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DBIA Oklahoma City - Oklahoma State Capitol Exterior Renovation Presentation

February 23 - City of Houston Northeast Water purification plant (NEWPP) & Campus Tour

Discover the Award-Winning Oklahoma Capitol Exterior Renovation Project with DBIA Oklahoma City

Time & Location

Mar 2, 2023, 4:00 PM - 6:00 PM CST at the JE Dunn's OKC Offices

About the Event

Join DBIA Oklahoma City for an informative presentation on the award-winning Oklahoma Capitol Exterior Renovation project. This massive undertaking began in July 2016 and involved renovating the nearly 100-year-old state Capitol building. The project was awarded the Distinguished Merit from ULI of Oklahoma and was AGC Builds' Oklahoma Winning recipient. Discover the challenges and successes of the design-build process with members from the project's design team and design-builder.


  • Lynnsee Boyse – Senior Project Manager, JE Dunn Construction

  • Julia Mathias Manglitz, APT RP – Associate Principal, TreanorHL

  • Trait Thompson – Project Manager on the Oklahoma State Capitol Renovation


  • $25 to attend

  • *First-time guests of DBIA-SW may attend for free.


Thurs, Mar 2
  • 3:30 PM – Registration

  • 4:00 PM – Presentation

  • 5:00 PM – Snacks & Drinks will follow the presentation


Constructed from 1914 to 1917, the Oklahoma State Capitol was one of the most significant architectural achievements in Oklahoma’s short history as a state. However, at the turn of the 21st century, the capitol was showing its age. In 2013, Preservation Oklahoma added the building to its Most Endangered Places report. The plumbing and electrical systems were failing, and water infiltration was common. The exterior limestone and granite cladding were crumbling, and hazardous materials were common throughout the Capitol. Since 2014, the restoration project has modernized the building’s infrastructure systems and improved the function and layout while maintaining the historic integrity. The plaster ceilings and marble floors have been repaired and restored and areas not previously compliant with modern building codes have been brought up to date. During the restoration, over 400 tons of asbestos-containing material has been removed from the building. Compliance with the Americans with Disabilities Acts has been a priority to make the building accessible to all Oklahomans. On the exterior, over 4,600 stone repairs have been completed and 21 miles of mortar joints were repointed. All 477 original steel windows were repaired, and ornate exterior light fixtures were restored. The steel pocket doors and cast-iron ornamentation on the south portico were painstakingly restored and the structures for the exterior staircases and battlements were completely rebuilt. Finally, the underground tunnel linking the Capitol to a parking lot across Lincoln Boulevard was unearthed and new waterproofing was added to prevent water infiltration. As part of the first comprehensive restoration of the building in its 103-year history, a new $5,000,000 entrance has been constructed to provide a true “front door” experience for those visiting the building. Oklahomans can be proud of the work being done to bring dignity and functionality back to the People’s House. The Project team includes the State of Oklahoma, FSB and Manhattan Construction (interior restoration), ADG, Treanor HL, and JE Dunn Construction (exterior restoration), Mass Architects, Trait Thompson, and Steve Mason.


Contact :

Haley Frieler



Steven Johnson

DBIA Oklahoma City Chair


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