Triax Engineering, LLC Share: Architecture/EngineeringDBEEBEM/WBESBE-DenverSBE-RTD Triax Engineering, LLC Visit Website Request Info 5371 Magnolia Street Commerce City, CO 80022 (720) 230-1931 (720) 230-5471 (fax) About Map About Services: - Geotechnical Engineering - Materials Testing & Inspections - Environmental Consulting What's Nearby? Distance: 5 10 15 20 25 50 mi.