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Staheli Trenchless Consultants

Staheli Trenchless Consultants is an engineering consulting firm based out of Lynnwood, Washington, that specializes in underground construction risk management for a variety of trenchless technologies. STC provides services that range from feasibility analysis to full design, bid services, inspection, value engineering and expert witness testimony. We are focused on trenchless construction, including tunnel boring, microtunneling, horizontal directional drilling, auger bore pipe jacking, pipe bursting, sliplining, openshield pipe jacking, and pipe ramming.

Our staff work closely on every project, providing a unique set of perspectives including engineering, geology, and inspection. Our record of successful trenchless construction projects has led us to become a well-recognized and often-requested firm for many municipalities and private companies throughout Washington, Oregon, California, Alaska and Montana and as far away as Australia and South America.

Staheli Trenchless Consultants is certified as a Women’s Business Enterprise (WBE) in both Washington and Oregon. STC is also registered with King County, WA as a Small Contractors and Suppliers (SCS) certified business.


ISTT’s 34th annual International NO-DIG Conference and Exhibition in Beijing, China
In October Kimberlie Staheli traveled to Beijing as the International Representative for NASTT and member of the Board of Directors for ISTT.
Staheli Trenchless Consultants
Staheli Trenchless Consultants


NASTT’s NO-DIG Conference 2016
As Chair of NASTT, Kimberlie Staheli was proud to kick off this year’s No-Dig Conference in Dallas, Texas. The show was a huge success with a record number of exhibitors (185!) and more than 2,000 attendees.
Staheli Trenchless Consultants


Third International Symposium
In July Kimberlie Staheli presented at the Third International Symposium on Energy Challenges and Mechanics – towards a big picture in Aberdeen, Scotland
Staheli Trenchless Consultants


Australia’s No-Dig Down Under 2015
In September Kimberlie Staheli gave the Keynote Speaker Presentation at Australia’s No-Dig Down Under 2015. Kim was also the instructor for the ASTT New Installations Course.
Staheli Trenchless Consultants


Staheli Trenchless has moved!
Come see us at our new location in Lynnwood!
Staheli Trenchless Consultants