By using a relatively new technology, mobile Light Detection and Ranging (LiDAR) and imagery, MnDOT obtained accurate roadway data in a safe and efficient manner. Using a manual extraction technique, MnDOT created a Geographic Information System (GIS) inventory of geospatial coordinate locations, asset attributes, and condition data for plate beam guardrails and concrete barriers. The LiDAR data was utilized for internal communication and visual rendering and will be used in the future to assist with roadway design. The project challenges were mostly technical in nature and highlight the importance of having a clear quality assurance/quality control process. The benefits of the project include, but are not limited to: calculating barrier replacement costs, scoping and budgeting future projects based on condition and future fed/state standard changes, allowing for better planning of maintenance activities, utilizing the imagery to extract other assets, and construction cost savings due to increased design accuracy.
