The Future I-57 project in Butler County will include upgrading U.S. Route 67 to interstate standards from the Route 160/158 interchange south of Poplar Bluff, Missouri to the MO/AR State line. This will primarily be accomplished by constructing four new lanes west of the existing U.S. 67 pavement and converting the existing pavement into an east outer road.

The entire project limits are broken down into five phases: Phases 1A and 1B, as well as Phases 2-4.

Phase 1A has been completed.

Phases 1B and 2 are under construction and include upgrading U.S. 67 to four lanes from near the Route 160/158 interchange to County Road 352.

Phase 3 includes upgrading U.S. 67 to four lanes from County Road 352 to near County Road 272. Within this nearly five-mile section, an interchange at Neelyville, an overpass at County Road 350/Route MM, and an underpass at County Road 270 connecting to existing U.S. 67 will be constructed.

Phase 4 includes upgrading the remaining three-mile section of U.S. 67 north of the Arkansas State line to four lanes and constructing an interchange at State Line Road. Phase 4 will be funded by general revenue provided by the state legislature and Governors Parson and Kehoe.

In order to upgrade U.S. 67 to interstate standards, at-grade crossings along this section of the corridor must be permanently closed.