Your Trusted Contractor in Apple Valley
With 25 years of industry experience, S. Christensen Engineering Inc. was founded in 2023 by a dedicated professional who spent decades perfecting his craft in asphalt paving, underground utility installation, and street improvement projects. After working with top-tier contractors across Southern California, he recognized the need for a company that combines technical expertise with honest, dependable service—and decided to create one himself.
Since launching, S. Christensen Engineering Inc. has specialized in delivering high-quality infrastructure solutions with a major focus on street improvements. From asphalt paving and grading to underground utilities such as water, sewer, and storm drain systems, we bring decades of field knowledge to every project. Our reputation is built on precision, safety, and our ability to meet the unique demands of municipalities, developers, and contractors alike.
Our Mission
At S. Christensen Engineering Inc., our mission is to provide exceptional street improvement services through expert asphalt paving and underground utility work. We are committed to building safer, longer-lasting infrastructure for communities, with every project reflecting our core values of quality, integrity, and reliability. Whether it’s a full street reconstruction or utility installation beneath the surface, we aim to exceed expectations with efficient, professional service and a job done right the first time.
Our Recent Projects
Showcasing Quality Work
I 10 Freeway Shoulder Repair
Demo of existing HMA shoulder, over-excavate to new sub-grade, scarify and recompact, installation of aggregate base, pave new HMA shoulder, and maintenance turn-out
- Client: CalTrans
Cal-Trans Bishop
Widen existing roadway, install new PCC curb ramps, PCC curb and Gutter, PCC sidewalk, Construct New 5″ HMA over 12″ aggregate base section
- Client: Cal-Trans
Patton's Steel Ontario
Construct new welded CMLC waterline and install new 6″ Fire Hydrant
- Client: City of Ontario
Cal Trans Hwy 74
3″ depth grind and overlay of existing damaged HMA lanes , Install new striping
- Client: Cal Trans
City of Needles Phase IV
Grind existing damaged asphalt, pave leveling course, construct new 2″ HMA wearing course. Full depth reclamation dig outs, Construct New PCC cross gutters and curb and gutter.
- Client: City of Needles
City of Adelanto Auburn Ave
2″ grind and overlay of existing roadway
- Client: City of Adelanto
Liberty Utilities Parking Lot Construction
Construct new 4″ asphalt parking lot, install new striping
- Client: Liberty Utilities
Baldy Mesa and Phelan Road Intersection
2.5″ Grind and overlay of existing intersection , construct new striping
- Client: City of Phelan
Emergency Water Main Repairs
Remove existing damaged waterlines, valves, water services, and fire hydrants. Install new facilities per City of Adelanto standard drawing, Patch existing roadways
- Client: City of Adelanto
Arizona Pipeline Grind and Overlay/Slurry Seal Project
Grind and overlay multiple City streets including Victorville, Hesperia, Apple Valley, Barstow and Adelanto. Slurry seal Type II latex seal, construct new striping.
- Client: Arizona Pipeline Co.
Meet Our Team
Seth Christensen
President
As President of S. Christensen Engineering Inc., Seth Christensen provides visionary leadership and strategic direction to drive the company’s growth and success. With extensive industry expertise, He oversees all operations, ensures quality and safety standards, and cultivates strong relationships with clients, partners, and the community. Committed to excellence and innovation, Seth leads the team in delivering superior paving and infrastructure solutions that stand the test of time.
Valarie Christensen
Vice President, Secretary & Treasurer
As Vice President, Secretary, and Treasurer of S. Christensen Engineering, Inc., Valarie Christensen plays a vital role in both the strategic leadership and financial management of the company. She supports overall operations, contributes to long-term planning, and ensures the company runs efficiently and in compliance with regulatory standards. In this multifaceted role, she manages financial oversight, including budgeting and cash flow, maintains corporate records, and supports communication and coordination across the organization. Her dedication helps drive the company’s continued growth and operational success.
Michelle Hisey
Office & Project Manager
Our Office & Project Manager ensures seamless office and project operations. She manages daily office activities, coordinates project planning and execution, and oversees both accounts payable and receivable to maintain financial accuracy.
Evelia Aguon
Payroll Manager & Human Resources Coordinator
Our Payroll & Human Resources Coordinator plays a key role in supporting our team by managing payroll processes and assisting with HR functions. She ensures that employees are paid accurately and on time, maintains employee records, Oversees certified payroll, is trained in LCP Tracker and DIR record keeping.
Join Our Team
Email Us
For inquiries and support, contact us via email at contact@schristensen.engineering. We are committed to providing prompt responses to your questions about our paving and utility services.
Call Us
Reach out to our team by phone at (442)-855-7585. We are available to discuss your project needs and schedule consultations.
Visit Us
Our office is located at 21288 Papago Rd, Apple Valley, CA 92307. View on Map for directions and planning your visit.