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What We Do

What We Do

Siefert Associates is the premier construction engineering firm in the NYC-Metro area and beyond.

LICENSED IN CA, CT, DE, FL, IN, MA, MD, ME, MI, NE, NJ, NY, PA, RI, VA, VT & WA


Siefert Associates, LLC has steadily grown to be the Professional Engineering firm of choice. We have assembled a team of capable leaders with over 150 years of hands on experience working in the field as Engineers, Superintendents and Project Managers. The entire organization is highly dedicated to providing our clients with quality work and delivering on time.



Structural Engineering
Demolition Engineering
Erection Engineering
Geotechnical Engineering
Accelerated Bridge Construction Engineering
Heavy Lift and Rigging Engineering
Additional Engineering Services

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