sentences:  Many previously constructed BERTS pillars stood in the way of the new system.After extensive debate and an engineering review on their suitability for use in the ARL project—and demands for compensation from Hopewell—the SRT eventually decided to demolish the pillars and build new ones.Originally scheduled to be completed by 2007, the Hopewell debacle, an extended bidding process, and a series of legal challenges from squatters and property owners who had encroached on SRT's land, repeatedly delayed the project.