Recent substantial empirical studies adopt the network approach to understand digital technology enabled management of construction projects. The majority of these studies are based on surveys, and focus on complex inter-organisational relationships (relationships between different disciplines) and knowledge-transfer on mega projects. The approvals are one of the major information-based activities, which is argued in literature as essential to construction project enabled through digital collaboration technologies. But limited research articulates inter-personal information exchanges on a daily basis for approvals enabled in the digital collaboration technology. In a setting of interdisciplinary large infrastructure projects, this research employs network approach to examine the project performance in exchanging information for approvals between owner operator and supply chain in infrastructure projects enabled through digital collaboration technology.