Indiana, to Port Huron, Michigan. A second section exists from near Evansville, Indiana, to Martinsville, Indiana south of Indianapolis. In stages from 2011 to 2018, sections of the Purchase Parkway, I-24, the Wendell H. Ford Western Kentucky Parkway, and the Pennyrile Parkway from Mayfield, Kentucky, to Henderson, Kentucky, became signed as I-69. On October 2, 2006, a segment of I-69 opened in Tunica and DeSoto counties in Mississippi; this segment has since been continued (but is not signed) through Memphis, Tennessee, to an intersection with U.S. Highway 51 on the north side. Between 2012 and 2015, a portion of U.S. Highway 59 (US 59) between Rosenberg and Cleveland, Texas, extending through Houston, became part of I-69. In South Texas, I-69's route splits into three spurs to cities on the U.S.–Mexico border, on which four segments are complete: a short segment of I-69E in Corpus Christi and another from Raymondville to the border in Brownsville; a short segment of I-69C in Edinburg and McAllen; and a very short segment of I-69W adjacent to the border in Laredo. As of 2021, projects to connect these segments are in varying stages of development. Indiana is currently working to connect the Port Huron–Indianapolis and Martinsville–Evansville sections by extending I-69 north from Martinsville to the I-465 Indianapolis loop, with construction planned to be complete in late 2024. Kentucky and Indiana expect to begin construction of the eastern bypass of Henderson and new Ohio River crossing, connecting the Mayfield–Henderson and Martinsville–Evansville sections, in 2022. Kentucky has plans to upgrade the remaining section of the Purchase Parkway and work with Tennessee to reconstruct the current interchange at the south end of the Purchase Parkway in South Fulton, Tennessee to provide a free-flow connection to the existing U.S. 51 freeway to Union City, while Tennessee is currently constructing the I-69 bypass of Union City. A further bypass of Troy is proposed but not yet funded, which would complete a freeway-standard route from I-155 in Dyersburg to Henderson. Tennessee has deferred plans to complete the section between Dyersburg and Memphis to close the gap until the South Fulton–Dyersburg section is completed. The section from Memphis to Houston is the least developed; as of 2021, Mississippi has no current plans to extend I-69 further south, and the states of Louisiana and Arkansas have not funded construction of their portion of the proposed route (via El Dorado and Shreveport) between Mississippi