U.S. Capitol Map
Cannon Renewal Project — Phase 2
The Cannon House Office Building has not received a comprehensive systems upgrade since the 1930s, and many of the building's systems are original – dating back to 1908 or earlier. These systems are past the end of their useful lives and the increasing risk of their failure jeopardizes the building's long-term functionality and safety. Other necessary work includes upgrading infrastructure systems and repairing the exterior stone façade.
Full project details are at aoc.gov/cannon.
Capitol Exterior Preservation Project — South Extension
This is a multi-phased project designed to address deferred maintenance, extend the life expectancy of the deteriorated stone and to replace missing elements of the U.S. Capitol Building. The stone preservation work includes cleaning of the stone and pediment sculpture, replacement of the mortar and sealants at all of the stone joints, treatment of the carved stone and pediment sculpture, replacement of stone where elements are missing or cannot be repaired, and replacement of the bird deterrent systems. The project also includes preservation of the architectural metals.
Full project details are at aoc.gov/stone/capitol.
Conservatory Façade and Roof Restoration
The U.S. Botanic Garden will remain fully open and accessible throughout construction. During construction, the stone façade will be fenced-in, but accessible paths around the Conservatory will remain open. Access to the National Garden will remain available through two entrances on Maryland Avenue SW and Independence Ave SW. Some of the restoration work could create noise, but will occur before the Conservatory opens and have minimal impact on visitors.
Full project details are at aoc.gov/projects/conservatory-facade-and-roof-restoration.
Exhibition Hall Renovations
The U.S. Capitol Visitor Center's (CVC) Exhibition Hall will close in March 2019 for renovations. During the renovation period, the CVC will continue to offer a full calendar of tours and programs. The Hall is expected to reopen in 2021.
Full project details are at aoc.gov/projects/capitol-exhibition-renovations.
Rayburn Garage Interior Rehabilitation — Phase 2
The Rayburn Garage Interior Rehabilitation will replace structural concrete and waterproofing joints to extend the life of the garage for 50 years. The rehabilitation will also bring the garage levels up to code compliance for mechanical, electrical and fire protection systems.
Full project details are at aoc.gov/rayburn.
Russell Exterior Envelope Project
The Architect of the Capitol, in conjunction with the Senate Committee on Rules and Administration, has developed a five-phase restoration project to preserve the exterior envelope of the century-old building, including its exterior stone, wood windows and glazed doors. The project also includes the rehabilitation of the balcony flooring, balusters, balustrades and roof chimney.
Full project details are at aoc.gov/stone/russell.
Senate Underground Garage and Landscape Restoration
The Architect of the Capitol is undertaking a multi-year project to renovate this area. The Senate Underground Garage and a large portion of Senate Park will remain inaccessible throughout the project, which is expected to be complete in early fall 2020.
Full project details are at aoc.gov/projects/senate-underground-garage-and-landscape-restoration.
Thurgood Marshall Façade Repair Program
Project work includes the removal of the building's veneer and replacement of damaged stone panels on the building's façade.
Full project details are at aoc.gov/marshall.
Thurgood Marshall Garage Renovation
Project work includes repair of water infiltration problems, replacement of interior finishes, crack repairs, a new traffic surface topping, and upgrades to the lighting and sprinkler systems.
Full project details are at aoc.gov/marshall-garage.
Ulysses S. Grant Memorial Restoration
This captivating monument is in the midst of a meticulous conservation effort. With the restoration of the bronze statuary and upper plazas behind us, we have embarked upon the next phases of the memorial restoration. Work on the lower granite stone repairs has begun and completion is expected this fall.
Full project details are at aoc.gov/grant.