TKDA has provided forward-thinking architecture, engineering and planning to communities, government and private industries for more than 100 years. Throughout the decades, the company has maintained a strong commitment to quality design and service to both our community and our region’s infrastructure, playing a key role in designing the area’s roads, bridges, rail, mass transit, parks and trails as well as buildings and facilities for companies, schools and government agencies.
Founded in 1910 by Maximilian Toltz as the Toltz Engineering Company in Saint Paul, the company has played a significant role in designing the city’s landmarks, including the beloved Como Park Conservatory (now Marjorie McNeely Conservatory) the iconic Hamm Building and the Robert and Washaba Street bridges.
By 1956, Mr. Toltz added partners King, Duvall and Anderson. While the firm is now known as TKDA, we have never moved more than four blocks from our original offices in downtown Saint Paul. Over the years, TKDA has established ourselves as trusted experts who bring quality design and service in six distinct areas – architecture, aviation, building engineering, municipal engineering, rail and surface transportation. Our diversity, excellent reputation and capability to provide our clients with complete architectural, engineering and planning services has allowed our company to serve multiple markets, successfully weather challenging economic times and be well positioned for the future.
TKDA’s newly remodeled headquarters located on five floors of the UBS Tower in downtown Saint Paul is now home to more than 200 engineers, architects, planners and professional support staff. An additional 50 TKDA staff work across the country in offices in Duluth, Chicago, Los Angeles, San Bernardino, Seattle, Tampa and Vero Beach.