Delve Underground

Delve Underground Delve Underground provides innovative solutions to the most challenging underground problems.

The Broadway Subway Project was recently named the 2026 Canadian Project of the Year (over $300 million) by the Tunnelli...
06/05/2026

The Broadway Subway Project was recently named the 2026 Canadian Project of the Year (over $300 million) by the Tunnelling Association of Canada. The 5.7-kilometre extension of the SkyTrain Millennium Line is one of Canada's most significant projects, delivering a vital link beneath one of Vancouver's busiest corridors.

Delve Underground is proud to have supported Transportation Investment Corporation (TICorp) and the , as part of the Owner’s Engineer Team by developing the Reference Concept Design of the tunnel, supporting the development of the Reference Concept Design for the underground stations and by providing construction surveillance services during the implementation phase.

Congratulations to the Team!

We're proud to share that Kevin Ruston, Associate Design Technologist at Delve Underground, has been selected to present...
06/01/2026

We're proud to share that Kevin Ruston, Associate Design Technologist at Delve Underground, has been selected to present at the Reality Capture User Conference, hosted by Leica Geosystems in on Thursday, June 11.

Kevin's session, "Bridging the Gap: Revolutionizing Tunnel Design with Leica Cyclone 3DR," will highlight why is using Cyclone 3DR with several successful projects and use cases.

The conference brings together professionals from across industries and around the world to discuss every aspect of reality capture. The event will have customer‑led presentations, workflow‑focused discussions, and practical training materials.

Register and learn more: https://events.bizzabo.com/805408/home

Read Kevin's full session abstract: https://events.bizzabo.com/805408/agenda/speakers/3918840

Delve Underground is heading to the ITA-AITES World Tunnel Congress 2026 (WTC2026) in Montréal, May 15–21, where the und...
05/13/2026

Delve Underground is heading to the ITA-AITES World Tunnel Congress 2026 (WTC2026) in Montréal, May 15–21, where the underground industry gathers around this year's theme: connecting communities through underground infrastructure.

Connect with us at Booth D1014, catch one of our technical presentations (lineup coming this week), and let's talk about what's next in tunneling.

Congratulations to Bade Sozer, PhD, PE, Water Market Lead – East at Delve Underground, on her selection to The Moles Cla...
05/12/2026

Congratulations to Bade Sozer, PhD, PE, Water Market Lead – East at Delve Underground, on her selection to The Moles Class of 2026!

The Moles is a national organization of heavy construction professionals and is widely recognized as one of the most prestigious organizations in the industry. Membership is earned through a rigorous nomination process supported by letters from five existing Moles and a formal review.

"The Moles recognizes people who have shaped the heavy construction industry and Bade has been doing exactly that for more than two decades,” said Victor Romero. “Her induction is a testament to her engineering excellence and her leadership at Delve Underground.”

Bade joins fellow Delve Underground Moles Bill Edgerton, John Kaplin, Dan Adams, and Victor Romero.

To learn more about Bade, visit our website: https://delveunderground.com/bio/bade-sozer

As we continue to journey through our 70-year history, we remember our third company president, John W. Nichols. A gradu...
04/30/2026

As we continue to journey through our 70-year history, we remember our third company president, John W. Nichols. A graduate of the Missouri School of Mines with a BS in , John brought 13 years of heavy construction experience to the firm before joining as a partner in 1962. His early career with a major international contractor spanned the globe, from the Pontchartrain Bridge and Chesapeake Bay Crossing, to NATO air base construction in France, and port development in Liberia.

After joining the firm, John prepared detailed analysis and estimates for projects including Oroville Dam, San Luis Dam, and the San Mateo–Hayward Bridge Substructure in California; the Yellowtail Powerplant Completion in Montana; BART's Trans-Bay Tube; the Kainji Project on the Niger River in Nigeria; the Mt. Coffee Hydroelectric Development in Liberia; and the Qadirabad–Balloki Link Canal in Pakistan.

