Develop more repeatable inspection processes.Optimize maintenance and service activities.Operations: Improving operations and maintenance through easier Lower costs to perform as-built surveys.Improve safety and enable right-first-time construction.Conduct calculation of cut/fill quantities as required.Provide up-to-date documents for construction and inspection.Optimize collaboration and coordinationĬonstruction: Monitor and evaluate progress, and enable verification of performance against schedule.Understand financial implications early.Simulate construction and evaluate potential impact.Design: Providing real-world digital context of existing conditions These reality models can be easily and consistently shared, consumed, and accessed, on desktop and mobile devices, in many formats throughout the lifecycle stages – design, construction, and operations – of an infrastructure asset. Photographs and/or point clouds, when additional accuracy is needed, are used to create high-fidelity georeferenced 3D models. Reality modeling is the process of capturing the physical reality of an infrastructure asset, creating a representation of it, and maintaining it through continuous surveys. What is Reality Modeling and what are the Benefits Throughout the Asset Lifecycle? ![]() They performed virtual inspections and established a mixed reality environment for the team and public to view the digital twin of the bridge and gain a better understanding of the restorative design works. Using Bentley’s reality modeling and iTwin applications facilitated real-time model access, saving 20% of field time. By creating a digital twin, the team could record field inspection notes directly in the model, improving accuracy. To identify structural deficiencies and develop repair plans, Collins needed detailed information on the condition of masonry for the entire bridge, including stone arches, embankments, piers, and underwater foundationsĬollins selected ContextCapture, a photogrammetry software, to generate a high-fidelity 3D model as the basis of a digital twin of the Stone Arch Bridge from over 13,000 drone-captured images. to assess and restore the structural integrity of the iconic bridge. To ensure public safety and maintain the cultural value of the bridge, the Minnesota Department of Transportation (MnDOT) hired Collins Engineers, Inc. Although it no longer serves as a railway bridge, the 2,100 feet long bridge is the most historically significant bridge in Minnesota and is recognized as a National Civil Engineering Landmark. In the early 1990s, the Stone Arch Bridge was converted into a pedestrian and bicycle pathway. ![]() Inspecting a Historic Landmark with Reality Modeling This is where reality modeling steps in to help direct the future of transportation planning and construction. The needs of an area constantly evolve as they are built, restructured, and maintained. The daily movement of people and goods is constantly increasing, as is the size and complexity of projects being imagined, and assets operated. ![]() Sharing this brief background on the Stone Arch Bridge helps to illustrate a point: Transportation is essential to sustaining economic growth and improving the quality of life in a region. Thousands of people commuted into and out of the central business district contributing to the fast-growing industrial area. Built in 1883 and spanning the Mississippi River, the 22-span masonry arch bridge served as a working railroad bridge carrying the Minneapolis Union Railroad over the Mississippi River just below St. Hill Stone Arch Bridge carried about 50 passenger trains daily into downtown Minneapolis.
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