Highway, Traffic & Rail Services

We have deep roots in highway, traffic and rail system planning and design. Our founder, John Clarkeson, advanced the idea that if our highways could be more than functional, they could be beautiful as well. Over the years, CHA has been nationally recognized for our role in designing some of America’s most scenic highways.

Our traffic professionals work with municipalities and departments of transportation to provide a wide range of traffic engineering and transportation planning services. CHA’s award-winning designs incorporate modern intelligent signaling systems capable of monitoring and responding to changing traffic flows in real time. Our certified traffic technicians and engineers work closely with our highway engineering group to provide thorough, high-quality solutions within our clients’ scheduling and budgetary requirements.

With regards to railroads, our engineers and planners have the unique ability to coordinate and expedite all phases of our clients’ projects including applications, approvals, permits, schedules, flagging, and the maintenance and protection of traffic. We focus on finding cost-effective solutions that make the most of scarce construction and rehabilitation dollars.

Our services include:


  • Preliminary & Final Highway Design
  • Highway/Location Studies
  • Alternative Development
  • Environmental Impact Studies & Analyses
  • Community/Public Participation
  • Final Plan Development
  • Constructibility Reviews
  • Pavement Management Programs
  • Toll Facility Planning & Design
  • Forensic Investigations
  • Expert Witness Services
  • Public Involvement Services
  • Construction Inspection


  • Traffic Demand Modeling & Forecasting
  • Traffic Impact Studies
  • Traffic Signal System Design
  • Benefit/Cost Analysis
  • Parking Studies
  • Intelligent Transportation System Development
  • Computer Traffic Flow Modeling
  • Pedestrian & Bicycle Accommodations
  • Sign Inventories & Data Base Applications
  • Forensic Investigations
  • Expert Witness Services
  • Public Involvement Services


  • High Speed Rail System Planning & Design
  • Corridor Planning & Site Feasibility Studies
  • Track Inspection & Design
  • Capital Planning & Programming
  • Passenger Station Planning & Design
  • Intermodal Transportation Facility Design
  • Building Layout & Design
  • Rail Yard & Terminal Design
  • Maintenance Facility Layout & Design
  • Forensic Investigations
  • Expert Witness Services
  • Public Involvement Services
  • Construction Inspection
Highway, Traffic & Rail Services
The web browser you are using to display this page may not fully support the Cascading Style Sheets level 2 web standard. Please consider upgrading your browser to the most current version. Recommended CSS-capable browsers include: Firefox (PC, Mac and Linux), Internet Explorer 6 (PC) and Safari (Mac).