In 1970, John established the firm's department. Under his direction, the firm handled claims for owners and contractors on landmark projects including EPCOT Center, the Golden Gate Bridge renovation, the MGM Hotel and Casino in Las Vegas, and O'Hare Airport. We continue to support contractor and owner clients with resolving construction disputes.

As the firm's third president (1985–1992), John built on the foundation established by Don Jacobs and Jim Wilton, holding fast to the principle that good engineering begins with a deep understanding of how things get built—a value that continues to define Delve Underground today.

04/22/2026

At Delve Underground, is woven into the culture of everything we do. From improving water access and cleanliness, to decreasing vehicle emissions and reducing sewer overflows, our projects are inherently beneficial to our planet’s environment.

We seek to enhance resilience to climate change and reduce carbon footprints and emissions on our projects. We promote sustainability by considering ways to improve environmental outcomes, making environmentally positive choices, and offering sustainable options to our clients. Our team includes LEED-certified personnel and Envision Sustainability Professionals (ENV SP) who help clients achieve simultaneous environmental, social, and economic outcomes.

Learn more about our commitment to sustainability on our website: https://delveunderground.com/about/sustainability

As we continue celebrating 70 years of Delve Underground, we look back at our role in shaping a new generation of subway...
04/16/2026

As we continue celebrating 70 years of Delve Underground, we look back at our role in shaping a new generation of subway systems, beginning with the Bay Area Rapid Transit system in the 1960s.

At a time when few firms had experience with new, large scale underground transit systems, Jacobs Associates recognized the opportunity for new innovations and became involved early in BART’s development. The firm supported the program with construction cost estimating using new software, alternative conceptual designs for and stations, and introduced critical path scheduling, an emerging technique that helped bring greater efficiency and coordination to complex infrastructure projects.

As construction advanced, Jacobs Associates delivered innovative excavation support designs for major stations, including Oakland City Center and Powell Street. These solutions improved safety and constructability while also significantly reducing the cost of excavation support. The team’s deep understanding of construction methods led to a series of advancements such as prefabricated internal bracing, improved strut preloading systems, and mat decking that allowed streets to reopen more quickly.

One of the most complex challenges came at Embarcadero Station, where difficult Bay Mud conditions and groundwater pressures next to San Francisco Bay posed serious risks. In response, Jacobs Associates developed a pioneering approach using diaphragm slurry walls, which was one of the early notable applications of this technique in the United States. We also developed a method for relocating and reusing heavy structural supports as excavation progressed. This innovation allowed construction to proceed efficiently while using less than half of the originally estimated steel.

These breakthroughs helped set the standard for subway construction for decades to come. Decades later, that same commitment to practical innovation and real-world constructability continues to define Delve Underground’s work on complex underground infrastructure projects around the world.

We’re at the Illinois Section AWWA WATERCON Conference in Peoria, Illinois. Come see the Delve Underground team at Booth...
04/14/2026

We’re at the Illinois Section AWWA WATERCON Conference in Peoria, Illinois. Come see the Delve Underground team at Booth 405 and learn how we’re helping advance water infrastructure solutions.

WATERCON is the largest total water conference in Illinois, bringing together utilities, consultants, manufacturers, regulators, and industry suppliers for exhibits, educational sessions, and networking. We hope to see you here.

Don’t miss Tessa O’Halloran’s presentation, “Aerial Drone Inspection of the Des Plaines River Tunnel for the City of Jol...
04/09/2026

Don’t miss Tessa O’Halloran’s presentation, “Aerial Drone Inspection of the Des Plaines River Tunnel for the City of Joliet,” on Wednesday, April 15 at 8:00 AM at next week’s WATERCON Conference.

Hosted by Illinois Section AWWA, WATERCON takes place April 14–16 in Peoria, Illinois and is the largest total water conference in the state. Be sure to stop by and connect with our team at Booth 405.

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49 Stevenson Street, #1200
San Francisco, CA
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