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Major Projects
        
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        StatusAwardedOn GoingPlannedCompleted
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        LocationBartholdi Fountain and GardensBotanic Garden Administrative BuildingBrumidi CorridorsCannon House Office BuildingCapitol DomeCapitol Power PlantCapitol Reflecting PoolCapitol RotundaCapitol Subway SystemCox CorridorsCryptDirksen Senate Office BuildingFord House Office BuildingFort MeadeHall of ColumnsHart Senate Office BuildingHouse ChamberJames Madison Memorial BuildingJohn Adams BuildingLongworth House Office BuildingNational Statuary HallO'Neill House Office BuildingOld Senate ChamberOld Supreme Court ChamberOlmsted TerraceOutdoor GardensPackard CampusRayburn House Office BuildingRussell Senate Office BuildingSenate ChamberSmall House RotundaSmall Senate RotundaSummerhouseSupreme Court BuildingThomas Jefferson BuildingThurgood Marshall Federal Judiciary BuildingU.S. Botanic Garden ConservatoryU.S. Botanic Garden Production FacilityU.S. Capitol BuildingU.S. Capitol GroundsU.S. Capitol Visitor Center
      Completed
Exterior view of a building and a person.

  Hart Building Roof and Skylight Replacement

Senate Office Buildings

As part of this project, completed in 2015, the AOC also installed a 148 kW photovoltaic system on the Hart Senate Office Building roof. The solar panels will decrease utility use, increase sustainability and make the building eligible for an energy credit program which will further reduce electrical costs.
    On Going
Sculpture.

  Heritage Asset Conservation

The preservation of heritage assets on the U.S. Capitol campus is one of the Architect of the Capitol's (AOC) core functions.
    On Going
South Olmsted terrace restoration in 2015.

  Olmsted Terrace Preservation

Capitol Building

To properly restore the Olmsted Terrace, a six-phased project is underway by the Architect of the Capitol (AOC) to repair the masonry at the terrace walls.
    Completed
Exterior of a building.

  Russell Exterior Envelope Project

Senate Office Buildings

The Russell Building is the oldest of the three Senate office buildings. In FY 2023, the AOC successfully completed the Russell Exterior Envelope Project, a multiyear restoration project to preserve and repair the exterior envelope of the century-old building.
    Up-close view of a statue's face.

  Statue of Freedom Conservation

Capitol Building

The Statue of Freedom is regularly maintained to keep it in good condition.
    On Going
Detailed view of stone sculpture.

  Stone Preservation on the Capitol Campus

Stone preservation is a top priority for the Architect of the Capitol (AOC) as nearly every building is enveloped in stone and all have problems.
    Completed
Structural Analysis of Calder's Mountains and Clouds

  Structural Analysis of Calder's Mountains and Clouds

Senate Office Buildings

The four clouds were lowered to the ground and fully assessed to ensure their structural integrity, including analysis against seismic design considerations. This project was completed in 2016.
    On Going
View of the Summerhouse at the U.S. Capitol with the gates closed.

  Summerhouse Maintenance

Capitol Grounds and Arboretum

The Architect of the Capitol's repair and renovation of the Summerhouse fountain and surrounding landscape is complete. Additional landscape improvements to the grotto and surrounding planting beds will continue into the spring of 2024.
    Completed
Exterior view of a building.

  Supreme Court Façade Restoration - North, South and East

Supreme Court Building and Grounds

This restoration project entailed cleaning, repairing and restoring the Vermont marble of the cheek walls on either side of west steps, and the north, south and east façades of the Supreme Court Building.
    Completed
Exterior view of a building.

  Supreme Court Façade Restoration - West

Supreme Court Building and Grounds

The Supreme Court Building's west front façade has undergone a complete restoration to address deterioration due to age, weather and nature.
    On Going
Exterior of a building.

  Thurgood Marshall Façade Repair

Supreme Court Building and Grounds

Work to stabilize façade elements at the Thurgood Marshall Federal Judiciary Building has begun.
    Completed
View of grass and trees with a building in the background.

  U.S. Capitol Visitor Center Entrance Landscape Restoration

Capitol Grounds and Arboretum

This project replaced trees at the U.S. Capitol Visitor Center (CVC) entry to recapture the historic design intent and restore the historic character and contributing features of the original Olmsted landscape within the context of the current landscape conditions.
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