The studies on new pavements were taken up on Tumkur Bypass of NH 4 as part of the work of R-6 Research Scheme of the Ministry of Shipping and Transport, Roads Wing. Six different Test Sections were constructed, adopting different combinations of commonly used pavement materials. The new pavements were tested layer by layer soon after the construction using Plate Load Tests and Benkelman Beam rebound deflection studies. The structural evaluation of the test sections and the component layers has been made from the analysis of data collected. The surface condition of the pavements has also been evaluated. The Benkelman Beam deflection studies are found to be a very useful and reliable method for conducting quality control checks on new pavement layers. The deflection data on the prepared subgrade may also be made use of to check the overall thickness requirement of the pavement. Several regression equations have been worked out between the deflection and E-values determined by Plate Load Test and Benkelman Beam deflection methods on new pavement layers, with a good degree of correlation. Based on the deflection studies during the first 30 months of traffic loads over the new test sections, the periods required for attaining highest structural stability of the new pavements have been found. A method of estimating the rate of deterioration in structural stability of new pavements has been suggested, based on the deflection studies during the first few years after the pavement construction.