Adoption of One-Step Bidding Process for DPWH Infrastructure Projects. Category: Department OrderSub Category: contracts-contractorsSeries: 1990No: 245File: DO_245_S1990.pdfDate: Thursday, November 15, 1990Tags: DO No 245 S. 1990 Adoption One-Step Bidding Process contractor 245 Read more about Adoption of One-Step Bidding Process for DPWH Infrastructure Projects.