Founded in 1956, KJELDSEN. SINNOCK & NEUDECK, INC. is proudly celebrating 60 years of Integrity, Growth and Stability in the civil engineering and surveying professions.  With offices in Stockton and West Sacramento, KSN is ideally situated to serve our private sector and public agency clients throughout California’s Central Valley and the Sierra Foothills.

KSN’s services are focused on supporting multi-discipline design teams on large scale, complex public works infrastructure and public facilities projects.  KSN’s areas of specialized areas of expertise include Design-Build, Flood Control, Water and Wastewater, Public Utilities, 3D High Definition Scanning and Modelling, and Right of Way Engineering.

KSN’s highly qualified staff of 40 engineers and surveyors have played a key role in the successful delivery of numerous large, high profile projects in northern California including CDCR’s California Healthcare Facility Design-Build Project in Stockton ($900m), CDCR’s Mule Creek Infill Project Design-Build Project in Ione

($350m), San Jose – Santa Clara Wastewater Facility Digester and Thickener Project ($85m), State Route 99 Stockton-Manteca Widening Project ($92m), State Route 4 Crosstown Freeway Extension – Stockton ($140m), Knights Landing Ridge Cut L
evee Improvement Project ($8m), Altamont Corridor

(ACEForward) Project ($950m), and the new Veteran’s Administration Fac
ility in Stockton ($250m).

KSN’s principals recognize the 
importance of providing our staff with a quality, balanced family/work lifestyle.  As a result, KSN has been ranked as one of the top twenty Best Civil Engineering Firms to Work For by the Zweig Group, a nationwide management consulting firm to the design industry, in 7 of the past 8 years.

Learn more about KSN by visiting our website at www.ksninc.com, or visit our Facebook and LinkedIn pages for information on our services and our culture.