characterize fifteen species for the database system of the gene bank study; improve NVSU and Municipal Agriculture Office (MAGRO) citrus nurseries producing 10,000 and 2,000 budded seedlings, respectively; establish new 1-hectare orchard with planting materials from NVSU; and generate data on the description of local citrus pests and diseases. Infrastructure Roads and Bridges Pigalo Bridge - The Pigalo Bridge traverses over the Cagayan River in Angadanan, Isabela. This bridge also connects the two municipalities of Angadanan, Northeast Isabela and San Guillermo, Isabela at Southwest. The proposed construction of the Pigolo Bridge approaches the span of about 450 lin. meters across the Cagayan River, the project started on April 10, 2017, and was completed on April 29, 2019. Buntun Bridge - Buntun Bridge took three administrations to finish the construction from 1960 to 1969 connecting the municipality of Solana and Tuguegarao City. considered to be one of the longest bridge in the country crossing the longest river in the country called Cagayan River also known as the Rio Grande de Cagayan. The bridge was stretched to 1,369 m (meters) in length. Image gallery See also List of Cultural Properties of the Philippines in Cagayan Valley References External links Regions of the Philippines Luzon Valleys of the Philippines