Techbrief: Organizing the Enterprise To Deliver Digital As-Builts Efficiently — Connecticut Dot’s Story
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Techbrief: Organizing the Enterprise To Deliver Digital As-Builts Efficiently — Connecticut Dot’s Story

Filetype[PDF-530.15 KB]


English
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Details:

  • Corporate Creators:
    United States. Department of Transportation. Federal Highway Administration
  • Contributors:
    Gray, James
  • Subject/TRT Terms:
  • Publication/ Report Number:
    FHWA-HIF-24-046
  • Resource Type:
    Brief
  • Right Statement:
    Public Domain
  • Geographical Coverage:
  • Corporate Publisher:
    United States. Department of Transportation. Federal Highway Administration
  • Abstract:
    The Connecticut Department of Transportation (CTDOT) uses digital as-builts (DABs) as a method to generate project- and asset-specific data during the design and construction phases. These data are then exported into an enterprise geographic information system (GIS) for use in the post-construction phase. DABs are pivotal to CTDOT’s goal of maintaining current and authoritative asset inventories for the efficient extraction of valuable information by users. To achieve this, the agency adopts a systematic approach wherein asset-specific data attributes, also known as design asset features, are assigned to the computer-aided design (CAD) feature of a particular asset. These asset-specific attributes are predetermined through a collaborative process involving the stewards of the respective assets. At CTDOT, the transportation asset management (TAM) division is in the Bureau of Engineering and Construction (BEC). The BEC is responsible for capturing data attributes for the asset classes of interest. In the preliminary design phase, CAD and GIS personnel integrate the design asset features into the Building Information Modeling (BIM) models. These data models are passed on to subsequent project lifecycle phases and updated throughout their lifecycle. Construction inspectors validate the accuracy of their representation in the BIM models, while the contractor-supplied data attributes are added to the models. Post-construction, the BIM models are extracted, transformed, and loaded into the enterprise GIS system. The asset stewards assume the responsibility for keeping the models updated and current for their asset classes. Technological infrastructure plays an important role in the DABs process. CTDOT’s process is driven by COMPASS and ATLAS. COMPASS, a SharePoint-based solution to manage project data, track progress, and integrate CAD and BIM models for the project lifecycle. ATLAS is an upgraded Esri-based system that provides authoritative data including route identifications, develops data layers for asset inventories, and scans project-specific data. Integrating ATLAS and COMPASS with other applications facilitates seamless data exchange and enhances efficiency and information extraction.
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