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- 444 Cedar St., Suite 1500 UBS Plaza St. Paul MN 55101-2140
- (651) 292-4400
- (651) 292-0083
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TKDA is a 100 percent employee-owned full-service engineering, architecture, and planning firm with a long-history of providing effective and efficient design solution for our public and private clients in Minnesota and across the country. Established in 1910, our talented design professionals provide diversity and multi-discipline strength for our Architecture, Aviation, Facilities Engineering, Municipal Services, Rail, and Surface Transportation divisions.