Agency: 
American Council of Engineering Companies of Metropolitan Washington
Client: 
National Park Service
Project: 
Lincoln Memorial Reflecting Pool Reconstruction

The Lincoln Memorial Reflecting Pool reconstruction project was recognized with an Engineering Excellence Grand award for top design project from the American Council of Engineering Companies (ACEC) of Metro Washington. Louis Berger provided planning, design and construction management services for the $34 million project. The Grand award is the highest honor given by ACEC Metro Washington.

The Lincoln Memorial Reflecting Pool is one of the most iconic landmarks in the United States, serving as the backdrop to numerous historic events. Constructed in 1923, the original pool was built directly into the soft soil of the National Mall where it settled unevenly for decades.  By 2010, differential settlement had caused significant cracking in the pool’s joints and bottom slab, which had also separated from the perimeter structure. These leaks, coupled with evaporation, caused the pool to use 30 million gallons of potable city water annually. 

The National Park Service selected Louis Berger to provide planning, design and construction management services for rehabilitating the Lincoln Memorial Reflecting Pool. The project involved full reconstruction of the pool, which is supported by piles driven into bedrock for the first time in its history. The new pool draws water from the nearby Tidal Basin, reducing the impact on the city’s potable water supply by millions of gallons per year. Circulation systems and a water treatment facility ensure that the water in the pool remains clear and reflective. Louis Berger also oversaw the design and construction of new pedestrian and security infrastructure, ensuring that the pool is aesthetically pleasing, structurally sound, accessible to disabled visitors, and secure for future generations.

The ACEC Engineering Excellence Awards celebrate the most outstanding project achievements in the field of engineering around the world. Projects are judged based on originality, innovation, value to the public and the engineering profession, complexity, social and economic considerations, sustainability, and exceeding client needs.

Photo caption: Jim Stroup, Louis Berger design project manager, accepted the 2015 ACEC Engineering Excellence Grand Award at the ACEC Metro Washington awards gala.

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Lincoln Memorial Reflecting Pool | Washington, DC, US

Louis Berger was chosen by the National Park Service to design and manage renovation of the Lincoln Memorial Reflecting Pool. The new design taps the Tidal Basin as the pool’s primary water source, which reduces municipal water consumption by about 17 million gallons a year.    More >