R-3 Radial Road 3
R-3 Road
A portion of Radial Road 3, looking south towards the Nichols Toll Plaza from Sales Interchange
Route information
Maintained by the Department of Public Works and Highways,[a] the Metropolitan Manila Development Authority,[b] Skyway Operations and Maintenance Corporation,[c] Manila Toll Expressway Syatems, Inc.,[d] and STAR Infrastructure Development Corporation[e]
Length	96.32 km (59.85 mi)
Component highways	N145 in Manila and Makati E2 from Makati to Batangas City AH 26 (E2) from Makati to Calamba
Major junctions
North end	N140 (Quirino Avenue) in Manila
South end	N4 (Jose P. Laurel Highway) / N434 (Batangas Port Diversion Road) in Batangas City
Location
Country	Philippines
Regions	Calabarzon and Metro Manila
Provinces	Batangas, Cavite and Laguna
Major cities	Batangas City, Biñan, Cabuyao, Calamba, Lipa, Makati, Manila, Muntinlupa, Parañaque, Pasay, San Pedro, Santa Rosa, Santo Tomas, Taguig, and Tanauan
Towns	Carmona, Ibaan, Malvar, and San Jose
Highway system
Roads in the Philippines Highways Expressways List

Radial Road 3 (R-3), informally known as the R-3 Road, is a network of roads and bridges that all together form the third arterial road of Metro Manila in the Philippines.^[1] Spanning some 96.32 kilometers (59.85 mi), it connects the cities and municipalities of Batangas, Biñan, Cabuyao, Calamba, Ibaan, Lipa, Makati, Malvar, Muntinlupa, Parañaque, Pasay, San Jose, San Pedro, Santa Rosa, Santo Tomas, Taguig, and Tanauan in Batangas, Laguna, and Metro Manila.

Route description

Osmeña Highway

Between its northern terminus at the intersection with Quirino Avenue in Paco district and Sales Interchange at the boundary of Pasay and Taguig, R-3 is known as Osmeña Highway. It used to be known as South Superhighway which is the toll-free component of South Luzon Expressway in Metro Manila, named after Commonwealth president Sergio Osmeña. It links Paco and San Andres south to Magallanes Interchange in Makati. The name also refers to the expressway segment south of Magallanes Interchange up to Kilometer 28.387 in San Pedro, Laguna.^[2][3]

South Luzon Expressway

The main segment of R-3 is the South Luzon Expressway (SLEX) which runs underneath Skyway up to Muntinlupa in Metro Manila and forms a component of the Pan-Philippine Highway (AH26). With the expressway section starting at Magallanes Interchange and its restrictions starting at Sales Interchange, it traverses the Metro Manila cities of Makati, Taguig, Pasay, Parañaque, and Muntinlupa and the Laguna cities of San Pedro, Biñan, the Cavite municipality of Carmona, and the Laguna cities of Santa Rosa, Cabuyao, and Calamba before arriving at the Southern Tagalog Arterial Road in the city of Santo Tomas in Batangas.

Southern Tagalog Arterial Road

R-3 is known as the Southern Tagalog Arterial Road (STAR Tollway) in the province of Batangas, which connects the South Luzon Expressway with the Port of Batangas in Batangas City.