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Business Details
15 Years
experience
Your Trusted Engineering Partner in Decatur, IL
Established in 2011, SKS Engineers has built upon a legacy of over 50 years of combined engineering expertise through its team of licensed professionals. Our firm provides comprehensive civil, geotechnical, structural, and mechanical engineering services alongside land surveying and construction quality control. With offices in Decatur and Bloomington, Illinois, we serve diverse clients across 27 states, including government agencies, educational institutions, and industrial firms.

Our multidisciplinary approach ensures tailored solutions for projects ranging from infrastructure development to complex structural designs. We maintain prequalification with the Illinois Department of Transportation and Capital Development Board, supported by in-house laboratories and certified field technicians. Our commitment to quality is demonstrated through decades of service and a client-centric philosophy that prioritizes project success.
Services
Civil Engineering Geotechnical Investigations Structural Design Land Surveying MEP Engineering Construction QC Drainage Studies SWPPP Compliance Subsurface Investigations Material Testing
Details
  • Year established: 2011
Highlights and features
  • We offer 50+ years of combined engineering expertise across 27 states
  • Our in-house laboratories and certified technicians ensure quality control
  • We maintain IDOT prequalification for highways and surveying services
  • Our multidisciplinary team handles projects from concept to completion
  • We serve diverse industries including agriculture, education, and infrastructure
Associations and certifications
  • Illinois Capital Development Board
  • Illinois Department of Transportation (IDOT)
Services
Civil Engineering
We provide comprehensive civil engineering solutions including site development, stormwater management, and roadway design. Our team creates grading plans, drainage systems, and utility infrastructure for commercial, industrial, and institutional projects. With expertise in permitting and regulatory compliance, we ensure projects meet local, state, and federal requirements while optimizing functionality and sustainability.
Geotechnical Engineering
Our geotechnical services include subsurface investigations, soil testing, and foundation recommendations. We conduct field sampling and laboratory analysis to assess soil properties for construction projects. This data informs foundation design, slope stabilization, and pavement subgrade preparation, ensuring structural integrity and long-term performance across diverse project types from buildings to transportation infrastructure.
Structural Engineering
We offer structural design and evaluation services for new and existing structures. Our engineers specialize in concrete, steel, and timber systems for commercial buildings, bridges, and industrial facilities. Services include load calculations, material selection, and construction documentation, ensuring safety and compliance with building codes while maintaining cost-effective solutions for clients.
Land Surveying
Our professional surveyors provide boundary, topographic, and construction staking services using advanced equipment. We create ALTA/ASCM surveys, property legal descriptions, and FEMA elevation certificates. These precise measurements support land development, infrastructure projects, and property transactions while ensuring accurate implementation of design plans.
Construction Quality Control
We deliver comprehensive quality control testing for construction materials including soils, concrete, and asphalt. Our certified technicians perform field inspections and laboratory analysis to verify compliance with project specifications. This ensures structural integrity and adherence to safety standards throughout the construction process, minimizing risks and maintaining project timelines.
People
Adrienne K. Lynch
Managing Member, Civil Engineering
Licensed Professional Engineer with 30+ years of experience in civil engineering and land development. Graduated from University of Evansville in 1986, holding licenses in multiple states. Specializes in project management and regulatory compliance.
Matthew A. Schwenk
Principal Surveyor
Licensed Professional Engineer with expertise in land surveying. Graduated from University of Illinois in 1995, holding multiple state certifications. Manages boundary surveys, construction staking, and mapping projects across central Illinois.
Christopher S. Shaffer
MEP Engineering Lead
Master's degree in Agricultural Engineering with 25+ years of experience in mechanical, electrical, and plumbing systems design. Specializes in energy audits and building systems integration for commercial and industrial facilities.
Jerrel L. Shaffer
Senior Structural Engineer
University of Illinois graduate with 50+ years of experience in structural and geotechnical engineering. Provides technical oversight for complex structural designs and forensic analysis of existing structures across diverse project types.
W. David Baldwin
Drilling Operations Manager
Licensed water well driller with 30+ years of experience in subsurface investigations. Oversees drilling operations and field testing, maintaining certifications in multiple states while ensuring compliance with groundwater safety regulations.
Questions
What engineering services does SKS Engineers offer?
We provide civil, geotechnical, structural, and mechanical engineering services alongside land surveying, material testing, and construction quality control across 27 states.
How long has SKS Engineers been in business?
The firm was established in 2011, though our team collectively has over 50 years of engineering experience in central Illinois and beyond.
Which industries does SKS Engineers serve?
We work with government agencies, educational institutions, agricultural businesses, industrial clients, and commercial developers on infrastructure, building, and land development projects.
Are SKS Engineers licensed in multiple states?
Yes, we hold engineering licenses in Illinois and 26 other states, including Indiana, Missouri, and Texas, with IDOT-certified field personnel.
Does SKS Engineers handle large-scale projects?
Our team manages projects of all sizes, from small site developments to complex infrastructure systems, with in-house capabilities for comprehensive project delivery.
What makes SKS Engineers unique?
We combine multidisciplinary expertise with local knowledge, offering full-service engineering from concept through construction with a focus on technical excellence and client collaboration.