Pickering, Corts & Summerson (PCS) delivers award winning multi-discipline civil engineering services from our four office locations in Pennsylvania and New Jersey.

Service excellence

^since

1918

Craine

Featured Projects

Mill Street Wharf Bucks County, PA
^{Site Development}
Inspection of Bridges in Philadelphia, PennDOT District 6-0
^{Bridge Inspection}
Decade of Investment Bridge Preservation Projects, Open-End Design, PennDOT District 8-0
^{Structural Engineering}
Villas at Newtown, 179 Residential Homes, Bucks County, PA
^{Site Development}
Main Street over Tributary to Neshaminy Creek, Bucks County, PA
^{Structural Engineering}
SR 4069, Section 01B Lehnenberg Road, PennDOT District 6-0
^{Structural Engineering}
SR 0080, Section 10S Monroe County, PennDOT District 5-0
^{Highway Engineering}
Underwater Bridge Safety Inspections for the Cape May County Bridge Commission
^{Underwater Inspection}
Mayburg Bridge Repair-Design and Engineering Services, Allegheny National Forest
^{Structural Engineering}
Inspection and Load Rating of 240 State-Owned Bridges, PennDOT District 8-0
^{Bridge Inspection}
SR 0033, Section 006 (Design-Build) Northampton County, PennDOT District 5-0
^{Highway Engineering}
SR 0078, Section 12B Berks County, PennDOT District 5-0
^{Highway Engineering}

view all projects

Our Services

Bridge Inspection
Underwater Inspection
Structural Engineering
Highway Engineering
Site Development
Land Surveying

View all services

bridge

latest updates

New

Open Role - Transportation Design Project Engineer
^{Newtown, PA}
Blog - Paul Klemunes, P.E. Promoted to Vice President
^{Nov 14}
Open Role - Survey Manager
^{Newtown, PA}
Open Role - Senior Surveyor (PLS)
^{Newtown, PA}
Open Role - Commercial Diver / Inspector
^{Newtown, PA}
New

Open Role - Bridge Inspection Team Leader (PA)
^{Camp Hill, PA}
New

Blog - Mark Bredl, P.E., Former PennDOT District 1-0 Assistant Bridge Engineer, Joins PCS
^{Mar 8}
Blog - PCS Announces the Opening of a New Office Location Near Pittsburgh, PA
^{Mar 7}
Blog - PCS Welcomes New Hires
^{Mar 3}
New

Blog - Thanks for Visiting PCS at the International Bridge Conference (IBC) 2022!
^{Jul 22}
New

Blog - Stop by the PCS Booth #121 at the International Bridge Conference (IBC) 2022!
^{Jul 15}
New

Blog - Kamlesh Ashar, P.E., Former PennDOT District 5-0 Bridge Engineer, Joins PCS
^{Jun 1}
Blog - PCS Get to Know: Christopher Wells
^{Mar 25}
Blog - PCS Wins Three PennDOT Projects
^{Mar 4}
Blog - PCS Welcomes New Hires
^{Feb 21}
New

Open Role - Entry-Level Engineer / Bridge Inspector (Newtown)
^{Newtown, PA}
New

Open Role - Entry-Level Engineer / Bridge Inspector (Phillipsburg)
^{Phillipsburg, NJ}
Blog - Aaron Detwiler, P.E. and Mark Havers, P.E. Promoted to Vice President at PCS
^{Jan 18}
Blog - PCS Announces 2021 Employee Milestones
^{Jan 3}
Blog - PCS Wins Statewide Underwater Bridge Inspections Project for PennDOT
^{Dec 17}
Blog - PCS Performs Underwater Bridge Inspections for DRJTBC
^{Dec 3}
Blog - Stop by the PCS Booth #54 at APC Fall Seminar 2021!
^{Nov 17}
Blog - PCS Thanks Our Veterans
^{Nov 11}
Blog - PCS Completes Post-Hurricane Ida Flood Inspections for PennDOT
^{Oct 18}
Blog - PCS Receives 39th Annual Road/Bridge Safety Improvement Award for Yost Road Bridge Project
^{Oct 8}
Blog - PCS Get to Know: Cindy Vergara
^{Sep 24}
Blog - PCS Awarded Bridge Inspection Project for Montgomery County by PennDOT
^{Aug 2}
Blog - PCS Get to Know: Liz Bocskay
^{Jun 18}
Blog - PCS Examines I-95 Bridge After Emergency Shutdown
^{May 28}
Blog - PCS Wins 2021-2022 General Engineering Contract for DRJTBC
^{May 21}
Blog - PCS Get to Know: Phil Mosby, P.L.S.
^{Apr 9}
Blog - PCS Get to Know: Tyler Quill
^{Feb 11}
Blog - PCS Announces Employee Milestones
^{Jan 25}
New

Open Role - Bridge Inspection Team Leader (NJ)
^{Ewing, NJ}
New

Open Role - Bridge Inspection Team Leader (PA)
^{Newtown, PA}
Blog - Bucks County Community College Slated to Begin Construction on New Technologies Facility
^{Dec 23}
Blog - PCS Welcomes New Hires
^{Dec 7}
Blog - Yost Road over Stony Brook Tributary, Whitpain Township, Montgomery County
^{Oct 19}
Blog - PCS Wins Bridge Engineering Project with the PA DCNR
^{Sep 18}
Blog - PCS Get to Know: Jenna Herbst, P.E.
^{Sep 11}
Blog - PCS Performs Hydrographic Survey in Philadelphia
^{Sep 3}
Blog - PCS Performs Post Flood Bridge Inspections
^{Aug 14}
Blog - PCS Inspectors Perform Emergency Inspection of the Vine Street Bridge In Philadelphia
^{Aug 7}
Blog - PCS Wins Bridge Engineering Design Project with Sussex County
^{Jul 31}
Blog - PCS Get to Know: Ted Tuz, P.E.
^{Jul 17}
Blog - Alan Jackson Retires from PCS
^{Jul 8}
Paul Klemunes is a Bridge Inspection Project Manager & Project Engineer. He also manages PCS' Harrisburg, PA office. - PCS Get to Know: Paul Klemunes, P.E.
^{Jun 5}
Blog - PCS Wins Underwater Bridge Inspection Project with PennDOT
^{May 29}
Blog - PCS Get to Know: Aaron Detwiler, P.E.
^{Apr 17}
Blog - PCS Announces New Office to Open in Ewing
^{Apr 2}
Blog - Jim White Promoted to Chief Operating Officer at PCS
^{Jan 29}
Blog - PCS Wins Inspection Project With PennDOT
^{Dec 2}
- John C. Wilhelm, P.E.
^President
^{view bio}

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)}
^{view bio}

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}
^{view bio}

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}
^{view bio}

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.

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