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Featured Stories

Tunnel Lining Design, Part 2: Analysis Considerations
Contributing Author
October 8, 2025
Read Article
Featured Stories
Demystifying Surety in the North American Underground Construction Market – Part 1
October 6, 2025
Featured Stories clean slurry technology
Q&A with Clean Slurry Technology
May 15, 2024
Featured Stories rib and lagging tunneling shaft
Evaluating Differing Site Conditions For A Microtunneling Project (Part 4)
May 9, 2024
Featured Stories San Francisco skyline
Alameda Street Wet Weather Conveyance Tunnel in San Francisco
May 1, 2024
Featured Stories Manchester, New Hampshire
Tunneling for Cleaner Waterways

Manchester’s Cemetery Brook Drain Tunnel Project Aims to Improve Water Quality in Merrimack River...

April 25, 2024
Featured Stories Akkerman microtunneling project
Avoiding Differing Site Conditions for a Microtunneling Project (Part 3)

Avoiding Differing Site Conditions for a Microtunneling Project (Part 3)...

March 26, 2024
Featured Stories Tennessee tunnel rehab
Spray-Applied Waterproofing

Tennessee Tunnel Turns to Spray-Lock Concrete Protection for Rehab...

March 21, 2024
Featured Stories the company’s recent anniversary celebration in Brownsdale, Minnesota.
Akkerman Celebrates 50 Years of Trenchless Construction Excellence

Akkerman Inc., a leading manufacturer and supplier of tunneling and trenchless construction equipment, celebrated its 50...

March 20, 2024
Featured Stories Newton Reservoir tunnel and water connections project
Avoiding Differing Site Conditions For A Microtunneling Project (Part 2)...

Avoiding Differing Site Conditions For A Microtunneling Project (Part 2) – The Contractor’s Responsibilities...

March 19, 2024
Featured Stories Bradshaw
Microtunneling Vertical Curves: New Solutions for Utility Installations

Developments in the trenchless construction industry are resulting in new methods to install critical utilities through ...

March 11, 2024
Featured Stories
Leveraging Data for Tunneling

How Technology Is Improving Design, Construction and Management In modern tunneling applications, data is everything, es...

March 7, 2024
Featured Stories Brokk
Out of Sight, But Not Out of Mind

How a Civil Contractor Used Brokk Demolition Robots for Infrastructure Repair...

March 7, 2024
Featured Stories Contract Image
Early Contractor Involvement: Rethinking and Recalibrating Delivery Methods for Subsurface...

Introduction For more than half a century, the underground design and construction industry has been challenged to devel...

October 26, 2023
Featured Stories Microtunneling Project
Avoiding Differing Site Conditions for a Microtunneling Project – Part...

The primary purpose of this paper is to discuss how the Differing Site Conditions (DSC) clause affects all aspects of de...

October 25, 2023
Featured Stories Microtunneling the Harbour Island Force Main
Microtunneling the Harbour Island Force Main

Vadnais recently completed the Harbour Island Force Main microtunneling project, an essential pipeline in the City of Ta...

October 25, 2023
Featured Stories The program will improve vehicular transportation
Tunneling for an Improved Austin

CapEx Drainage Tunnel Sets Stage for Historic Highway Project The I-35 Capital Express (CapEx) Central project in Austin...

October 16, 2023
Featured Stories McGill Station in Montreal Financial District
Underground Segment of Montreal Réseau Express Métropolitain (REM)

The Réseau Express Métropolitain (REM) is an electric and fully automated, light-rail transit network designed to faci...

October 13, 2023
Featured Stories Walkthrough of the completed tunnel
Record-setting Microtunnel Completed in Calgary

The largest diameter microtunnel in North America was successfully completed in December 2022 as part of the Northwest I...

July 31, 2023
Featured Stories Hugh L Carey Brooklyn Battery Tunnel
Rehabilitation of the Hugh L. Carey and Queens Midtown Tunnels...

The Triborough Bridge and Tunnel Authority (TBTA) is conducting a comprehensive rehabilitation and systems update of the...

June 27, 2023
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