Concept through construction

We integrate with project teams to provide trenchless expertise with a focus on collaboration, quality, and risk mitigation.



Skilled Experience

Diana Worthen, PE

Principal Engineer & Owner

Diana specializes in delivering trenchless projects from conceptualization through construction. She has roots in the Puget Sound area, and is currently based in Portland, Oregon serving the Pacific Northwest and beyond. She is experienced in geotechnical and trenchless design, analysis, risk management, and services during construction for conveyance and energy projects throughout North America.

Diana delivers trenchless solutions for pipeline projects through conditions ranging from steep and rocky terrain, to sensitive soft clays, to loose, dry sand. With a geotechnical background, she has developed a deep understanding of trenchless design in the broad picture down to the details of the calculations.

She partners with clients throughout all stages of trenchless projects, specializing in identifying and mitigating risk while developing alternatives specifically suited to the needs of the owner and the project site with a careful attention to detail. 


Licensed in: OR, WA, ID, MT, CA, TX

Site-specific trenchless solutions

Our services include feasibility and alternatives analysis, identifying risks and implementing risk mitigation measures, geotechnical investigation, developing contract drawings and specifications, and supporting construction through advising on contractor selection, reviewing submittals, and on-site inspection.

We are certified in Oregon (COBID) as WBE/ESB #13589, and in Washington (OMWBE) as WBE #W2F0027919.