Engineer–computer interaction (ECI) is a new subdomain of human–computer interaction that is specifically tailored to engineers' needs. ECI uses an information classification schema, provides a modular approach to task decomposition, and integrates standard engineering characteristics and working procedures into software. A software tool kit that interprets monitoring data taken from bridges was developed according to ECI guidelines. This tool kit was given to engineers for testing and evaluation. An empirical evaluation using questionnaires was performed. The results show that this ECI software corresponds to engineers' needs and the ECI approach has potential applications to other engineering tasks.