The National Highway System Designation Act of 1995 added a branch from Toledo, Ohio, to Sault Ste. Marie, Michigan, via the US 223 and US 127 corridors. (At the time, US 127 north of Lansing was part of US 27.) It also gave details for the alignments in West Virginia, Virginia, North Carolina and South Carolina. I-73 and I-74 were to split near Bluefield, West Virginia, joining again between Randleman and Rockingham, North Carolina; both would end at Charleston. The American Association of State Highway and Transportation Officials (AASHTO) approved the sections of I-73 and I-74 south of I-81 in Virginia (with I-74 ending at I-73 near Myrtle Beach) on July 25, 1996, allowing for them to be marked once built to Interstate standards and connected to other Interstate highways. The final major change came with the Transportation Equity Act for the 21st Century of 1998 (TEA-21), when both routes were truncated to Georgetown, South Carolina.