Dating back over a hundred years to 1918, PCS has a distinguished history of performing and maintaining a highly professional standard of engineering, inspection and surveying excellence.

OVERVIEW

PCS has a notable history of performing surveying, engineering, and other related design services to communities and individuals throughout the Commonwealth of Pennsylvania and the states of New Jersey, Delaware, and New York.

PCS has established and maintains a highly professional standard of engineering and surveying excellence. Our mission is to build upon this proud tradition by providing comprehensive technical expertise in a partnering environment surpassing client expectations. We accomplish this by providing a healthy work environment that allows our employees to have input, be responsible, expand their technical abilities, and grow within our company.

Our company is divided into six main service areas shown below:

Underwater

Inspection

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Bridge

Inspection

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Structural

Engineering

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Highway

Engineering

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Site

Development

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Land

Surveying

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OUR CULTURE

Since 1918, PCS has maintained a highly professional standard of engineering and surveying excellence, due in a large part to our company culture. We at PCS believe it is our mission to provide comprehensive technical expertise in our field to our clients. This is made possible by our team, as we hire the best talent in our industry and help them continue to grow and excel. We believe in maintaining a company culture that rewards our employees’ hard work and dedication by providing them with opportunities for upward mobility, as well as offering the flexibility to maintain a healthy work-life balance.

meet the team

John C. Wilhelm, P.E.
^President
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John C. Wilhelm, P.E.
^President
John C. Wilhelm, P.E. has served as President of Pickering, Corts & Summerson since 2011. Mr. Wilhelm is involved in all aspects of the firm, and has over 30 years of experience in the structural design and inspection of bridges. He is a graduate of Drexel University with a B.S. in Civil Engineering and is a registered Professional Engineer in Pennsylvania, New Jersey, Delaware, Maryland, New York, and West Virginia. John is an active member of the American Society of Civil Engineers (ASCE) and the American Society of Highway Engineers (ASHE).
James S. White, Jr.
^{Chief Operating Officer (COO)}
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James S. White, Jr.
^{Chief Operating Officer (COO)}
James “Jim” White serves as Chief Operating Officer (COO) of Pickering, Corts & Summerson, overseeing the day-to-day administrative and operational functions of the company. Jim has been with PCS for over 25 years and is a member of our Board of Directors. He is a PennDOT Certified Bridge Safety Inspector, and is responsible for the administration of all National Bridge Inspection Standards (NBIS) Inspection Agreements.
Mark A. Havers, P.E.
^{Vice President}
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Mark A. Havers, P.E.
^{Vice President}
Mark Havers joined Pickering, Corts & Summerson in 2002 and serves as Vice President and Manager of Site Engineering. Mark is a graduate of the University of Pittsburgh with a B.S. in Civil Engineering Technology, and Pennsylvania State University with a B.S. in Landscape Contracting. He is a registered Professional Engineer in Pennsylvania, New Jersey, Maryland, and West Virginia. Mark has been a PCS Board Member for over a decade.
Richard H. Stanger, P.E.
^{Vice President}
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Richard H. Stanger, P.E.
^{Vice President}
Richard “Rick” Stanger has been with Pickering, Corts & Summerson for over 25 years and serves as Manager of Transportation Design. Rick oversees the firm’s technical disciplines of structural design and highway engineering. He is a graduate of Pennsylvania State University with a B.S. in Civil Engineering and is a registered Professional Engineer in Pennsylvania, New Jersey, New York, and West Virginia. Rick has been a member of the PCS Board of Directors for over 10 years.
Aaron S. Detwiler, P.E.
^{Vice President}
^{view bio}

Aaron S. Detwiler, P.E.
^{Vice President}
Aaron Detwiler, P.E. joined Pickering, Corts & Summerson in 2007 and serves as Vice President and Bridge Inspection Project Manager. He has inspected well over 2,000 structures for PennDOT, NJDOT, USFS, DCNR and various Local Owners including the In-Depth inspections and Load Ratings of some of the region’s most complex structures. As a project manager, he has overseen various projects for PennDOT, NJDOT, and the USFS consisting of Bridge Inspection (Routine/In-Depth), Load Rating, Emergency Repair, and Rehabilitation/Replacement. Aaron has managed PCS’ Phillipsburg, NJ office since 2013.

work for us

Our History

In 1918, Edward Pickering, Jr. embarked on a mission to provide land surveying services to communities in Bucks County, PA, founding the organization that would become Pickering, Corts & Summerson, Inc.

Professional Surveyors Edward Pickering, III and Howard T. Corts expanded the firm’s services in 1953 by hiring Professional Engineer Gerald J. Summerson, forming the partnership known as Pickering, Corts & Summerson. The company focused on design and construction projects in the Bucks County region.

our founders

Edward Pickering, III
^{1910 – 1999}
Mr. Pickering was a graduate of the George School in 1929. He then studied Highway Engineering and Land Surveying through the International Correspondence School. Following his education, he was an apprentice surveyor with Charles Henry Moon, Civil Engineer.
Howard T. Corts
^{1917 – 1987}
Mr. Corts attended the International Correspondence School from 1935 to 1937, where he studied Highway Engineering, Land Surveying, and Mapping. He served as an apprentice surveyor for six years with the predecessor firm under Edward Pickering, Jr.
Gerald J. Summerson
^{1923 – 1969}
Mr. Summerson was a graduate of Worcester Polytechnic Institute in Worcester, Massachusetts where he studied Civil Engineering. He also was a graduate of the US Naval Construction Training Center in Davisville, Rhode Island.