sentences:  On January 18, 2008, the Federal Highway Administration authorized the states of Mississippi and Tennessee to extend I-69 from the I-40/TN 300 interchange in north Memphis to the I-55/I-69 interchange in Hernando, Mississippi; Tennessee has signed the extension of the route, although Mississippi has.I-69 in Tennessee has been divided into three of segments of independent utility (SIUs).Tennessee considered legislation that would allow I-69 to be built as a toll road, thereby accelerating its design and construction timetable by several years should such legislation be approved.