Daliri, S., Young, B.K., and Lædre, O. (2021). “Last Planner® System on The Minnevika Bridge Project.” Proc. 29 th Annual Conference of the International Group for Lean Construction (IGLC29), Alarcon, L.F. and González, V.A. (eds.), Lima, Peru, pp. 757–766, doi.org/10.24928/2021/0167, online at iglc.net. Production Planning and Control 757 LAST PLANNER® SYSTEM ON THE MINNEVIKA BRIDGE PROJECT Sajad Daliri 1 , Brendan K. Young 2 , and Ola Lædre 3 ABSTRACT Construction companies around the world have adopted the Last Planner® System (LPS) to reduce variability, increase workflow and improve reliability on their projects. This study explains the implementation of LPS in an infrastructure (railway bridge construction) project. Strengths and weaknesses of the implementation were examined and possible measures to overcome the experienced challenges were discussed. Finally, attitude changes towards the LPS during the project were measured. Data was collected through case-specific observations, semi-structured interviews with open-ended questions, and two surveys. The findings revealed that the project benefitted from implementing LPS, but benefits could have been reinforced if critical team members had participated continuously in the necessary meetings, followed the system without resistance and maintained their commitments. Additionally, LPS on the Minnevika bridge project was the novel start and detected challenges are often experienced by every organization at the beginning of implementation of a new system. Indeed, the Minnevika bridge project can be considered as a point of departure and being persistent will help the parties to benefit even more in the next project. KEYWORDS Last Planner® System, challenges, infrastructure, attitude. INTRODUCTION Since the construction industry plays a vital role in economy, society, environment (Ansah et al. 2016), reducing waste and increasing productivity is important. The existing failures reported in the traditional project management help define the requirements for a new approach. This approach has been adapted to the construction industry, namely lean construction (Pellicer et al. 2015). The Last Planner® System is one of the most popular lean tools which has been used in construction to improve management and control, reduce urgent procurement requests, improve the performance(Alarcón et al. 2011), and for continuous monitoring of planning efficiency (O. AlSehaimi et al. 2014). Several of the largest construction companies in Norway have shown their interest in LPS or what they call “Collaborative Planning (Veidekke and Kruse Smith), Trimmed Construction (Skanska) and Collaborative Project Execution (Nymo)” in their operations 1 MSc Candidate, Norwegian University of Science and Technology (NTNU), Trondheim, Norway/PNC Norge AS, Oslo, Norway, +4796859654, sajadd@stud.ntnu.no, orcid.org/0000-0002-3355-8807 2 Managing Site Manager, PNC Norge AS, Oslo Norway, +4747713728, brendan.young@pnc-norge.no, orcid.org/0000-0003-2532-8670 3 Associate Professor, Norwegian University of Science and Technology (NTNU), Trondheim, Norway, +4773594739, ola.ladre@ntnu.no, orcid.org/0000-0003-4604-8299