Street view of the OKC United States Post Office and Courthouse buildings.

OKC United States Post Office and Courthouse Buildings

Conducting detailed analysis to preserve historic federal buildings.

Project Facts

Location Oklahoma City, Oklahoma
Owner U.S. General Services Administration
Size Two buildings
Status Completed 2015


The United States Post Office and Courthouse, located in downtown Oklahoma City, is a Beaux-Arts limestone building constructed in 1912, with the central Art Deco tower added in the 1930s. Directly adjacent to the north is the Moderne-style Federal Building and Courthouse constructed in the 1960s. Starting in 2013, Walter P Moore was part of a multi-disciplinary project team engaged by the General Services Administration (GSA) to conduct a study into the potential seismic and blast resistance of the two buildings.

About the project

When a multi-disciplinary project team was put together by the General Services Administration (GSA) to evaluate the United States Post Office and Courthouse buildings in Oklahoma, City, the Walter P Moore team jumped at the chance to analyze these historic facilities. Although portions of the federal building complex had already been retrofitted for security purposes, the GSA wanted to address critical vulnerabilities in the remaining facility systems, including structural and fenestrations.

Walter P Moore performed a detailed assessment of the existing conditions, particularly addressing building enclosure and structural concerns. Detailed analysis was also performed on the existing systems and compiled into a seismic and security retrofit feasibility study. 

The findings from the feasibility study will be incorporated into future design-build construction projects.