Through our prime consultants, we serve various public and private clients throughout the Commonwealth of Pennsylvania, including:

City of Lancaster
City of Nanticoke
County of Berks
County of Bucks
County of Chester
County of Delaware
County of Montgomery
East Hempfield Township
Pennsylvania Department of Transportation
Pennsylvania Turnpike Commission
Pennsylvania Department of Conservation and Natural Resources (DCNR)
Southeast Pennsylvania Transportation Authority (SEPTA)
York County Planning Commission

We are proud of and work hard to maintain our relationships with the following consultants:

A.D. Marble & Company
Alfred Benesch & Company
Bergmann Associates
Buchart Horn, Inc.
Burns Engineering, Inc.
C.C. Johnson & Malhotra, Inc.
Cherry, Weber & Associates
Erdman Anthony
GAI Consultants
Gannett Fleming, Inc.
Gibson-Thomas Engineering Co., Inc.
H.W. Lochner
HDR Inc.
HNTB Corporation
Jacobs Engineering Group
Johnson, Mirmiran & Thompson (JMT)
Larson Design Group
L.R. Kimball (CDI)
Mackin Engineering Company
McCormick Taylor, Inc.
McMahon Associates
Michael Baker International
Modjeski and Masters
Patrick Engineering Inc.
Pennoni Associates, Inc.
Rettew Associates, Inc.
Rummel, Klepper & Kahl, LLP (RK&K)
SAI Consulting Engineers
Skelly & Loy
Sucevic, Piccolomini & Kuchar Engineering, Inc.
STV Incorporated
The Six M Company
T.Y. Lin International
Traffic Planning and Design
Urban Engineers, Inc.
Whitman Requardt and Associates, LLP
Whitney Bailey Cox & Magnani, LLC (WBCM)
WSP USA (formerly Parsons Brinckerhoff)