Welcome to J. A. McMahon, Inc.

For 70 years our company has specialized in fabricating quality AISC certified structural and miscellaneous steel for commercial structures, industrial facilities, and simple bridges. J. A. McMahon, Inc. has invested in the equipment and personnel necessary to be a leader in structural steel fabrication. Our experienced staff, which includes a C.W.I., a LEED A.P., and a registered P.E. make us a great partner for all your structural fabrication. We strive to build relationships with our customers and vendors in order to work with you on a continuing basis, whether it's a small job or a large project.

Fabricating steel is our business, doing it better than everyone else is our goal.

From concept to completion, custom fabrication is our specialty. Our goal is to meet your special requirements for projects by fulfilling a broad range of structural needs including miscellaneous steel, non-ferrous materials, and steel erection services as requested.

High-Quality, No Compromises. You'll find that our professional integrity, pursuit of excellence, and innovative thinking is the added value you are looking for on your projects.

100% Customer Satisfaction

J. A. McMahon, Inc. builds lasting partnerships through:

  • Quality Workmanship
  • Exceptional Service
  • Competitive Pricing
  • Value Engineering
  • Design Assistance