3D Scanning

High-speed 3D laser scanning technology provides detailed measurement and documentation. It produces incredibly detailed three-dimensional images of complex environments and geometries.

Bridge Design

LDG has completed over 151 local bridge replacement and/or rehabilitation projects since 1989.

Bridge Inspection & Maintenance

LDG Bridge Inspectors have extensive experience completing NBIS bridge safety inspections for PennDOT and local municipalities.

Civil Engineering

Geospatial | Site & Infrastructure | Water/Wastewater

Construction Services

LDG offers a range of construction services. We have a vast knowledge of construction methodology and engineering concepts.

Covered Bridge Rehabilitation

LDG has established reputation as one of the leading covered bridge engineering firms in PA.

Energy Design and Permitting

Our Energy Division consists of experienced design professionals who have extensive boots-on-the-ground field experience.

Environmental and Ecological Services

LDG’s Environmental Specialists are fluent in the challenges involved in resolving ecological concerns when project activities interact with the environment.

Facilities & Building Engineering

LDG’s mechanical, electrical, and structural engineers provide design solutions for facilities in PA, NY, WV, TX; with security, HVAC and more.

Geotechnical Engineering

LDG offers a range of geotechnical engineering, subsidence risk analysis, and field testing services to manufacturing plants, municipalities, developers, contractors & power facilities.

GIS / Asset Management

Make better plans and smarter decisions with Geographic Information Systems. LDG provides GIS with many services that are valuable and at the cutting edge of technology.

Highway Design Engineering

LDG's Highway Design Engineering legacy is paved with successful projects of all sizes, from interstates to rural roads and multi-modal recreation trails.

Landscape Architecture

LDG’s Registered Landscape Architects (RLA) include LEED Accredited Professionals immersed in the planning, design, preservation, and management of landscape architecture projects.

LEED Consulting / Sustainable Design

Sustainable design has become a hot topic for inclusion in building projects, but many of the materials and methods have been in use for a long time.

Master Planning

Master planning isn’t just about growth, it’s about collaboration. Larson Design Group engages clients, stakeholders, and communities in a planning process.

Retail Design

Larson Design Group is more than just architects and engineers; we’re specialists with national reach who work tirelessly to cultivate brand architecture environments.

Septic Systems – Customized Design, Permitting & Landscape Solutions

Disguise a prominent sand mound with attractive landscaping


Our surveyors provide professional services for all our clients’ surveying requirements, including topographical data collection, boundary survey, etc.

Traffic Engineering

Larson Design Group (LDG) is delighted to announce the addition of Travel Demand Forecasting and Traffic Simulation Modeling to the growing list of services.

Water/Wastewater Engineering

Client-focused Water/Wastewater Engineering

New YorkOhioPennsylvaniaWest Virginia