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Building Conservation Associates

Thomas Jefferson Memorial

Location: Washington, D.C.
Year Built: 1941
Original Architect: John Russell Pope, Daniel P. Higgins, Otto R. Eggers

Designed by architect John Russell Pope and dedicated in 1941, the Thomas Jefferson Memorial is modeled after the Pantheon in Rome and
features a classical marble portico, circular marble colonnade, and a marble dome roof. The Memorial’s location in the Tidal Basin makes it a prominent feature of the landscape of the National Mall and Washington, DC.

The project at the Jefferson Memorial involved restoration of the portico and colonnade roofs, as well as the restoration of select stone portions of the portico. As the masonry conservators for the project, BCA had a significant role during the design phase assessing, investigating, and documenting marble and limestone conditions at the roof and portico, performing limited materials analysis, and developing a range of treatment recommendations, particularly for the massive marble portico roof tiles and the waterproofing underneath, which is believed to date to the structure’s original construction. BCA also assisted in the development of construction drawings and specifications for the project. BCA provided construction phase services as a consultant for the design team by reviewing submittals, RFIs, and mock-ups and working with the contractor to successfully implement the restoration work to the specifications. The collaborative project involved working closely with the design team and the National Park Service to develop and evaluate appropriate treatments for this renowned memorial.

Awards: 2022 Engineering News Record Award of Merit for Best Government/Public Building