The Italian experience in the field of `stand alone' monitoring systems for viaducts shows that the design of said systems, as well as that of the single components utilized, must satisfy complex and often unusual operating conditions and, at times, yield to compromises of various types. This is necessitated by the fact that the electronic devices used are expensive and the characteristics of high resistance to the elements and long term reliability they must satisfy. Therefore, it is often preferable to limit the system performance envelope in the interest of ease of maintenance characteristics, intrinsic safety, simplicity of installation, resistance to the most aggressive atmospheric agents, imperviousness to outside disturbances, etc. One of the most onerous aspects the design engineers must take into account comprises the interaction, between those work site activities specifically connected with the installation of the monitoring system and those that merely relate to the construction of the structure. The difference in tradition in terms of the scope of monitoring strategies between the designer of measuring and telecontrol systems and the design engineers of the structure in question must not be forgotten.