Christopher Lee Baxter of Lucedale is charged with capital murder but cannot be sentenced to death under Judge Richard McKenzie's ruling that he is intellectually disabled.
Welford was run over while putting out spikes to stop Baxter's truck and end a police chase. Officials said Baxter was wanted for missing his sentencing on a drug charge.
The Mississippi Press (http://bit.ly/K3y1cu) reports that jury selection is scheduled Monday before McKenzie, and closing arguments are expected Friday.
The State Supreme Court appointed McKenzie, a retired Hattiesburg judge, to hear the case after local judges stepped aside.
Codefendant Brandy Nicole Williams' trial is scheduled Aug. 27 in Lafayette County.