Our Company

TKDA is a full-service engineering, architecture and planning firm committed to improving communities, helping businesses and industries grow and building long-term client relationships

Headquartered in Saint Paul, Minnesota, and with offices across the United States, we are a complete single-source firm providing effective design solutions for the architectural, aviation, building engineering, municipal, rail and surface transportation sectors. We have been serving clients well for more than 105 years. With the experience to get your project done right the first time, we provide inspired solutions to keep you coming back again and again, for years to come.

Our 250-member staff are all employee owners motivated to provide our clients with excellent service. We draw from a century of experience and are invested in the latest training and technology to provide innovative, lasting design solutions.

In Illinois, TKDA offers engineering services under license number 184.001499, but architecture services under license 184.005959 and the name Cedar Street Architecture at TKDA, Inc.