Mapping America’s Biggest Development Projects in 2026

America is in the middle of one of its biggest building cycles in decades. High speed rail lines are finally breaking ground, AI is driving a wave of data center campuses with price tags that rival small countries’ GDP, and a new generation of stadiums, mixed use districts, and corporate campuses is reshaping skylines from Buffalo to Beverly Hills.

We mapped 54 of the largest active development projects in the country, pulled from public filings, company announcements, and government sources, so you can see exactly where the money is going. Explore the interactive map below, or scroll down for the breakdown by category.

The Numbers Behind the Boom

  • 54 major projects tracked across the country
  • 20 states and Washington D.C. represented
  • Roughly $490 billion in disclosed investment, and that’s a conservative figure. Several projects on this list, including the Penn Station overhaul, LAX’s terminal program, and Nashville’s East Bank district, are described only as “multi-billion dollar” without a specific number, and a few of our figures use the low end of a stated range. The real total is likely well past half a trillion dollars.
  • New York leads the pack with 10 projects on the map, followed by Illinois and California with 7 each, and Texas with 6.
  • AI infrastructure dominates by dollar value. The four data center campuses on this map account for more than $227 billion combined, more than every airport project on the map put together. Two of them, Stargate Abilene in Texas and Project Kestrel in Kansas City, each carry disclosed figures of up to $100 billion on their own.

Rail and Transit Infrastructure

Nine major rail and transit projects are underway, with a combined disclosed investment well into the tens of billions.

  • California High-Speed Rail (Central Valley segment), $35.7 billion, under construction with a 2033 target for the initial operating segment.
  • Brightline West, roughly $21 billion, the 218-mile Los Angeles to Las Vegas high-speed line that broke ground in April 2024.
  • Gateway Program / Hudson Tunnel, $16 billion for the tunnel component alone, with the broader program approaching $40 billion, connecting New York and New Jersey under the Hudson River.

Other standouts include the Honolulu Skyline rail extension, Maryland’s Purple Line (now over 90% complete), and the Second Avenue Subway Phase 2 in New York, one of the largest tunneling contracts in MTA history.

Airport Expansion

Seven airport modernization programs are reshaping how Americans fly, totaling tens of billions in disclosed spend.

  • O’Hare 21 / ORDNext, about $12.1 billion, Chicago’s comprehensive airport modernization including the Terminal D program.
  • DFW Forward Capital Program, roughly $12 billion across more than 180 individual capital projects.
  • The New Terminal One at JFK, $9.5 billion, the largest airport public-private partnership in US history.

LAX, JFK Terminal 6, BNA in Nashville, and SFO’s Terminal 3 West round out the list, all targeting completion between 2026 and 2030.

AI and Data Center Infrastructure

This is the category with the biggest individual numbers on the entire map. Four campuses, four AI giants, well over $200 billion combined.

  • Stargate Abilene, around $100 billion or more, the initial phase of OpenAI, Oracle, Crusoe, and SoftBank’s $500 billion Stargate program. The first two buildings were already operational by late 2025.
  • Project Kestrel, Kansas City, up to $100 billion phased over 20 years, linked to Google and approved by Port KC in August 2025. Six hyperscale data centers are planned on 379 acres.
  • Meta Hyperion, Louisiana, initially announced at $10 billion and now expanded to a planned $27 billion, exceeding 4 million square feet on a 2,250-acre site.

Vantage’s Shackelford County campus in Texas, sitting right next to the Stargate development area with its own gas-powered microgrid, completes the group.

Stadium and Arena Districts

Eleven new or renovated stadiums and arena districts are under development, the largest category on the map by project count.

  • The 1901 Project, Chicago, roughly $7 billion, a mixed-use entertainment district surrounding the United Center.
  • New Stadium at RFK Campus, Washington D.C., $3.7 to $3.8 billion, approved by the DC Council in 2025 for the Commanders.
  • Cleveland Browns Brook Park Dome, $2.4 to $2.6 billion, a 67,500-seat domed stadium with an accompanying mixed-use district.

The list also includes new homes for the Buffalo Bills, Tennessee Titans, Las Vegas Athletics, and three new MLS-specific stadiums in Queens, Miami, and Chicago.

Mixed-Use and Master-Planned Communities

Thirteen large-scale mixed-use, urban, and waterfront developments make this the biggest category by investment volume after data centers.

