation Project. This work marks an essential phase of the Hudson Tunnel Project as it will create an access point for launching the Tunnel Boring Machines.
Celebrating 30 years: Explore the next era of UIC
Imagine a conference where innovative solutions, cutting-edge technology, and industry pioneers come together under one roof to shape the future of underground infrastructure. That’s exactly what you’ll find at the 30th Underground Infrastructure Conference (UIC), Tuesday, March 4, to Thursday, March 6, 2025, at Houston’s George R. Brown Convention Center.
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.
- Intrepid Fiber breaks ground on fiber optic network in Superior, Colo.
- Excavator collides with I-95 overpass in Henrico, Va., causing multi-vehicle crash
- Shrewsbury, Mass., expands sewer inspections and cleaning efforts
- Construction worker killed in trench collapse near Prosperity, S.C.
- Two workers rescued after hours trapped in Mich. trench collapse
- Texas contractor penalized by OSHA for repeated trench safety violations
- Final construction phase kicks off for Indianapolis deep rock tunnel
- WES tunnel boring machine retrieved from Oregon river after seven-month project
- Illinois overhauls Peoples Gas pipeline program, mandates focus on high-risk pipes
- Ameren Illinois to invest $140 million in natural gas pipeline replacement program