Kjeldsen, Sinnock & Neudeck, Inc.

Civil Engineering & Surveying Services

Website

About the firm

Serving clients throughout Central California for over 65 years, Kjeldsen, Sinnock & Neudeck, Inc. (KSN) specializes in the planning, design, and surveying for civil engineering projects including flood control, water utilities, water resources, emergency response, environmental restoration, and public infrastructure. The practice handles all phases of project development from initial planning and site surveying through design, construction management, and ongoing maintenance support.

Established
1956
Firm type
Civil Engineering · Environmental Engineering · Land Surveying · Transportation Engineering · Water / Wastewater Engineering · Design-Build

People

Christopher H. NeudeckPrincipal

Neal T. ColwellPrincipal

Barry O'ReganPrincipal

Jeffrey A. MuellerPrincipal

Josh ElsonSenior Engineer and Surveyor

Steve PechinSenior Engineer and Surveyor

Jimmy RyanSenior Engineer and Surveyor

Capabilities

Civil Engineering

Service website

Delivering comprehensive planning and design solutions for public works, water resources, and private development projects.

  • Water and Wastewater Systems

    Designing water conveyance and treatment facilities to support municipal and agricultural utilities.

  • Flood Control and Water Resources

    Planning and engineering protective flood structures and sustainable water management systems.

  • Transportation Infrastructure

    Developing regional roadway and transit corridors to improve public mobility.

  • Site Improvements

    Providing grading, drainage, and utility design for commercial, industrial, and institutional properties.

  • Parks and Recreation Design

    Creating functional public spaces and recreational facilities that enhance community well-being.

  • Public Infrastructure Engineering

    Supporting communities with robust municipal works and public utility installations.

Surveying and Geospatial

Service website

Utilizing advanced measurement technologies to deliver precise mapping and boundary services.

  • 3D High Definition Scanning

    Capturing highly accurate spatial data using laser technology for smart design processes.

  • Right of Way Engineering

    Defining and mapping property boundaries and easements for utility and transport corridors.

  • Topographic Mapping

    Creating detailed terrain and elevation models to support engineering design and planning.

  • Construction Staking

    Providing accurate field layouts to guide builders in translating designs to physical structures.

Construction Management

Service website

Overseeing project execution to ensure compliance with design specifications, budgets, and schedules.

  • Design-Build Delivery

    Managing unified design and construction teams to deliver large public facility projects efficiently.

Emergency Planning

Service website

Developing flood emergency response plans and regional standards for northern California.

Industries

Commercial · Industrial · Government · Justice & Corrections · Parks & Open Space · Stormwater & Flood Control · Transportation · Wastewater · Water Resources · Water Supply · Agriculture

Projects

Victoria Island Emergency Incident

Victoria Island, CA · Stormwater & Flood Control · Client: Reclamation District 2040

Project details

KSN led an urgent, multi-agency response to stabilize a failing levee, protect critical state infrastructure, and turn an imminent disaster into a model of resilience. Services included construction management, emergency response and recovery, district engineering, ongoing support during the installation of a steel piling cut-off wall, 24/7 site monitoring, and coordination with over a dozen local, regional, and state agencies.

Kjeldsen, Sinnock & Neudeck, Inc. - Engineering Firms