Our Company

BKL Engineers/Architects was founded in 1946. We began our long-standing service by providing Civil Engineering services in Oklahoma on such landmark projects as:

  • Tulsa Metropolitan Expressway System Master Plan
  • Tulsa Port of Catoosa
  • Tulsa’s North and Southside Wastewater Treatment Plants
  • Original roadway and bridge designs for the Oklahoma Department of Transportation and the Oklahoma Turnpike Authority


Since adding Architectural services in 1969, BKL has become an authority in Justice Architecture as well as a leader in the design of municipal, religious, institutional, and manufacturing facilities. 


Today with the leadership of principals Stacy Loeffler, Daniel Polasek and Jenni Hammock, BKL continues to be at the forefront of engineering and architecture. The firm is building on experience and taking BKL into the future with innovative projects such as the Rogers County Courthouse, Mayes County Fairgrounds, Owasso 96th Steet N. & U.S. 169 Interchange, and numerous other transportation and architectural projects in Oklahoma.  With the efficiency of a small business, we are bringing to the table a team with the depth of experience and expertise of large national firms.