Now the long wait begins for the next I-69 Corridor project in Tennessee ...
Seems strange that TN breaks it's neck to get going on building I-269 but can't be bothered with any of I-69 between Memphis and the KY border. I know there's that funding thing, but....oh well
A lot of it was planned to be built as TN 385 long before I-269 came to fruition. I would even go out on a limb and say that most of the funding to complete TN 385 was already in place as well.
As Cody says, TN 385's components has been on the books for decades... at least since the early 70s in various forms, along with all sorts of projects that never came to fruition (like the Loosahatchie Parkway) or only came about in modified form (Walnut Grove and Kirby through Shelby Farms); the Bill Morris Parkway, for example was originally planned to replace Winchester from Germantown Road to Poplar Avenue at Houston Levee, with Winchester being rebuilt as Texas-style frontage roads. I'm not sure how the current alignment came about exactly, but that's when Nonconnah (Bill Morris), Millington-Arlington (Paul Barrett), and Collierville-Arlington (which now also has an honorary name, which I forget) became parts of 385.
By comparison a Memphis-Millington expressway was never really seriously planned. Development never really went in that direction, even though infrastructure was put in place for it (routes like North Watkins/TN 388, Singleton Parkway/TN 204, New Brownsville Road, and New Allen Road), and the west TN politicos who had power to divert resources to one (like longtime Lt. Gov Wilder and the House speaker whose name I forget, who both represented NW TN) were more interested in better routes from their region to Nashville than getting from Union City and Dyersburg to Memphis, hence the ridiculously overbuilt TN 22 freeway, US 412 from Jackson to Dyersburg, etc. The parts of US 51 freeway north of Dyersburg also fit in this mold.
And now those politicians are gone, and the ones that replaced them aren't particularly interested in diverting resources to an area they think got disproportionate attention from the 60s through 80s, hence the lack of I-69 progress. I think it'll happen eventually as Covington becomes more of a Memphis suburb, or if Millington ever attracts some real industry, but it'll be a while before the political pressure is there again.