Mass timber construction overview
Wide timber frame detail
Construction site overview
Mass timber building exterior

About Us

Building the future with Ironworker precision

Our Heritage

About the Union

The International Association of Bridge, Structural, Ornamental and Reinforcing Iron Workers, AFL-CIO (IW), is a proud trade association whose beginnings go back to the 1890s. The IW represents 120,000 members in North America. Members of our union have worked on nearly every major construction project you can think of – the Golden Gate Bridge, the Sears Tower, the St. Louis Arch, the Oil Sands Plant Expansion in Alberta, the World Trade Center and Freedom Tower.

We represent ironworkers who work on bridges, structural steel, ornamental, architectural and miscellaneous metals, rebar and in shops. Across North America, we build. And we build safely and skillfully, getting the job done right and on time.

We provide many benefits and support for our members. These benefits include the advantage of working under a collective bargaining agreement that brings bigger paychecks, better health and retirement benefits, more secure jobs and safe working conditions. Explore our site and find out how ironworkers are building the infrastructure of North America!

Ironworkers on mass timber beams
Clean timber interior ceiling

No One Understands Structure Like an Ironworker.

Structural Strength. Superior Safety.

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Featured Projects

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Luxury Design

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Satisfied Clients

Trusted Partners

Albina
10K Craft
AECOM
Architectural Elements
Coast Crane
Correia

The Leading Network of Mass Timber Experts.

The Industrialized Wood Mass Timber (IWMT) platform connects signatory Ironworker contractors, designers, and manufacturers to accelerate the adoption of sustainable construction. We are dedicated to providing the trusted connections and resources needed for your next project.

Find Qualified Mass Timber Suppliers
Connect with an IW Mass Timber Expert
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Contractors

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Projects

Featured Projects

Bellingham Public Schools Administrative Offices

Bellingham Public Schools Administrative Offices

Bellingham, Washington 98226

Santa Barbara Police Station

Santa Barbara Police Station

215 E Figueroa St, Santa Barbara, CA 93101

T3 Mount Pleasant

T3 Mount Pleasant

123 East 6th Avenue, Vancouver, BC, CA V5T 1J6

Meet Our Team

Tom Baun

Tom Baun

Special Project Director

Joe Sorensen

Joe Sorensen

Zach Gorman

Zach Gorman

John Cangey

John Cangey

Bert Royer

Bert Royer

Why Ironworkers?

The difference between generic labor and specialized expertise.

Ironworkers
Others
Structural Assembly Expertise
Crane & Rigging Certified
OSHA Fall Protection Trained
Union Benefits & Safety Standards
Mass Timber Specific Training
Steel-to-Timber Connection Experience

What Our Partners Say

Genisa Iron delivered exceptional performance as a subcontractor on the erection work at the Burbank Airport project. Their team brought a high level of skill, professionalism, and precision to every phase of the job — from planning and coordination to execution in the field.
EG

Emma Garvey

Project Manager

Projects of the Year

6

Commercial

Projects

5

Industrial

Projects

7

Educational

Projects