A new US$4.7 billion bridge connecting Detroit, Michigan and Windsor, Ontario is on track to open in the coming weeks despite a threat made in February by US President Donald Trump, a bridge authority said on Monday.A formal ribbon cutting is expected later this week, a source told Reuters. Detroit media outlets reported on Monday the Gordie Howe International Bridge is expected to open to traffic on June 15.The ribbon-cutting invitations went out on Monday after a...