Full-service architectural & engineering firm with over 50 years of experience. Since 1954, Lightowler Johnson Associates (LJA) has been providing high quality architectural and engineering services for projects throughout the Midwest and nationwide. Our experience has encompassed a wide range of projects including government, correctional, recreational, educational, medical, industrial, biodiesel, hospitality, commercial and housing facilities. LJA offers a complete range of architectural, mechanical, electrical, civil, and structural engineering and surveying services.