  • Hudson Yards, New York, $25 billion, still expanding with new phases of the Western Yard.
  • One Central, Chicago, $20 billion, a major transit-oriented proposal currently stalled on funding and feasibility concerns.
  • One Beverly Hills, $10 billion, a luxury residential, hospitality, and retail development with public gardens.

Other notable entries include Atlanta’s Centennial Yards, Tampa’s Water Street district, Detroit’s Hudson’s site redevelopment, and a 1,100-plus acre master-planned community called Veridea outside Raleigh.

Medical and Corporate Campuses

A smaller but high-value category, anchored by two very different projects.

  • Moody Children’s (Dallas Pediatric Campus), $5 billion, a 4.9 million square foot, 552-bed pediatric healthcare campus that broke ground in October 2024.
  • Amazon HQ2 PenPlace, $2.5 billion, the second phase of Amazon’s Arlington, Virginia headquarters, currently paused with an approval deadline extended to mid-2028.

Cultural Institutions and Other Major Developments

Rounding out the map are a casino resort and six additional projects we added after the initial research pass.

  • Bally’s Bronx Casino Resort, roughly $4 billion, awarded New York’s downstate casino license in December 2025.
  • Obama Presidential Center, Chicago, $850 million, opening this week on June 19, 2026, on a 19.3-acre Jackson Park campus.
  • George Lucas Museum of Narrative Art, Los Angeles, roughly $1 billion, scheduled to open September 22, 2026.

DisneylandForward, Hollywood Park’s ongoing phases, Cincinnati’s Banks final phase, Pittsburgh’s Lower Hill District, and Austin’s 500 South Congress complete the list.

Why This Kind of Map Matters for Real Estate and Construction Marketing

If you work in marketing for a developer, general contractor, AEC firm, or commercial brokerage, this map is doing something worth paying attention to. It turns scattered, hard-to-find public data into a single visual story that journalists cite, sales teams use as a conversation starter, and prospects actually want to explore instead of skim past.

The same approach works at a company level. A few ways teams in this industry are already using maps like this one:

None of these require a developer or a GIS background to build. That is the whole point of a no-code map builder.

Build Something Like This

Mapme is the platform behind the map on this page. No code, no GIS degree, just pins, categories, and your own data.

  • Drag-and-drop pin placement with custom categories, icons, and colors for each project type
  • Rich popups supporting photos, videos, project descriptions, and links to official sites or case studies
  • One-click embedding on any website, with the map staying fully interactive
  • Built-in lead capture so visitors exploring your map can turn into contacts

See how Mapme works ·
Start building your own map for free

Frequently Asked Questions

What is the biggest construction project in the United States right now?

By disclosed dollar figures, the largest projects are AI data center campuses. Stargate Abilene in Texas and Project Kestrel in Kansas City both carry figures of up to $100 billion. Among traditional infrastructure, the California High-Speed Rail Central Valley segment at $35.7 billion and the Gateway Program’s roughly $40 billion total scope rank among the largest publicly funded efforts.

How much is being invested in major US development projects in 2026?

Adding up the disclosed figures for the 54 projects tracked on this map points to roughly $490 billion in combined investment, and that is a conservative estimate since several projects only disclose a “multi-billion dollar” range rather than a specific number.

Which US state has the most major development projects underway?

New York, with 10 of the 54 tracked projects, including the Gateway Program, Second Avenue Subway Phase 2, Hudson Yards, Willets Point, and the Bally’s Bronx Casino Resort.

What is the largest AI data center project in the United States?

Stargate Abilene in Texas and Project Kestrel in Kansas City are both disclosed at up to $100 billion. Stargate Abilene is the initial phase of a broader $500 billion program backed by OpenAI, Oracle, Crusoe, and SoftBank.

Are these projects funded by government, private companies, or both?

All three. The map includes federally backed infrastructure like the Gateway Program, privately financed stadiums like Etihad Park in Queens, and public-private partnerships like the New Terminal One at JFK, currently the largest airport P3 in US history.

Sources and Methodology

Figures on this map come from public company announcements, government filings, port authority and transit agency documents, and reporting from outlets covering each respective industry, current as of June 2026. Where a project lists a range, we generally show the full range in the map data and use the lower or midpoint figure for any summary statistics on this page. Several projects are described in source material only as “multi-billion dollar” without a specific figure, so the totals above should be read as a floor, not a ceiling. Timelines, costs, and statuses for active construction projects change frequently. We’ll keep this map updated as projects progress.