  The origin of Uranus and Neptune is still unknown. In particular, it has been
challenging for planet formation models to form the planets in their current
radial distances within the expected lifetime of the solar nebula. In this
paper, we simulate the in-situ formation of Uranus and Neptune via pebble
accretion and show that both planets can form within ~ 3 Myr at their current
locations, and have final compositions that are consistent with the
heavy-element to H-He ratios predicted by structure models. We find that Uranus
and Neptune could have been formed at their current locations. In several cases
a few earth masses of heavy elements are missing, suggesting that Uranus and/or
Neptune may have accreted $\sim$1 -- 3 M Earth's mass of heavy elements after
their formation via planetesimal accretion and/or giant impacts.
