Staheli Trenchless Consultants, in Lynnwood, WA

Staheli Trenchless Consultants is an engineering consulting firm headquartered in Lynnwood, Washington.

The firm specializes in underground construction risk management for various trenchless technologies, including tunnel boring, microtunneling, horizontal directional drilling, auger bore pipe jacking, pipe bursting, sliplining, open shield pipe jacking, and pipe ramming.

STC provides services that range from feasibility analysis to complete design, bid services, inspection, value engineering, and expert witness testimony.

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