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50+ Years
experience
Your Trusted Partner for Engineering and Surveying Solutions
Founded in 1969, Harper-Leavitt Engineering (HLE) has built a reputation as a trusted full-service consulting engineering, surveying, and materials testing firm. Our team brings over 158 years of combined experience, serving clients across Idaho, Montana, Utah, and Wyoming with personalized service and technical expertise. We prioritize honesty, integrity, and innovation, leveraging cutting-edge technology to deliver efficient, accurate solutions for civil, structural, and geotechnical projects. Our commitment to excellence is rooted in the values of our founders, ensuring every project meets the highest standards of quality and client satisfaction. With offices in Blackfoot and Idaho Falls, we provide rapid response times and tailored engineering services for both urban and remote locations.

Our multidisciplinary team excels in transportation, water systems, land development, and construction oversight, maintaining strong relationships with public agencies, developers, and corporations. We emphasize teamwork, accountability, and continuous improvement, fostering a culture where diverse strengths converge to achieve common goals. From initial design to project completion, we focus on detailed planning, cost-effectiveness, and long-term asset sustainability. Our engineers and surveyors hold professional licenses and certifications, ensuring compliance with industry standards like ASTM for materials testing. By combining decades of experience with modern methodologies, we empower clients to realize their vision through reliable, forward-thinking engineering solutions.
Services
Structural Engineering Civil Site Plans Geotechnical Surveys Water Systems Design Construction Staking Boundary Surveys Materials Testing Transportation Projects Land Development 3D Scanning
Details
  • Year established: 1969
Highlights and features
  • We offer 54 years of engineering expertise across Idaho, Montana, Utah, and Wyoming.
  • Our team holds professional licenses in multiple states with specialized certifications.
  • We integrate advanced technology for precision in surveying and materials testing.
  • Our engineers deliver full project lifecycle management from design to construction.
  • We maintain strict adherence to ASTM standards for laboratory testing quality.
Associations and certifications
  • ASTM International
Services
Structural Engineering
We provide comprehensive structural design and analysis for bridges, buildings, and infrastructure. Our engineers ensure compliance with safety standards while optimizing material efficiency and cost-effectiveness. With expertise in federal and state projects, we deliver solutions from concept to construction oversight.
Geotechnical Surveys
Our geotechnical investigations assess subsurface conditions for foundations, retaining walls, and earthworks. Using core sampling and lab testing, we provide data-driven recommendations to mitigate risks and ensure structural stability, adhering to ASTM standards for accuracy.
Civil Site Plans
We create detailed site plans for commercial, residential, and municipal projects. Our full-service approach includes utility design, grading, and stormwater management, ensuring seamless coordination between architects, municipalities, and developers for regulatory compliance.
Water Systems Design
We design efficient water distribution systems, storage tanks, and treatment facilities. Our focus on long-term asset sustainability minimizes maintenance costs while ensuring reliable service for communities and industries through GIS integration and modern infrastructure planning.
Construction Staking
Our surveyors use GPS and 3D scanning for precise construction layout. Services include boundary resolution, topographic mapping, and as-built documentation, supporting highway, pipeline, and land development projects with accurate field data for successful implementation.
People
B. Luke Jolley
President Chief Engineer
Registered Professional Civil Engineer with over 20 years of experience in transportation, geotechnical, and water systems. Oversees civil projects in Idaho, ensuring quality designs and client satisfaction through detailed planning and construction oversight.
Clint Jolley
Vice President Survey Manager
Licensed Professional Land Surveyor with 20+ years of expertise in highway construction, boundary surveys, and GPS technology. Manages Idaho Falls operations, delivering precise surveying solutions for private and government clients across Idaho.
Chris Street
Treasurer Survey Manager
Survey Manager in Blackfoot with 20 years of experience in topographic surveys, boundary resolution, and construction staking. Coordinates large-scale projects in Idaho, Montana, and Wyoming, ensuring adherence to state job standards and client requirements.
Anthony Koon
Project Engineer
Lead Structural Engineer with 28 years of experience in project management and structural design. Specializes in bridge and building projects, integrating conceptual design through construction to deliver safe, code-compliant structures for federal and state agencies.
Spence Ward
Project Engineer
Civil engineer with expertise in water systems, wastewater, and irrigation projects. Manages grants and coordinates stakeholders to achieve efficient infrastructure solutions, combining technical knowledge with strong client and contractor collaboration skills.
Questions
What engineering services does Harper-Leavitt Engineering offer?
We provide civil, structural, and geotechnical engineering, surveying, and materials testing services for transportation, water systems, land development, and infrastructure projects.
Which states does HLE serve?
HLE operates in Idaho, Montana, Utah, and Wyoming, with offices in Blackfoot and Idaho Falls to support regional clients.
How does HLE ensure project quality?
We combine 54 years of experience with modern technology, licensed professionals, and ASTM-certified materials testing to deliver accurate, reliable engineering solutions.
Can HLE handle federally funded projects?
Yes, our team manages federal projects including ITD, Bureau of Reclamation, and FHWA western lands initiatives with grant writing and compliance expertise.
What surveying technologies does HLE use?
We employ Trimble GPS equipment, 3D scanning, and drone-based aerial mapping for precise boundary, topographic, and construction surveys.