As a Small Business Enterprise serving clients throughout Central California for over 65 years, Kjeldsen, Sinnock & Neudeck, Inc. (KSN), specializes in the planning, design, and surveying for various civil engineering projects such as flood control, water utilities, water resources, emergency response, environmental restoration, and various services for transportation and institutional related projects. KSN has the expertise and capability to handle all phases of project development from initial planning and design, construction management, and beyond to supporting maintenance and operation of the completed project. 

Lower Walnut Creek Restoration Project wins 2023 APWA Project of the Year

Environmental Category [ $5-$25M ]
KSN is excited to announce that Contra Costa County Flood Control and Water Conservation District’s Lower Walnut Creek Restoration project won the APWA Northern California’s Chapter for Project of the Year, Environmental Project of the Year, and the APWA Project of the Year on a national scale! This project restored tidal wetlands and supports climate resiliency for Lower Walnut Creek in Contra Costa County.
Follow the link below to learn more about the project!
Click Here

Civil Engineering
& Surveying Services

KSN’s highly qualified staff has the experience and qualifications to deliver a broad range of professional services to ensure that our client’s projects are successfully delivered with the efficiency and the attention to detail expected in today’s market. KSN has extensive experience in the successful delivery of large, complex public infrastructure and public facility projects using the design-build delivery method. KSN is a certified California Small Business Enterprise.