"This Company is certainly 5 star worthy. Bruce and his team do a great job, and the Customer Service is Top Notch. I have enjoyed our relationship with Zimmerman."
- AISC – BU, Certified Building Fabricator
- AISC – IBR, Certified Bridge Fabricator, Intermediate
- AISC – CBR, Major Steel Bridges
- AISC – FCE, Fracture Critical Endorsement
- AISC – SPE-P1, Sophisticated Paint Endorsement