About Us:

CNA Consulting Engineers is an award-winning professional civil and mining engineering firm that provides services for projects built in, on, or using soil and rock materials. We have a 40-year track record of successful projects and satisfied clients on the local, national and international communities. We routinely assist clients with all phases of the project life cycle – from conceptualization through maintenance and rehabilitation. Projects include, but are not limited to: work on underground transportation facilities and occupied underground spaces, utility tunnels, storm tunnels, sanitary tunnels, infrastructure evaluation, geostructural research and evaluation.
CNA is a small business, certified as a DBE/WBE with: University of Minnesota, State of Minnesota, City of St. Paul, Ramsey County and Hennepin County 
Our firm also specializes in the design of inhabited underground space and frequently take the same role for underground projects that architects do for above-ground projects – the role of project leader and coordinator. We often team with other firms to provide mechanical, electrical, fire protection, fire and life safety, outfitting and similar design services.


  • Silver Creek Cliff Highway Tunnel
  • River Creek Cliff Highway Tunnel
  • (MLAC) Minnesota Library Access Center
  • (PCI) Precast/Prestressed Concrete Institution
  • Minnesota Society of Professional Engineers
  • MINOS Far Detectector Laboratory