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Business Details
35 Years
experience
Your Trusted Partner for Engineering Solutions in Pennsylvania
Keller Engineers, founded in 1991, is a client-focused engineering firm specializing in civil and structural engineering, surveying, and environmental services. Our team of over 70 professionals combines state-of-the-art technology with decades of experience to deliver high-quality, budget-conscious solutions for public and private clients. We prioritize understanding client needs to create innovative designs that address complex challenges while enhancing communities. With a track record of over 30 years, we maintain ongoing professional training and utilize advanced engineering tools to ensure project success. Our commitment to excellence has fostered long-term relationships with clients who value our expertise in land development, transportation, and infrastructure projects.

We emphasize transparency, technical precision, and timely delivery across diverse sectors including healthcare, education, and commercial development. Our multidisciplinary approach integrates engineering, environmental planning, and landscape architecture to create sustainable, community-focused outcomes. Recognized for our work on projects exceeding $150 million, we continue to build trust through consistent performance and peer-respected service delivery.
Services
Bridge Inspection Construction Inspection Energy Projects Environmental Services GIS Mapping Land Development Structural Survey Transportation Wastewater Water Systems
Details
  • Year established: 1991
Highlights and features
  • We offer over 30 years of experience in civil and structural engineering
  • Our team provides state-of-the-art equipment and techniques
  • We maintain ongoing professional training for all staff members
  • Our multidisciplinary approach integrates engineering and environmental planning
  • We guarantee timely project delivery within construction budgets
What people say
Exceptional service Timely delivery Technical expertise Community-focused designs Budget-conscious solutions
Services
Bridge Inspection
Our certified engineers conduct comprehensive bridge inspections using advanced diagnostic tools and safety protocols. We evaluate structural integrity, identify maintenance needs, and provide detailed reports for regulatory compliance. Our team has completed inspections on highway and railway bridges across Pennsylvania.
Land Development
We offer end-to-end land development services including zoning analysis, site design, and utility coordination. Our solutions balance environmental considerations with client objectives while ensuring regulatory compliance. Projects range from commercial developments to residential subdivisions.
Environmental Services
Our environmental specialists provide planning, permitting, and remediation services for development projects. We integrate sustainable practices like rain gardens and stormwater management systems to minimize ecological impact while meeting client needs.
Transportation
We design transportation systems including roads, highways, and pedestrian pathways. Our work encompasses traffic analysis, safety improvements, and multimodal connectivity solutions that enhance community mobility and economic development.
Structural Survey
Our surveyors use precision instruments to assess structural conditions and create detailed documentation. Services include foundation analysis, elevation surveys, and construction layout services that support both new builds and renovation projects.
People
Joseph G. Keller
Founder
Joseph G. Keller established the firm in 1991 with a vision for client-focused engineering solutions. As a licensed professional engineer, he continues to guide the company's strategic direction while mentoring technical staff.
Adam Long
RLA
Adam Long, a registered landscape architect, specializes in site development and environmental planning. He leads design teams in creating functional spaces that integrate natural elements with infrastructure requirements.
Brian Smith
PE
Brian Smith, a licensed professional engineer, oversees structural projects and technical quality control. With expertise in complex site conditions, he develops innovative solutions that balance engineering standards with client budgets.
Dr. Alice Plummer
Client Representative
Dr. Alice Plummer coordinates client relationships for healthcare facility projects. Her background in medical planning ensures designs meet both regulatory requirements and operational needs of healthcare providers.
Richard L. Karcher
AIA, NCARB
Richard Karcher collaborates with architectural teams on integrated design solutions. As a licensed architect with NCARB certification, he ensures engineering and architectural elements work cohesively in complex development projects.
Questions
What engineering services does Keller Engineers offer?
We provide civil and structural engineering, surveying, environmental planning, GIS mapping, transportation design, and water/wastewater system solutions.
How long has Keller Engineers been in business?
Our firm has delivered engineering solutions since 1991, with many clients maintaining relationships for over 30 years.
What industries do you serve?
We work with public agencies and private clients across healthcare, education, commercial development, and infrastructure sectors.
Do you handle large-scale infrastructure projects?
Yes, our team has managed projects exceeding $150 million in value, including transportation systems and municipal infrastructure.
Where are your offices located?
We operate from three Pennsylvania locations: Hollidaysburg, State College, and Gettysburg.
Reviews (1)
Matt Joseph
Jan 22, 2018 Report
I was at Keller Engineering job shadowing through a high school program. The staff was quite friendly and seemed passionate about their careers. They look more than well equipped to take on almost any task thrown at them. Their large team allowed them to use each other's strengths, which they seemed to do quite well.