 Stage 1 involved the rehabilitation of the at-grade portion of SLEX from Magallanes to Alabang and the construction of a 6-lane, elevated expressway above it, from Buendia to Bicutan.Stage 1 started on April 7, 1995 and partially opened to motorists in October 1999.Buendia, Makati (now Amorsolo), Magallanes, Skyway Toll Plazas A and B, and Bicutan Exits were first to be completed in December 1997.