Barto pleaded guilty Monday to two counts of murder and three counts of intoxicated assault with a vehicle. He did not have a plea agreement.
Barton acknowledged driving drunk during the April 4 accident in which his vehicle smashed into one carrying 33-year-old Kandace Hull and her 13-year-old daughter, Autumn Caudle of Argyle. Mother and daughter were killed.
Barton has three other DWI convictions since 1997.