Andrew Ritter, P.E.

Licensed in CT, MA & NY
VP of Home Operations & QA/QC
Lehigh University

Andrew joined Siefert Associates, LLC in 2010 after a combined 11 years in construction engineering and structural design. Andrew’s ability to visualize complex structures allows him to help project teams identify challenges prior to construction. Our clients turn to Andrew for creative solutions based on his comprehensive engineering knowledge, attention to detail, and hands-on experience.

Prior to Siefert Associates, LLC, Andrew spent five years in the building design and construction field. His work included designing complete foundation and framing systems, and structural reinforcements for light commercial buildings and custom homes. Andrew’s career started at Zieman Engineering, where he provided construction engineering solutions to contractors working on complex infrastructure projects. His work included designing temporary supports, temporary bracing, jacking systems, mobile crane installations, and associated custom rigging equipment. Projects included the reconstruction of I-95 in Bridgeport, CT, the Intrepid Museum pedestrian bridge erection in New York, NY, the Providence River Bridge replacement in Providence, RI, the Richmond – San Rafael Bridge seismic retrofit in Richmond and San Rafael, CA, the Triborough Bridge rehabilitation in New York, NY, and the Williamsburg Bridge rehabilitation in New York, NY.

Project Highlights

  • North Washington Street Bridge Demolition – Boston, MA

  • Green Line Extension – Somerville and Medford, MA

  • Kosciuszko Bridge Phase 2 Construction – New York, NY

  • West Thames Pedestrian Bridge Construction – New York, NY

  • Hicksville Station Improvements – Hicksville, NY

  • Quincy Center Garage Demolition – Quincy, MA

  • Construction of Various High-Rise Buildings – New York, NY

  • TD Garden North Media Wall Improvements – Boston, MA

  • Saw Mill River Parkway Bridge Replacements – Mount Kisco, NY

  • Bronx River Parkway Structural Repairs – New York, NY

  • Grand Central Parkway Structural Repairs – New York, NY

  • 12 Movable Bridges Rehabilitation – New York, NY

  • George Washington Bridge Bus Station Rehabilitation – New York, NY

  • Brooklyn Bridge Rehabilitation of Approach Spans and Ramps – New York, NY

  • I-91 Over Deerfield River Bridge Replacement – Deerfield, MA

  • 7-Line Subway Extension – New York, NY

  • East Side Access Construction – New York, NY and Long Island City, NY

  • 1 World Trade Center Construction – New York, NY

  • Throgs Neck Bridge Rehabilitation – New York, NY

  • Alexander Hamilton Bridge Rehabilitation – New York, NY

  • Brighton Line Five Stations Rehabilitation – New York, NY

Professional Engineering Licensure
  • Connecticut No. 24346

  • Massachusetts No. 46460

  • New York No. 90474

  • NCEES Record No. 46972

  • BS Civil Engineering, 1999 – Lehigh University, Bethlehem, PA

  • BA Architecture, 1999 – Lehigh University, Bethlehem, PA

Professional Achievements / Publications
  • Dale Carnegie Course – Skills for Success

  • Dale Carnegie Leadership Training for Managers

  • 2017 International Bridge Conference  - Brooklyn Bridge Ramp C Pier Replacements 


  • ASCE CI Temporary Structures Committee