Business Details
40 Years
experience
Engineering Services in Biddeford, ME
Since 1986, R W Gillespie & Associates has been committed to delivering reliable, sustainable, and resilient infrastructure across New England. Our team of geotechnical engineers and construction materials testing specialists provides expertise in subsurface analysis, quality assurance, and environmental consulting. We prioritize safety, integrity, and collaboration, ensuring clients manage project uncertainties while minimizing delays and costs. With direct involvement from our principals and associates, we combine decades of field experience with technical excellence to support smarter design and stronger construction outcomes.Our AASHTO-certified laboratory and nationally recognized code compliance expertise further reinforce our commitment to quality. By fostering a culture of continuous improvement and teamwork, we aim to create lasting value for clients and communities through innovative engineering solutions.
Services
Geotechnical Engineering
Materials Testing
Environmental Consulting
Special Inspections
Foundation Analysis
Slope Stability Evaluations
Groundwater Monitoring
Construction Observation
Laboratory Testing
Subsurface Investigations
Details
- Year established: 1986
Highlights and features
- We have over 35 years of experience in geotechnical engineering and materials testing.
- Our team consists of certified experts with extensive field experience.
- We provide comprehensive services including geotechnical engineering, materials testing, and environmental consulting.
- Our regional focus ensures deep understanding of New England's subsurface conditions.
- We maintain a collaborative culture with direct involvement of principals in every project.
Associations and certifications
- NETTCP
- NICET
- ICC
- PCI
- ACI
- Maine Department of Transportation
- AASHTO Resource
- CCRL
Services
Geotechnical Engineering
Our geotechnical engineering services identify soil, groundwater, and bedrock risks to prevent construction delays. We provide foundation evaluations, slope stability assessments, and site investigations to ensure structural integrity. With decades of regional experience, we deliver data-driven solutions for projects ranging from airports to waterfront facilities.
Materials Testing
We conduct field and laboratory testing of soils, concrete, asphalt, and structural materials to verify compliance with safety and performance standards. Our AASHTO-certified lab performs over 40 tests, including compressive strength analysis and permeability assessments. Certified technicians ensure quality control from design through construction phases.
Environmental Consulting
Our environmental consultants help clients balance development with ecological protection through wetland monitoring, groundwater assessments, and wastewater disposal planning. We provide environmental site assessments and compliance services for projects in sensitive areas, ensuring adherence to regulatory requirements while minimizing ecological impact.
Special Inspections
We verify structural components meet design specifications through inspections of concrete, masonry, steel, and fireproofing systems. Our services include pre-stressed concrete evaluations and hot mix asphalt plant monitoring. Certified inspectors ensure compliance with ASTM, AASHTO, and state building codes during critical construction phases.
Construction Observation
Our team documents construction practices and material quality through earth fill compaction tests, pile driving monitoring, and settlement analysis. We provide real-time feedback to align with design intent, ensuring long-term performance of infrastructure projects like roads, retaining walls, and underground utilities.
Questions
What services does R.W. Gillespie & Associates offer?
We provide geotechnical engineering, materials testing, environmental consulting, special inspections, and construction observation services for infrastructure projects.
How long has the company been in business?
R.W. Gillespie & Associates has delivered engineering solutions since 1986, with over 35 years of regional expertise in New England.
Which areas do you serve?
We operate throughout New England, including Maine, New Hampshire, Massachusetts, Rhode Island, and Vermont.
What certifications do your staff hold?
Our team holds certifications from NETTCP, NICET, ICC, ACI, and AASHTO, with specialized firestop and materials testing accreditations.
How do you ensure project quality?
We combine field testing, AASHTO-certified laboratory analysis, and structural compliance inspections to verify materials and construction practices meet standards.
What industries do you work with?
We serve aviation, commercial, education, energy, government, healthcare, mining, and telecommunications sectors with multidisciplinary engineering support.
