How to Become an Ironworker: Structural vs. Reinforcing

If you are figuring out how to become an ironworker, the first surprise is that "ironworker" covers several distinct jobs. The connector bolting beams 30 stories up, the rod buster tying rebar in a bridge deck, the ornamental hand setting stairs and railings, and the rigger moving a pressure vessel into place all belong to the same union and often the same apprenticeship. They do not have the same day, though, or the same job outlook.

This guide breaks down the specialties, the BLS pay and projections for each, what a union apprenticeship asks of you, and how to choose a lane.

The Branches of Ironwork

The BLS Occupational Outlook Handbook splits the occupation into two detailed categories, and union training programs add more. Ironworkers Local 44 in Cincinnati, for example, describes its apprenticeship as covering structural steel, reinforcing steel, ornamental work, rigging, and welding and cutting.

• Structural. Erecting and joining girders, columns and other steel members into a building or bridge frame. Some structural workers also assemble precut metal buildings, put together cranes and derricks, or set precast walls.
• Reinforcing (rod busting). Placing and securing steel bars or mesh inside concrete forms so the concrete has tensile strength. BLS notes these workers are often called rod busters.
• Ornamental and architectural. Installing finished metalwork such as stairways, catwalks, grating, screens and siding, according to Local 44.
• Rigging and machinery moving. Rigging and setting heavy machinery, pressure vessels, storage tanks and materials.
• Welding and cutting. Used across all of the above. Local 44 trains apprentices on several types of steel and alloy cutting.

Common tasks across branches include reading blueprints, unloading and stacking steel for slinging, signaling crane operators, cutting and bending with torches and shears, aligning members with plumb bobs, lasers and levels, connecting pieces with bolts, wire or welds, and installing metal decking. Some ironworkers also work on demolition and rehabilitation of older structures.

Structural vs. Reinforcing Ironworker: Side by Side

Source: BLS Occupational Outlook Handbook, May 2025 wage data and 2025 to 2035 projections.

What the table tells you: structural work is the larger and growing branch, while rebar is smaller and projected to shrink, though it still needs replacements as people retire. Rebar work has a notably high self-employment share. The work is different, too. Structural work is about height, balance and crane coordination. Reinforcing work is closer to the ground but involves a lot of repetitive bending, carrying and tying in forms.

Ironworker Pay and Outlook

Across the whole occupation, BLS reports a median of $61,910 a year ($29.77 an hour) in May 2025. Employment is projected to grow about 1 percent from 2025 to 2035, slower than average, but BLS still expects roughly 6,800 openings a year as workers retire or switch occupations.

Industry matters. Among structural workers, heavy and civil engineering construction paid the highest median at $73,470, ahead of building equipment contractors ($68,330) and foundation and structure contractors ($63,340). Bridge and infrastructure work, in other words, tends to pay more than general building work.

For apprentices, BLS says starting pay is usually about half of journey-level pay. Local 44 starts its apprentices at 55 percent of the journeyman rate. Union pay also comes with health, pension and annuity contributions; Local 44 lists all three as benefits. To see how those contributions add up, read the union money guide.

How to Become an Ironworker Through a Union Apprenticeship

BLS describes the typical ironworker apprenticeship as 3 or 4 years, with at least 144 hours of technical instruction and 2,000 hours of paid on-the-job training each year. Sponsors include unions and contractor associations. Individual locals often exceed the minimums: Ironworkers Local 44 runs a four-year program, including a one-year probation, with at least 204 hours of classroom or shop instruction each year.

Local 44's entry requirements are a useful example of what to expect. Your local's list will differ in the details:

• At least 18 years old
• High school diploma or GED
• Valid driver's license and reliable, insured transportation
• Drug-free and in good physical condition
• Not afraid of heights

BLS adds that welding, rigging and crane-signaling certifications can make you a more attractive candidate. High school math, blueprint reading and welding classes help, too.

Before-you-apply checklist:

• Find the ironworkers local and its apprenticeship coordinator for your area.
• Gather your diploma or GED, driver's license and proof of insurance.
• Confirm you can reach jobsites reliably, since sites change constantly.
• Take a welding or blueprint-reading class if you have the time.
• Test yourself honestly on heights: a tall ladder or a climbing gym is a cheap gut check.
• Get in shape for carrying and climbing all day.

If you have no family in the trades, see our guide to breaking into a union trade with no connections.

The Physical Reality and Safety

BLS is blunt: ironwork is physically demanding and dangerous, often at great heights, and falls from height can be deadly. Cuts, sprains and overexertion injuries are common. Harnesses, hard hats, boots, gloves and safety glasses are standard. Most work is outdoors, and ironworkers often travel to wherever the current jobsite is.

BLS lists balance, depth perception, hand-eye coordination, critical thinking, strength and stamina as key qualities. Structural work especially rewards people who stay calm and methodical when exposed. If heights make you rushed or frozen, reinforcing or shop-based ornamental work may suit you better than connecting.

Weather, Travel and the Shape of the Year

Ironwork is outdoor work, and weather decides more of your schedule than in most union trades. BLS notes that structural ironworkers working at great heights do not work in wet, icy or extremely windy conditions, and that reinforcing ironworkers may be limited by precipitation. In practice, that means some days you show up and get sent home, and some weeks bring less work than others.

It also means the trade asks for flexibility about where you work. BLS says ironworkers may travel to jobsites, and Local 44 requires reliable, insured transportation as a condition of entry. A bridge job can be an hour from home; the next building may be across the metro area. Factor commuting time and fuel into what a wage really means for you.

Here is a quick way to think about the trade-offs before you apply:

How to Choose Your Lane

Many union apprenticeships expose you to several branches before you settle in, so you do not have to decide on day one. As you rotate, ask yourself:

• Do you like height and crane work? Lean structural. It is also the branch BLS projects to grow.
• Would you rather stay closer to the ground and work fast? Reinforcing suits people who like steady, repetitive production.
• Do you care about finish and precision? Ornamental and architectural work rewards a cleaner, more detailed touch.
• Do you like problem-solving heavy lifts? Rigging and machinery moving puts planning ahead of brute force.

Whichever branch you pick, welding and rigging skills carry across all of them and make you more useful to contractors.

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