Delve Underground is a leader in heavy civil engineering, serving the transportation, water, wastewater, and energy industries. Specializing in tunnel design, we provide innovative solutions to the most challenging underground problems. We offer comprehensive design, construction management, and dispute resolution capabilities. Our expertise includes civil, structural, and geotechnical engineering. Founded in 1954, as Jacobs Associates, Delve Underground is an employee-owned firm with 25 offices and 350 team members throughout the United States, Canada, Australia, and New Zealand. 

Construction

Engineering

Transportation

Water

Delve Underground

Delve Underground's headquarters in Seattle, WA, United States

Dan Adams

John Kaplin

Gregg Davidson

Darlene Brown

Engineering and Project Management

Design and Development

Marketing and Communications

Finance and Accounting

Leadership Team

Human Resources and Administration

Delve Underground

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Teams