Louis & Associates, LLC              

Louis & Associates, LLC
9436 Wood Glen Ave.
Burke, VA 22015

Phone: 571.232.9589
e-mail: lyan@louisassociatesllc.com

About us


Louis & Associates, LLC is a structural engineering consulting firm located in Fairfax, VA, founded in 2000. Mr. Louis (Luyi) Yan, the president and principal structural engineer, holds PE licenses in VA, MD, and DC with BS (1982) & MS (1987) degrees in structural/civil engineering. He is also a member of ASCE and NCEES. With over 30 years of experience with structural analysis/design, and building damage evaluation, Louis and his team hope to bring you high-quality service backed by seasoned experience, creative designs, and cost-efficient solutions.

Louis had worked with some nationwide design firms during his professional career, such as Bechtel DTP (a lead engineer in Dulles Corridor Metrorail project, Phase I), Parson Brinckerhoff (a lead engineer in US Air Force & Raytheon projects in Taiwan, and Wiley & Wilson (a senior engineer in security improvement projects for several US overseas consulates, and military bases around the DC area). 

Louis has broad professional knowledge and hands-on engineering experience. He is familiar with both current nationwide and statewide building codes, as well as local jurisdiction requirements for applying building permits. 

Louis & Associates LLC has completed hundreds of small and medium projects in the Washington DC metropolitan area since it started. Mr. Louis (Luyi) Yan will continue to contribute his knowledge and skills to serve the communities around the DC area, and do his best to meet the clients' expectations with a reasonable cost.




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