
A&A Consultants Inc
McKees Rocks, PASpecializing in geotechnical, structural, and civil engineering excellence
Project: Big Beaver Bridge
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Specializing in geotechnical, structural, and civil engineering excellence
Project: Big Beaver Bridge
Civil, Coastal, and Environmental Engineering and Consulting Practice
Project: Arney's Mount West Trail
ACT ONE & Associates is a consulting engineering and land surveying firm established in 2012 and based in Harrisburg, Pennsylvania. Licensed in Pennsylvania as Professional Engineers, Professional Land Surveyors, and a Sewage Enforcement Officer, the firm serves builders, contractors, developers, individual property owners, institutions, and municipalities with a broad range of civil, environmental, and structural engineering services.
Service detail: Land Surveying

Designing America's Energy Lifelines
Service detail: Chemical and Process Design

Engineering, Surveying, and Inspections
Project: 95REVIVE Pottstown Expressway Reconstruction

Precise. Responsive. Solutions.
Project: Annapolis Landfill Solar

Your trusted partner for municipal engineering.
Project: Upper Uwchlan Township Municipal Authority Administrator
Quality, innovative, and cost-effective consulting engineering solutions
Service detail: Geotechnical Engineering
Innovation. Integrated
Project: Strategic Facility Planning

Your project is our priority.
Service detail: Geotechnical Engineering

Utility Engineering & Infrastructure Design
Service detail: Utility Engineering Design

Advanced Infrastructure Design, Inc. (AID) is a consulting engineering practice established in 1998. Headquartered in Hamilton, New Jersey, with an office in Philadelphia, Pennsylvania, it is staffed by licensed Professional Engineers, scientists, researchers, and technicians. The practice specializes in transportation infrastructure preservation, deploying advanced non-destructive testing (NDT) technologies to evaluate and design solutions for roads, bridges, tunnels, airports, substructures, foundations, and parking structures. It is led by President Mojgan Mohtashami, PhD, MBA.
Service detail: Pavement Engineering
A focused leader in Aviation Consulting Services since 2006

All County and Associates, Inc. (ACA) is a full-service civil engineering, land surveying, and environmental permitting firm established in 1992 and located in Gilbertsville, Pennsylvania. ACA serves clients across fifteen counties in eastern Pennsylvania, covering Berks, Bucks, Carbon, Chester, Delaware, Lackawanna, Lancaster, Lehigh, Luzerne, Montgomery, Monroe, Northampton, Pike, Schuylkill, and southern Wayne counties. The practice serves architects, builders, contractors, developers, homeowners, home inspectors, and real estate agents with a focus on helping clients navigate permitting and regulatory processes.
Service detail: Civil Engineering

Professional Consulting Services
Project: Flat Top Lake Dam
Transforming Our Environment and Communities, with Integrity and Vibe
Project: Hancock County Marsh Living Shoreline

Excel. Together.
Project: Bloomingdale Road Reconstruction

Dams, Levees, Severe Flooding, and Geotechnical Services
Project: Inundation Mapping, Hazard Assessments and Emergency Action Plans for Forest Service Dams
Bridging grace and imagination with functionality while delivering pragmatic solutions.
Project: Jacobs School of Medicine & Biomedical Sciences

Trusted Design and Engineering Solutions for Federal Projects
Service detail: Architecture
Multi-Discipline Engineers and Consultants
Service detail: Design Services

Building up vision, leading future
Project: Pinel 2
Innovative Solutions, Proven Technology, Quality Engineering.
Project: Bordell Road Bridge

Benchmark Civil Engineering Services provides civil engineering, traffic and transportation, land development, land surveying, municipal review, and expert witness services in the Lehigh Valley and Eastern Pennsylvania region. Founded in 1994 and headquartered in Allentown, Pennsylvania, Benchmark serves commercial builders, municipalities, and landowners across Pennsylvania, New York, New Jersey, and the Philadelphia area. The firm employs state-of-the-art robotics and electronic surveying equipment alongside current CAD software to deliver engineering and surveying solutions.
Service detail: Traffic & Transportation