  We present some results of an ongoing project devoted to reassess the radial
abundance gradients in the disc of the MilkyWay based on deep spectroscopy of
Hii regions. The data have been taken with large aperture telescopes, mainly
with the GTC and VLT. The sample contains about 35 objects located at
Galactocentric distances from 5 to 17 kpc. We determine the electron
temperature for all nebulae, allowing the precise calculation of chemical
abundances. In this paper, we present and discuss results mostly concerning the
radial gradients of O, N and C.
