The achieved benefits of Open Infrastructure BIM in Finland have been studied. The newest concept of Open InfraBIM in Finland is introduced. Industrial experiences and observed remarkable benefits in three large-size infrastructure design and construction projects carried out in 2012-2022 are presented and evaluated. Based on the observations and achieved results, the implementation of the Finnish Open InfraBIM concept has been successful in Finland. Clear benefits were observed and measured in three considered major design and construction projects. Most benefits were found from the latest project Kirri-Tikkakoski with remarkable cost and time savings. The benefits of BIM based machine control and real-time quality control were emphasized. This project has also used the most advanced and widest InfraBIM concept with early integration with all relevant stakeholders. Further development, information sharing and wider utilization of the Open InfraBIM in Finland and globally are suggested.