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Jeddah Tower 2025 Progress: Engineering the World’s First 1-Kilometer Structure

January 06, 2026
John Peronto
John Peronto
Managing Principal & Chicago Office Co-Director
jperonto@thorntontomasetti.com +1.312.596.2022 Chicago
Structural engineering innovations continue to support Jeddah Tower’s record-setting rise.
Jeddah Tower advanced in 2025, moving closer to becoming the world’s tallest building.
Jeddah Tower in Saudi Arabia.
Approaching 80 floors in 2025, Jeddah Tower continues its ascent toward the 1-kilometer mark.
Jeddah Tower in Saudi Arabia.
With construction accelerating in 2025, Jeddah Tower continues its climb toward becoming the tallest building ever built.
Jeddah Tower in Saudi Arabia.
Advanced structural engineering is driving Jeddah Tower’s rapid rise toward record-breaking height.
Jeddah Tower in Saudi Arabia.

Jeddah Tower, Saudi Arabia’s landmark megatall mixed-use tower, made significant construction progress in 2025, surpassing 80 floors in December. When completed, it will exceed 1,000 meters (3,280 feet), becoming the first human-made structure to reach a full kilometer. 

Thornton Tomasetti is providing structural design services to Adrian Smith + Gordon Gill Architecture, combining bespoke high-performance designs with advanced structural systems and materials, in close coordination with the project team, including Jeddah Economic Company, Langan, RWDI, Dar Al-Handasah, Saudi Binladin Group (SBG) and Turner International.

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