America's Manufacturing Construction Boom Has Peaked — Here's What the Numbers Say

For three remarkable years, manufacturing construction was the engine of the entire U.S. nonresidential market. Factories that barely existed on drawing boards in 2021 transformed rural counties in Ohio, Arizona, and Georgia into billion-dollar industrial campuses. But the latest data from the Census Bureau and the Federal Reserve Bank of St. Louis confirms what industry economists have been predicting: the peak is behind us, and the construction industry is now adjusting to a new baseline.

From Doubling to Declining: The FRED Data

Total construction spending on manufacturing facilities in the United States hit a seasonally adjusted annual rate of $206.1 billion in November 2025, according to the Federal Reserve Bank of St. Louis FRED database. By March 2026, that figure had fallen to $190.1 billion — a decline of nearly 8% in four months. December 2025 clocked in at $199.5 billion, January 2026 at $195.3 billion, and February 2026 at $192.2 billion, confirming a steady, not sudden, downward trend.

To appreciate how far the industry has traveled, consider the starting point. Annual average manufacturing construction spending was roughly $75.5 billion in 2021, according to FactCheck.org analysis of Census Bureau Value of Construction Put in Place data. It climbed to $235.6 billion in 2024 — a rise of more than 200% in three years. No sector in nonresidential construction has ever expanded that fast over that time frame in the modern data era.

What Drove the Surge

Three pieces of legislation created the conditions for the boom. The CHIPS and Science Act of 2022 authorized $52.7 billion for domestic semiconductor manufacturing, triggering a cascade of private investment from Intel, TSMC, Samsung, Micron, and others. The Inflation Reduction Act of 2022 provided tax credits for clean energy manufacturing — battery plants, solar panel facilities, and EV assembly lines. And the Infrastructure Investment and Jobs Act of 2021 seeded supply chain construction in adjacent industries. As the U.S. Treasury Department documented in a 2023 analysis, computer, electronics, and electrical manufacturing alone contributed roughly 64% of all manufacturing construction spending in 2023 — up from just 11% of the total five years earlier.

The result was a wave of megaprojects unlike anything the country had seen. Intel's Fab 52 and Fab 62 complex outside Columbus, Ohio, represented the single largest domestic chipmaking investment in history. TSMC's Arizona campus, Samsung's Taylor, Texas facility, and Micron's upstate New York plant collectively represented tens of billions in construction starts. EV battery plants from LG Energy Solution, SK Innovation, and Panasonic added more.

Why the Cooldown Is Happening Now

The correction is not a crisis — it is a natural consequence of project sequencing. "With CHIPS Act-enabled megaprojects winding down and the stiff headwind of trade policy, manufacturing construction spending has fallen nearly 10% over the past 12 months," Anirban Basu, chief economist at Associated Builders and Contractors, said in January 2026. The massive plants commissioned in 2022 and 2023 are now in their finish-out and commissioning phases, not their heavy civil construction phases, which naturally reduces spending figures even as the facilities near completion.

Tariffs are adding a separate layer of friction. Section 232 steel and aluminum tariffs of 50% have increased the cost of structural steel, reinforcing bars, and metal decking across all project types. For manufacturing facilities that are inherently steel-intensive — large clear-span structures, elevated equipment pads, heavy crane rails — the cost impact is material. Contractors pricing new manufacturing work in 2026 are absorbing input costs that were not in the original models when these projects were first budgeted in 2022 and 2023.

The American Institute of Architects, cited in a FactCheck.org analysis published in February 2026, projected that manufacturing construction spending fell roughly 5% in 2025 and would decline another 4% in 2026, followed by a 1% drop in 2027. The AIA's assessment reinforces the FRED data: this is a multi-year normalization from an exceptional peak, not a one-month blip.

What Still Looks Strong

Despite the moderation, manufacturing construction spending in March 2026 remains historically elevated. A $190 billion SAAR is still more than double the pre-boom levels of 2021, and the volume of active construction across the country reflects that. Intel's Ohio campus is still being built. TSMC's Arizona expansion continues. Micron's New York facility has progressed through multiple construction phases. These are multi-year projects that will sustain labor and materials demand well into 2027 and 2028 even as new starts decline.

Defense manufacturing is emerging as an offsetting growth driver. L3Harris Technologies announced a $1.27 billion expansion of its solid rocket motor manufacturing campus in Orange County, Virginia, in April 2026 — one of multiple defense industrial base investments now entering construction across the country. Castelion, a hypersonic systems company, broke ground in January 2026 on a $220 million, 1,000-acre manufacturing campus in Sandoval County, New Mexico. Avio announced a $537.6 million solid rocket motor facility in Pittsylvania County, Virginia. These projects do not approach the scale of semiconductor megaprojects, but they represent a new category of advanced manufacturing construction that was largely absent from the 2022–2024 boom.

Implications for the Broader Market

The softening of manufacturing construction carries meaningful consequences for the overall nonresidential market. Total construction spending in March 2026 was estimated at a seasonally adjusted annual rate of $2,185.5 billion, up 1.6% year-over-year but up only 0.6% from February, according to the Census Bureau's May 7, 2026 release. Manufacturing construction, still the largest single component of nonresidential spending, has been a drag on overall growth since it peaked.

Firms that built large workforces and equipment fleets around semiconductor and EV factory construction are now recalibrating. The question for 2026 and 2027 is whether data center construction, public infrastructure, and defense manufacturing can absorb enough of the displaced capacity to prevent a broader contraction in nonresidential activity. As of the March 2026 data, that transition is still very much in progress — and the final answer will likely not be clear until the second half of the year.