The opening ceremony is scheduled for Friday.

“In light of trade action threatened by the United States earlier this week, it would be inappropriate to proceed with a celebratory event.”

The opening ceremony is scheduled for Friday.

Canada cancels joint bridge-opening event with the U.S. after Trump announces 50% tariffs on Canadian goods, escalating trade tensions.

Document spells out Canada's 50 per cent payment, U.S. veto over toll changes, and the requirement for an opening ceremony.

"It would be inappropriate to proceed with a celebratory event between the two countries," said a spokesperson for Canadian Infrastructure Minister Gregor Robertson.

Missing from the document released on Tuesday is any reference to Canada recouping debt-servicing costs, an issue of conflicting comments.