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
  • 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

Our Services

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