Business Details
14 Years
experience
Professional Structural Engineering Services in Flagstaff
Founded in 2012 by Bob Hubbard and Dave Merrell, Hubbard Merrell Engineering brings over 80 years of combined industry experience to structural engineering challenges. Our team of registered professional engineers, certified experts, and dedicated staff specializes in delivering innovative structural solutions for commercial, residential, industrial, and aerial adventure projects. With professional registrations in 31 states, we combine deep technical expertise with localized knowledge of Southwest building codes and conditions. Our commitment to excellence is demonstrated through client partnerships spanning decades, including collaborations with TOR Engineering since 1999.We distinguish ourselves through rapid response times, on-site consultation capabilities, and proprietary Zip Design Tools that optimize aerial adventure course engineering. Our values of professionalism, integrity, flexibility, and growth guide every project, from residential remodels to 500kV substations, ensuring clients receive technically sound solutions that meet both regulatory requirements and operational needs.
Services
Structural Engineering
Aerial Adventure Course Design
Zip Line Engineering
Challenge Course Design
Reverse Engineering
Conceptual Design
Project Documentation
Structural Inspections
Design Audits
Construction Administration
Details
- Year established: 2012
Highlights and features
- Over 80 years combined engineering experience with 31-state professional registrations
- Proprietary Zip Design Tools for optimized aerial adventure course engineering
- Proven track record with 100+ aerial project completions since 2010
- Rapid response times and on-site consultation during all project phases
- Deep understanding of Southwest regional building codes and conditions
What people say
Professional, pleasant, punctual
Depth of expertise
Flexibility and communication
Best engineering services
Instrumental in completing the project
Services
Structural Engineering
Our structural engineering services cover commercial, residential, and industrial projects nationwide. We provide complete design solutions from foundations to heliports, ensuring code compliance and structural integrity. Our 31-state registered engineers deliver cost-effective solutions for projects ranging from home remodels to major hospital additions.
Aerial Adventure Course Design
Specialized engineering for aerial adventure facilities including zip lines, challenge courses, and ropes courses. Our team combines technical expertise with industry-specific knowledge to create safe, innovative designs that meet ASTM and USFS standards across all 50 states.
Zip Line Engineering
Comprehensive zip line engineering services featuring route optimization, speed analysis, and regulatory documentation. Using proprietary Zip Design Tools, we simulate system performance and deliver complete structural designs for new installations or existing system evaluations in all 50 states.
Reverse Engineering
We analyze existing structures and systems to create accurate engineering documentation. This service supports renovation projects, code compliance verification, and performance optimization for both traditional buildings and aerial adventure facilities nationwide.
Conceptual Design
Early-stage design services that establish project feasibility and parameters. Our conceptual designs incorporate technical requirements, budget considerations, and regulatory factors to create practical foundations for both building projects and aerial adventure courses across the United States.
People
David S. Merrell
Principal / Owner
Structural engineering leader with extensive aerial adventure course experience since 2010. Oversees all engineering production and client coordination for the firm's diverse project portfolio.
Geoffrey D. Wertz
Senior Project Manager / Owner
Flagstaff native with advanced engineering degree who manages projects from proposal to completion. Joined ownership team in 2025 after a decade of successful project delivery.
Jamie L. Miele
Business Manager / Owner
25-year civil engineering industry veteran who joined ownership in 2025. Manages business operations while maintaining deep understanding of engineering service requirements.
Samantha Olson
Project Designer
Structural designer with four years of experience across multiple sectors. Oversees design projects under senior engineer supervision and manages intern staff.
Robert A. Hubbard
Founder / Retired
Co-founder with structural engineering experience dating to 1981. Now retired but continues to provide occasional consultation to the team he helped establish.
Questions
What engineering services do you specialize in?
We provide structural engineering for buildings and aerial adventure courses including zip lines, challenge courses, and ropes courses across 31 states.
Do you work on residential projects?
Yes, we handle residential structural engineering from remodels to custom homes up to 20,000 sq ft.
What makes your aerial course design unique?
Our proprietary Zip Design Tools optimize system performance while our 31-state registrations ensure regulatory compliance nationwide.
How long have you been in business?
Founded in 2012 by former TOR Engineering partners with combined experience dating to 1981.
Can you handle industrial engineering projects?
Yes, we design industrial buildings and equipment foundations including 500kV substations and hydro dams.
