The Large Synoptic Survey Telescope (LSST) is the most ambitious ground-based survey currently planned in the visible band. Mapping of the Milky Way is one of the four main science and design drivers. The main 20,000 sq.deg. large survey area will be imaged about 1000 times in six bands (ugrizy) during the anticipated 10 years of operations, with the first light expected in 2015. These data will result in databases including 10 billion galaxies and a similar number of stars, and will serve the majority of science programs. In the Milky Way context, these deep LSST data will enable unprecedented studies of distant stars in Galactic halo, as well as intrinsically faint nearby objects, such as white dwarfs and LTY dwarfs.