Overview of Innovation
Three-dimensional (3D) models are a basic building block for the modern-day digital highway project. Under EDC-2, significant emphasis was laid on the use of 3D engineered models to more effectively connect design to construction. Various current good practices and challenges pertinent to modeling, data, data transfer, data control, and data use that form a part of design-construction workflow were a subject of EDC-2 webinars, workshops, technical support sessions and technical resource documents. With a growing reception to 3D technology, the transfer and use of 3D model data in construction has been successfully demonstrated and used in numerous states nationwide. The technology proves to be a cost-effective method for accelerating highway construction.
Recognizing that 3D models and the raw, digital geospatial data that supports them have a utility upstream and downstream of design and construction phases in a project’s lifecycle, this EDC-3 initiative, while maintaining its current focus, seeks to further advance the application areas of 3D models and the supporting data. The specific emphasis areas of the initiative are to promote (1) the use of the raw data from which the model is created (e.g., LiDAR based data) for roadway inventory and asset management purposes, (2) the incorporation of schedule (4D) and cost (5D) information into model, and (3) the use of post-construction survey data to correct the design model to create an accurate as-built record drawing (including subsurface utilities).
Implementation Plan: Working Draft