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3D Engineered Models

About 3D Engineered Models

Every Day Counts

Three-dimensional Engineered Models for construction (or just 3D models) are among a few select technologies being promoted by the FHWA Every Day Counts program. Our focus is on helping owner-agencies, designers, and construction contractors with little or no experience in 3D engineered models get started in implementing this technology. Read more about 3D Engineered Models

Case Studies


4D Modeling: A State Transportation Agency's Approach to Risk Management (.pdf, 1 mb) This case study highlights how the Connecticut Department of Transportation (CTDOT) has successfully used a 4D modeling method for managing risk on the I-95 New Haven Harbor Crossing Corridor Improvement Program.

More Case Studies

How-to Guidance


Guide for 3D Engineered Models for Bridges and Structures  New (.pdf, 1.5 mb) With so many bridges across the country needing rehabilitation or replacement, creating significant impacts to motorists who use them daily, visualization and construction simulation (also known as 4D or 5D modeling) helps transportation agencies engage with the public and plan work activities in narrow rights-of-way.

More Guidance Documents

  • Web Based Training

    This web-based training (WBT) on 3D Engineered Models for Construction is made up of four 120-minute modules focused on critical topics that support new users' implementing 3D models. Module 1 is an introduction to 3D engineered models and serves as an overview to the topics presented in Modules 2, 3 and 4. Module 2 covers surveying and 3D engineered models, Module 3 looks at 3D models in highway design, and Module 4 covers applications of 3D models in highway construction and quality assurance. While all of the modules explore a new topic within 3D modeling, they are also designed with enough recurring content to serve as individual learning experiences. The training is accessible at 3D Engineered Models for Construction.

  • Workshops

    Selected State transportation agencies are hosting a 3D workshop highlighting: State of the practice - procedures and technology; Practical demonstrations highlighting beneficial uses of the technology; Construction quality assurance methods; Implementation strategies for success; Answers to attendees' questions on issues and implementation

  • Webinar Series

    In EDC-2 and EDC-3, the FHWA created two webinar series to increase overall awareness and general education of transportation professionals in uses of 3D engineered models in all phases of project delivery that include the areas of planning, data collection and management, design, construction, operations and maintenance of highway facilities. EDC-2 emphasized 3D engineered models for design and construction, while EDC-3 promoted the broader use of 3D models and digital data to further advance other application areas.

    View EDC-2 webinar series recordings | View EDC-3 webinar series recordings

photo credits: Surveying - Trimble; Design - HNTB; Construction - Autodesk; Post-Construction - Industrial Housing Solutions; Training - Trimble; Resources - Michigan DOT;
PDF files can be viewed with the Acrobat® Reader®
Updated: 06/27/2017
Federal Highway Administration | 1200 New Jersey Avenue, SE | Washington, DC 20590 | 202-366-4000