north to Hopkinsville, Kentucky on US 31 and modern day US 41A. An auxiliary route numbered US 143 was also to be commissioned to replace US 31E to Glasgow, Kentucky. This plan received pushback from the Tennessee and Kentucky Departments of Transportation and the plan was scrapped. Future Preliminary talks have indicated that Alabama state officials support a plan to upgrade US 43 to Interstate Highway standards from the Mobile metropolitan area to the I-20/I-59 interchange in Knoxville, Alabama (southwest of Tuscaloosa). No number has been assigned. The plan is estimated to cost roughly $1.6 billion. The project is expected to help the economies of cities in the Black Belt by connecting communities in western Alabama, the Port of Mobile, I-65, and I-20/I-59. Major intersections See also U.S. Route 143 Notes References External links U.S. Highway 43 (AL) on AARoads.com U.S. Highway 43 endpoints on USEnds.com U.S. Highway 43 on the Lost Highway – Shows pictures of old segments of US 43 Interstate 63/Western Alabama North-South Freeway on Interstate-Guide.com 43 43 Transportation in Mobile County, Alabama Transportation in Washington County, Alabama Transportation in Clarke County, Alabama Transportation in Marengo County, Alabama Transportation in Greene County, Alabama Transportation in Tuscaloosa County, Alabama Transportation in Fayette County, Alabama Transportation in Marion County, Alabama Transportation in Franklin County, Alabama Transportation in Colbert County, Alabama Transportation in Lauderdale County, Alabama Transportation in Lawrence County, Tennessee Transportation in Maury County, Tennessee Mobile metropolitan area Demopolis, Alabama Transportation in Tuscaloosa, Alabama Florence–Muscle Shoals metropolitan area 43 43