In a close vote, members of the Board of Representatives this week defeated a resolution to schedule a public hearing that would advance a project to widen Washington Boulevard just south of the train station. Representatives have hesitated to approve the project because it would involve claims of eminent domain, a government right to take private property for public use. Since the project came before the board six months ago, opponents have said they want to ensure that property owners get a fair deal. But now opponents say it would be wrong to schedule a public hearing when citizens are unable to gather because of state orders issued to curb the spread of coronavirus. It’s an important project in a series designed to improve traffic flow to Waterside and the South End, and around the train station, Stamford’s critical transportation hub, Mayor David Martin said. Much of the cost will be covered by state and federal funding and by private developers working nearby.