Soil has an important role in construction, roads, buildings, bridges, other dams, therefore it is necessary to have soil with adequate technical properties. The performance of pavement construction is directly affected by subgrade bearing capacity to receive loads. However, not all subgrade layers are able to support the load, therefore the soil needs to be stabilized. Soil stabilization can be done by mixing chemicals materials that can add strength to the soil. This study aims to determine the performance of 4% lime mixed stabilized soil with the Light Weight Deflectometer (LWD) method and determine the value of California Bearing Ratio (CBR) produced from a mixture of soil stabilized with 4% lime. This research uses soil from Kasihan, Bantul. Then the soil is mixed with lime with a concentration of 4% of the total weight of the soil, and through the curing process for 3 days and 7 days. From the results of the test it was concluded that the addition of 4% lime mixture on subgrade could help stabilize soil conditions and increase the CBR value of the soil. CBR values have increased from testing 0.3 and 7 days, namely 5.69% (0 days), 15.51% (3 days), and 17.87% (7 days), and from the results of tests that have been carried out using LWD tool obtained modulus of elasticity on average 67.7649 Mpa (0 days), 69.7022 Mpa (3 days), 70.3 (7 days) at each level.