Spotlight On: Staheli Trenchless Consultants

November 8, 2017 by NASTT Staff


We are proud to spotlight NASTT’s No-Dig Show Silver Sponsor and Corporate Member, 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. STC is focused on trenchless construction, including tunnel boring, microtunneling, horizontal directional drilling, auger bore pipe jacking, pipe bursting, sliplining, openshield pipe jacking, and pipe ramming.

STC staff work closely on every project, providing a unique set of perspectives including engineering, geology, and inspection. Their record of successful trenchless construction projects has led them 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.


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