Circumferential Road 5 (C-5), informally known as the C-5 Road, is a network of roads and bridges that all together form the fifth beltway of Metro Manila in the Philippines. Spanning some 43.87 kilometers (27.26 mi), it connects the cities of Las Piñas, Parañaque, Pasay, Pasig, Quezon City, Taguig, and Valenzuela.

The Harbor Link Interchange, also known as the Mindanao Interchange and North Luzon Expressway Harbor Link Interchange and formerly known as the Smart Connect Interchange, is a two-level cloverleaf interchange in Valenzuela, Metro Manila, the Philippines which serves as the junction of North Luzon Expressway (NLEX) between its main segment and its Harbor Link project, particularly Segments 8.1 and 9, components of Circumferential Road 5 (C-5). Built as part of the 2.7-kilometer (1.7 mi) NLEX Segment 8.1 of the Harbor Link project extending the expressway to Mindanao Avenue, which has since been incorporated into the C-5 system, it is the Philippines' largest cloverleaf interchange in terms of land area.