Theodore Roosevelt Presidential Library

Project Summary

Winn Construction played a vital role in building the 40,000-square-foot Theodore Roosevelt Presidential Library, a sustainable “Living Building” set on 92 acres in North Dakota. Beginning in July 2023 and leading up to its completion for the July 4, 2026 grand opening, over 240 Winn Construction team members logged more than 149,000 hours on the landmark project. A standout feature of the construction was the signature rammed earth walls—a first-of-its-kind architectural showcase in North Dakota that required extensive research, shop mockups, and guidance from a specialist consultant to master the precise forming, mixing, and sealing processes.

Rammed Earth Construction

Rammed earth construction is a building technique that uses locally sourced materials such as clay, silt, sand, gravel, or other aggregates. These earthen materials are then compacted within a form work or form to create durable, sound and thermally insulated structures with natural fire and pest resistance. This practice is experiencing a revival due to its sustainability and energy efficiency. It is best suited for side walls and interior partitions and should not be used for below-grade foundations or basement walls.

Engineering Highlights & Accomplishments

Beyond the rammed earth walls, crews managed numerous complex engineering challenges, including placing sustainable low-carbon concrete mixes, constructing tall walls and tunnels, double-pouring floors across complex elevation changes, and drilling deep piers for solar canopies and remote boardwalks. In total, the team placed approximately 23,500 tons of gravel and 900 tons of rebar. Winn Construction’s dedication and craftsmanship earned them recognition as a primary trusted subcontractor on the build, establishing a lasting legacy on a nationally significant piece of architecture.

Photo Gallery

Photos by Chad Ziemendorf