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Business Details
41 Years
experience
Trusted Construction Solutions in Warners, NY
Slate Hill Constructors was founded in 1985 with a vision to deliver innovative construction solutions across Upstate New York. Starting with minimal resources, we have grown into a team of 50+ professionals equipped with advanced machinery to handle infrastructure projects ranging from $100,000 to $30 million. Our expertise spans highway construction, bridge rehabilitation, drainage systems, and environmental projects, with a proven track record of completing work on time and under budget. Our leadership team holds decades of experience in traffic control, excavation, concrete construction, and erosion management. As licensed professional engineers in New York State, we prioritize safety, environmental responsibility, and cost-effective problem-solving.

Our mission focuses on delivering quality projects while supporting employee growth and industry excellence. We specialize in mitigating risks for complex projects through innovative approaches that address unknown variables. Our commitment to safety and environmental stewardship remains central to every project. With a history of successful public and private sector collaborations, we continue to build infrastructure that serves communities for decades. Our engineering-driven approach ensures technical precision in every construction phase.
Services
Highways & Roads Bridge Construction Drainage Infrastructure Site Development Environmental Projects
Details
  • Year established: 1985
Highlights and features
  • We have 38 years of experience in Upstate New York infrastructure projects
  • Our leadership team includes licensed professional engineers in New York State
  • We specialize in cost-effective solutions for complex construction challenges
  • We maintain a perfect safety compliance record across all projects
  • We combine engineering expertise with hands-on construction experience
Associations and certifications
  • Licensed Professional Engineers (New York State)
Services
Highway Construction
We construct and maintain highways and roadways with specialized expertise in excavation, earthwork, and asphalt/concrete paving. Our team handles complex traffic control and utility coordination for minimal disruption. Projects include major highway expansions and surface improvements across Upstate New York.
Bridge Construction
Our bridge construction services include new builds and rehabilitation projects using steel, precast, and concrete materials. We specialize in accelerated bridge replacement techniques and cofferdam installations. Recent projects feature deck overlays and structural reinforcements meeting modern safety standards.
Drainage Infrastructure
We design and implement comprehensive drainage solutions including culverts, retention systems, and water diversion structures. Our expertise covers erosion control measures and stormwater management systems for both urban and rural environments across various terrain types.
Site Development
We provide full-scale site development services including grading, utility installation, and environmental remediation. Our work prepares land for commercial, industrial, and residential use while maintaining strict environmental compliance throughout the development process.
Environmental Projects
Our environmental construction services focus on sustainable practices and regulatory compliance. We execute projects involving erosion control, habitat preservation, and contaminated site remediation while balancing infrastructure needs with ecological protection requirements.
People
Jeffrey Hanlon
Founder
Jeffrey Hanlon founded Slate Hill Constructors in 1985 with a pickup truck and air compressor. His engineering background and construction expertise have driven the company's growth into a leading regional contractor with 50+ employees and specialized equipment.
Questions
What types of construction projects do you specialize in?
We specialize in highway construction, bridge building, drainage infrastructure, site development, and environmental projects across Upstate New York.
What project sizes do you handle?
We manage projects ranging from $100,000 to $30 million, adapting our approach to each project's specific requirements and complexity.
How do you ensure project safety and environmental compliance?
Our safety-first approach includes dedicated compliance officers, regular training, and environmental mitigation plans developed in collaboration with regulatory agencies.
What makes your company different from other contractors?
Our engineering-driven approach, licensed professional staff, and proven track record of completing complex projects under budget set us apart in the industry.