STAHELI Trenchless Consultants

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 fro many municipalities and private companies throughout Washington, Oregon, California, Alaska and Montana ad 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.