San Juanico Bridge is a part of the Pan-Philippine Highway and stretches from Samar to Leyte across the San Juanico in the Philippines. Its longest length is a steel girder viaduct built on reinforced concrete piers, and its main span is of an arch-shaped truss design. Constructed during the Marcos administration using Japanese Official Development Assistance (ODA) loans, it has a total length of 2.16 kilometers (1.34 mi) – the longest bridge spanning a body of seawater in the Philippines.

San Juanico Bridge connects the islands of Leyte and Samar by linking the city of Tacloban to the town of Santa Rita, Samar. It passes over the San Juanico Strait. The road infrastructure is the longest bridge in the Philippines spanning across a body of water measuring 2,164 m (7,100 ft) in total length. It has 43 steels spans with the primary span measuring 192 m (630 ft).