Raths, Raths & Johnson's Chicago Office is located in the heart of the downtown business district

RRJ has been serving clients for over 50 years in Chicago providing engineering and architectural consulting expertise in the evaluation, investigation, testing, and repair design of commercial buildings, residential high-rise towers, hospitals, university buildings, parking garages, bridges, and transit infrastructure.

Ongoing Projects

175 East Delaware Place 
Insulating Glass Replacement


The Chandler Condominiums
Critical Facade Examination


Garfield Park Conservatory
Greenhouse Structures Testing | Evaluation of Sloped Glazing Repairs