From its eastern terminus at an interchange with South Luzon Expressway's Alabang Exit, East Service Road, Manila South Road, and Montillano Street, the road runs westwards for approximately 10.9 kilometers (6.8 mi) to the junction with Diego Cera Avenue. Since 1997, it has also extended further west for several hundred meters, connecting Las Piñas to its present terminus at Coastal Road (R-1) in Bacoor, Cavite.[1]
The road begins at the junction of Manila South Road (National Highway), Montillano Street, East Service Road, and South Luzon Expressway's Alabang Exit in Alabang, Muntinlupa, below the Alabang Viaduct and Skyway Extension. A spur carrying southbound traffic also branches the highway to the front of Starmall Alabang at Manila South Road. It then crosses into Filinvest City, Barangay Cupang, and Barangay Ayala Alabang. In Filinvest City, the road is interrupted due to realignment brought out by its development. The gap is filled by a segment of Bridgeway Avenue between West Service Road and Spectrum Midway before resuming as short frontage roads parallel to Skyway's South Station Exit.
West of Investment Drive (the northern extension of Daang Hari Road) at Madrigal Business Park, it enters Las Piñas and goes past the commercial and residential areas of the city. It then crosses the Zapote River and enters the province of Cavite at Bacoor, where the road ends at the Bacoor Interchange of Coastal Road (CAVITEX). Electric power sub-transmission lines by Meralco, placed on tall roadside posts, also shared by distribution lines, line almost the whole length of the road from Zapote in Las Piñas to Alabang in Muntinlupa and the proposed Las Piñas–Muntinlupa Expressway, which is worth ₱2.75 billion.
The road was extended to the northwest towards Coastal Road in Bacoor in 1997 with the construction of the four-lane Alabang-Zapote Centennial Flyover (now Zapote Flyover) to ease the increasing traffic volume along the road.[1] Its section in Alabang, Muntinlupa, particularly between Filinvest and Bridgeway Avenues, was also realigned between 2006 and 2012 with the development of Filinvest Corporate City.
Intersections
Intersections in the list below are arranged by kilometer number, based on numbers on kilometer stones from Rizal Park in Manila, the Kilometer Zero.