Washington Monument Earthquake Damage Repair

Project Details

Prime Contractor

$11.4 Million

National Park Service

Washington, DC

Wiss, Janney, Elstner Associates

555 Feet High


Project Description

Perini Management Services managed the repairs to this National Historic Landmark that suffered damage from an earthquake on August 23, 2011. The work consisted of removal of loose stone fragments, repair of cracks and mortar joints, including Dutchman repairs, and replacement of the lightning protection system. An elaborate scaffolding system was erected by hand and winch to enclose the entire Monument, reaching a height of 555 feet. The scaffolding  embraced the Monument by a tension/pressure system so as not to damage the historic structure. A decorative shroud and lighting was installed to illuminate the Monument and maintain its iconic image during construction. Due to its proximity to the White House and public events on the National Mall, continuous coordination with the National Park Service and United States Park Police was required for security.


Best Project in Culture/Worship, ENR Mid-Atlantic

Safety Merit Award, ENR Mid-Atlantic

2014 Craftsmanship Award in Masonry, Washington Building Congress

“The Contractor managed the overall work effort in an exceptional manner and was a true team player with the National Park Service personnel both at the park and the Denver Service Center. They were a pleasure to work with and are highly recommended for further work with the government.”
NPS Contractor Performance Assessment Report