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Techbrief: Digital As-Builting as an Integral Part of Digital Delivery — An Iowa Dot Case Study
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2024-07-01
[PDF-719.58 KB]
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Abstract:Data is a crucial asset for the Iowa Department of Transportation (Iowa DOT), and the agency recognizes the need for a comprehensive data management strategy to facilitate a seamless exchange of information through digital as-builts (DABs) as it transitions to digital workflows. The agency’s current process for creating DABs involves redlining PDFs and storing project information, and manually entering some data fields into the geographic information system (GIS). The current process is fragmented and challenged by incomplete or inaccurate georeferencing and a lack of detailed element-level asset information. Consequently, there is a disconnect in information exchange between the construction and operations phases. Guided by its Strategic Plan for Digital Delivery (SPDD), Iowa DOT has been making steady progress to improve the accessibility of highway project data throughout the entire project lifecycle. By adopting an incremental approach, Iowa DOT is gradually transitioning away from electronic, non-digital workflows toward a more advanced digital workflow (digital delivery). The agency’s overarching goal is to establish a unified source of truth that will provide every user with the information they need to make informed decisions related to each lifecycle phase of a facility or asset. The agency envisions a future state where seamless data handoffs are the norm, incorporating geospatial information and harnessing the potential of available technologies. To achieve this vision, the agency has strategically employed a fourfold approach: (1) using three-dimensional (3D) models to develop project models that can serve as legal documents; (2) expanding data collection to enrich the digital models; (3) leveraging various existing and new technologies, including Masterworks and e-Ticketing, to support specific business functions; and (4) developing and implementing data management processes to streamline data flow and ensure effective communication among various systems. Iowa DOT spearheaded this initiative with the implementation of DABs on two pilot projects: the I-80/I-380 Interchange Reconstruction Project and the US 30 Roadway Project in Benton County. This Technical Brief discusses Iowa DOT’s overall implementation approach, the piloting of model as a legal document on two pilot projects, Iowa DOT’s experience with deploying tools and technologies in conjunction with business process changes to create DABs, and the agency’s future plans.
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