Major Projects

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.

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.

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.

When the Architect of the Capitol (AOC) does not receive enough funding to pay for all maintenance and repairs required across the U.S. Capitol campus, work gets deferred due to budget constraints.

The preservation of heritage assets on the U.S. Capitol campus is one of the Architect of the Capitol's (AOC) core functions.

Work to stabilize façade elements at the Thurgood Marshall Federal Judiciary Building has begun.

This two-phase project will replace the 85-year-old copper roof of the Library of Congress' John Adams Building.

A multi-year program ensuring hearing rooms on the Capitol campus have reliable features to support Congress' legislative duties.

The Member and committee office moves and space reassignments follow the biennial November elections for the United States Senate and U.S. House of Representatives.

The Cannon Renewal Project provides an effective workplace for the next century to serve the needs of the U.S. House of Representatives and support Congressional operations.

Restoring areas of the U.S. Capitol to represent an appropriate period as determined by the curatorial community.

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.

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.

The Ulysses S. Grant Memorial is regularly maintained to keep it in good condition.

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.