[2][1] [3] Overlooking Mount Arayat to the east and the Zambales Mountains to the west, the viaduct is raised over Candaba Swamp and Pampanga River by 20 feet (6.1 m), about the same as the current elevation of Bacolor, also in Pampanga, after lahars that resulted from the 1991 eruption of Mount Pinatubo affected the municipality from 1991 to 1995, which keeps the highway open to traffic, even when the swamp gets flooded during the rainy or monsoon season.

The viaduct starts at Barangay Dulong Malabon in Pulilan where there are a few houses located under it and after a few meters, it enters the municipality of Calumpit.

1113, President Ferdinand Marcos granted CDCP the franchise to maintain and operate the expressway, including the Candaba Viaduct.

[10] In February 2017, it was announced that the Candaba Viaduct would be expanded and would have a third lane on both sides of the bridge.

Jose Luigi L. Bautista signed a ₱10 billion loan agreement with the Bank of the Philippine Islands (BPI) for funding to ensure its completion in November 2024.

[16] The NLEX Corporation on February 26, 2024, said that the successful first girder installation marked the transition from heavy groundwork construction to road-level work.

[18] Hereafter, President Bongbong Marcos, with Manny Pangilinan and Speaker Martin Romualdez led the inauguration and opening of the Third Candaba Viaduct at BigBen Farm, North Polo Club' Barn Events, Barangay Tabon, Pulilan.