Do it right.
Controlled processes, qualified personnel, and documented inspection support consistent fabrication.
About J.A. McMahon
Generations of steel fabrication experience.
Founded in 1945, J.A. McMahon is a family business built around quality workmanship, reliable schedules, and long-term customer relationships.
Our Story
Established experience with a forward-looking approach.
J.A. McMahon fabricates structural and miscellaneous steel for commercial structures, industrial facilities, institutional work, and simple bridges.
Our project teams work with contractors, owners, designers, vendors, inspectors, and erectors to solve issues early and move approved work through detailing, procurement, fabrication, and delivery.
The company continues to invest in automated equipment, quality systems, and people while maintaining the accountability of a family-owned fabricator.
What Guides Us
Partnership is part of the product.
Our reputation is shaped by how we communicate, coordinate, fabricate, and respond when project conditions change.
Protect the sequence.
Planning and early issue identification help keep approvals, procurement, fabrication, and delivery aligned.
Communicate clearly.
Professional integrity and proactive coordination are essential to long-term customer relationships.
Community & Industry
Supporting the next generation of structural professionals.
J.A. McMahon established the Francis P. Conroy Scholarship in Civil Engineering at Youngstown State University and has supported student steel bridge activities and local industry organizations.