Find engineering consulting firms by capability and location.

Advanced Infrastructure Design, Inc. (AID) is a consulting engineering practice established in 1998. Headquartered in Hamilton, New Jersey, with an office in Philadelphia, Pennsylvania, it is staffed by licensed Professional Engineers, scientists, researchers, and technicians. The practice specializes in transportation infrastructure preservation, deploying advanced non-destructive testing (NDT) technologies to evaluate and design solutions for roads, bridges, tunnels, airports, substructures, foundations, and parking structures. It is led by President Mojgan Mohtashami, PhD, MBA.

Bridging grace and imagination with functionality while delivering pragmatic solutions.

Partners in Reliability, Resilience, Innovation, Sustainability, and Safety

Exceptional Engineering. Innovative Construction Services. Dedicated to Our People.

Knowledge-Based Engineers & Management Consultants

A Proven Leader in Utility Engineering

Your Foundation for Success

Your Structure. Our Solution.

Keast & Hood is a Philadelphia-based structural engineering firm with more than 70 years of experience providing design-forward solutions for new construction, historic preservation, building envelope assessment, and structural investigations. Headquartered in Center City, its work spans the Northeast and includes high-profile colleges and universities, cultural institutions, civic buildings, and healthcare facilities.

Evaluate - Solve - Deliver

Larsen & Landis is a structural engineering firm serving architects, developers, designers, contractors, and building owners across the Philadelphia and Wilmington region. Its engineers handle structural design, evaluation of existing structures, construction support, historic preservation assessments, and facade reviews across a wide range of building types including educational facilities, multi-family housing, religious buildings, commercial properties, industrial facilities, and research laboratories.

Engineering excellence for structures and enclosures.

Leake Engineering, LLC is a multi-discipline engineering consulting practice headquartered in Philadelphia, Pennsylvania, with licensure in all 50 states. Originating in 2007 on Leake Avenue in New Orleans near the Army Corps of Engineers district during post-Katrina rebuilding, the practice subsequently relocated its primary operations to the Greater Philadelphia area. It serves commercial, residential, multi-family, industrial, and government clients nationwide. Core services span structural engineering, civil engineering, geotechnical investigations, and field inspection services.

Your Engineering Partner For Tomorrow's Innovations

applied ingenuity

We Make a Difference

One of the world's leading bridge engineering practices

Built on firm foundations

Innovative and Technology for Tomorrow's World

Local Expertise. National Reach.

Designing your vision, one detail at a time.

Trusted Quality

Structural Engineering & Consultants

Partners for What's Possible