The federal government has urged a judge to dismiss a lawsuit filed by Tallahassee-based companies that could be prevented from working on federally funded projects after being affiliated with an engineering firm that designed a collapsed Florida International University pedestrian bridge. Nine companies and their owner, Linda Figg, filed the lawsuit in March in U.S. district court to try to block a proposal by the Federal Highway Administration that could keep them off federally funded projects. The companies are affiliated with FIGG Bridge Engineers, Inc., which designed the Miami-Dade Count…