TRI-STATE ENGINEERING

Tri-state Engineering is a structural engineering firm that has been providing Woodinville services such as structural testing, stress analysis and more since the '90s. In May of 2008, a property owner hired them to do a deck project using a permit acquired from the city of Mercer Island; they completed a sprinkler system installation in October of 2006 using a permit also obtained from the city of Mercer Island.