 Past the toll plaza and the exit to SLEX, the Skyway narrows into one lane per direction, and curves westward before joining Alabang–Zapote Road near South Station in Alabang.Stage 3, presently under construction, is divided into five sections.Section 1 begins at the Buendia Exit and runs northwards along Osmeña Highway, veers right to Quirino Avenue (C-2) and ends at Tomas Claudio Street.