To monitor structural behavior of large-scale civil infrastructures such as long-span bridges, it requires direct and accurate measurement of "macroscopic" strains which are more representative of the deformation of entire structural element. On the other hand, quasi-distributed measurements are also supposed to serve the purpose to catch the characters of whole structure. In this regard, a novel packaging method for practical adaptation of long-gage FBG strain sensor in civil structures is proposed. After a series of tests including uniaxial tension and compression, bending, free-vibration and shaking table tests, the ability of the packaged FBG sensors fixed on different specimen for macro-strain measurements has been characterized by comparing with conventional foil strain gauges in both static and dynamic cases. Combined with the parametric identification method based on macro-stains, the applicability of quasi-distributed long-gage FBG sensors in structural parameter estimation and damage detection is discussed.