National Park Service

Lincoln Memorial Undercroft

Project at a Glance

Washington, DC


Quinn Evans

Project Type


Project Overview

  • Renovation of the Undercroft that has not been touched in over a century
  • Construction of a new Interpretative Center
  • Phased installation of waterproofing under the existing granite and marble grand stairs that lead up to the Statuary Chamber
  • Occupied and open to visitors during construction

The project is located at National Mall and Memorial Parks in Washington D.C. The scope of the project includes complete removal of the existing Visitor’s Center and Retail Shop and renovation of the foundation space below the Lincoln Memorial Chamber, referred to as the “Undercroft,” that is an unfinished, cathedral-like space. Once complete, the Undercroft will feature a new Interpretive Center. The project will also replace the south elevator and install a new north elevator in the vicinity of the former retail shop area.

Additional scope includes widening of the east entrances to the mezzanine Undercroft, enlargement of the existing vent on the north side, demolition and partial replacement of the Raised Terrace structural concrete slab, installation of new waterproofing over new structural concrete, phased installation of waterproofing under the upper landing and run of the existing granite and marble grand main stairs that lead up to the Statuary Chamber. Interior work includes placement of new concrete structure and the installation of new mechanical, electrical, plumbing, and security systems. Interior work also includes the construction of museum-quality interior finishes. The Memorial will remain open to visitors during construction, which will require extensive safety measures.