Our Company

Stahl Sheaffer Engineering, LLC is a multi- discipline civil engineering firm specializing in bridge design and inspection, construction inspection, transportation and traffic engineering, surveying, municipal engineering services, land development, building structural engineering, and oil and gas well services.

The 75-person company was founded in 2006 by principals Rod Stahl, PE, and Jeffery Sheaffer, PE. In 2007 Aaron Fayish, PE. PTOE joined the firm with extensive experience in transportation engineering.  Doubling in growth for the first several years, Stahl Sheaffer quickly became a multi-million dollar company, building on its commitment to client satisfaction to gain more projects and put people to work, even in a depressed economy. The firm’s diversified market strategy ensures stability and ongoing growth. Clients include oil and gas companies, universities, local and state agencies, municipalities, and many private clients throughout Pennsylvania. Many projects are pursued via teaming arrangements with architects, construction companies, planning and design companies, and other engineering firms. The firm is currently expanding into New York, Ohio, and West Virginia. Principals Rod Stahl, PE, Jeffery Sheaffer, PE, and Aaron Fayish, PE, PTOE lead operations based in State College, Selinsgrove, and McMurray, PA, respectively.

Our Services

Our licensed engineers, surveyors, construction managers, and inspectors have worked extensively with both public and private clients. With 75 employees, we can provide a dedicated project team with the necessary skills and expertise to meet requirements with quality and professionalism. And our small business stature allows us to remain agile and responsive to our clients and partners with the flexibility to create the most cost effective approach.

We offer extensive services in:

Our Leaders



Rod Stahl, Principal, P. E.

Rod Stahl graduated from The Pennsylvania State University with a B.S. in Civil Engineering, and is a licensed professional engineer in Pennsylvania. Rod manages the State College office of SSE and oversees land   development, municipal engineering, construction management, and traffic engineering. He has extensive experience in municipal capital improvement projects including road rehabilitation, drainage improvements, building additions, park construction/improvements, traffic signal installation, and annual  maintenance.

Jeffery Sheaffer, Principal, P. E., C.B.S.I.

Jeff Sheaffer graduated from the Johns Hopkins University in 1990 with a B.S. in Civil Engineering, and is a licensed professional  engineer in Pennsylvania and New York. Jeff manages the Selinsgrove office of SSE and oversees the design of bridge and highway projects, building structural design, and bridge and sign structure inspections. He has extensive experience in load factor and LRFD design and PENNDOT plan development, bridge condition inspection, and bridge and highway construction inspection.

Aaron  C. Fayish, Principal, P. E., PTOE

Aaron C. Fayish has earned B.S. and M.S. degrees from The Pennsylvania State University in Civil Engineering. He is a registered professional engineer (P.E.) in PA and a certified professional traffic operations engineer (PTOE) by the Institute of Transportation Engineers. Aaron leads the company’s efforts in transportation engineering and is responsible for projects related to traffic studies, signal timing and optimization, traffic calming, and safety studies. Aaron also leads SSE’s transportation division focused on serving the oil and gas industry in PA, OH, WV, and NY. He has presented transportation-related research at national conferences and co-authored peer-reviewed papers on Intelligent Transportation Systems (ITS) and safety for the Transportation Research Board.

Michael  Marso, Director of Operations, Business Development, Construction Management

Mike Marso has a B.S. in Civil Engineering from The Pennsylvania State University, and 30 years of experience in construction management and inspection, design, and environmental services. He possesses extensive project experience with PennDOT and the Pennsylvania Turnpike Commission—including the construction management of nine miles of the  Pennsylvania Turnpike, a $57-million reconstruction project located in New Stanton, PA. Mike leads efforts related to business development throughout Pennsylvania, West Virginia, New York, and Ohio. 

Our Staff

SSE’s 75 employees provide a broad range of expertise and personal experience.  Those employees provide our clients with the following strength and expertise:

  • 11 Professional Engineers (P.E.)
  • 1 Professional Land Surveyor (P.L.S.)
  • 1 LEED Accredited Professional (LEED AP BD+C)
  • 1 Professional Traffic Operation Engineers (PTOE)
  • 5 Certified Bridge Safety Inspectors (C.B.S.I.)
  • 2 Geotechnical Designers
  • 16 Certified Construction Inspectors
  • 20 Drafting Technicians/Designers
  • 3 Computer Programming/GIS Specialists
  • 10 Engineers in Training (E.I.T.)
  • 1 Surveyor in Training (S.I.T.)
  • 1 Environmental Scientist


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