EpsilonRebars were installed in two lines along the entire length of the highway section, as well as at selected critical locations (including transvers direction). Two diameters of the sensors were applied in this project, corresponding to the design assumptions. Sensors had a double function in the structure: sensing and reinforcing at the same time. Measurements performed during long term monitoring allowed for detection of all the cracks formed during hardening of early age concrete – see example in the figure below..