Epifanio de los Santos Avenue (Tagalog: Abenida Epifanio de los Santos), commonly referred to by its acronym EDSA, is a limited-access circumferential highway around Manila, the capital of the Philippines. It is the main thoroughfare in Metro Manila passing through 6 of the capital region's 17 local government units, namely, from north to south, Caloocan, Quezon City, San Juan, Mandaluyong, Makati and Pasay.
Named after academic Epifanio de los Santos, the road links the North Luzon Expressway at the Balintawak Interchange in the north to the South Luzon Expressway at the Magallanes Interchange in the south, as well as the major financial districts of Makati Central Business District, Ortigas Center and Araneta Center. It is the longest and the most congested highway in the metropolis, stretching some 23.8 kilometers (14.8 mi).
The appraisal initiative has set the cost of the project to P16.98 billion, and will cover the railway line’s trains, power-supply system, overhead catenary system, radio system, closed-circuit television system, public address system, signaling system, rail tracks, road-rail vehicles, depot equipment, elevators and escalators, and other station building equipment.