SIU 8 proceeds south from Dyersburg, paralleling US Highway 51 to a planned interchange with TN-385 (I-269) in Millington. To facilitate work on the Draft EIS this segment, the Tennessee Department of Transportation has divided SIU 8 into three smaller segments. In April 2006 TDOT has announced the preferred routing for the northern and southern subsections, favoring an alignment to the west of Highway 51. Meanwhile, studies are still ongoing for the central section, which include alignments both east and west of the existing US Highway 51. Once TDOT identifies the preferred alignment for the central segment, it is expected that a supplemental draft EIS will be necessary before the final EIS can be prepared.