WINDSOR, Ontario - Authorities will convene on Friday in Ontario to mark the completion of a fresh U.S.-Canada crossing over the Detroit River. This international structure promises to boost commerce across the border and offer an additional pathway for travelers between the nations.

A formal event is set for Windsor, Ontario, ahead of the Gordie Howe International Bridge opening to vehicles on Monday. Plans for a joint celebration on the bridge itself were canceled by Canada following President Donald Trump's recent decision to impose 50% tariffs on Canadian imports to the U.S.

"It is unfortunate that trade ties have reached this stage. We look forward to improved relations in the future," Windsor Mayor Drew Dilkens told WXYZ-TV in Detroit.

Over 70% of Canada's exports head to the U.S., its top trading partner, with Detroit serving as the busiest truck crossing point on the border, per U.S. Department of Transportation data.

The Howe bridge will introduce immediate rivalry. For almost 100 years, the privately held Ambassador Bridge stood as the sole option for large commercial trucks traveling between the U.S. and Canada at Detroit.

Detroit Mayor Mary Sheffield had received an invitation to a binational gathering Friday prior to the sudden shift in plans.

"This link will prove essential to our economic health," Sheffield noted, avoiding direct comment on whether the project had turned into a point of political friction amid strained bilateral ties.

The bridge honors Howe, the renowned Canadian hockey player who suited up for the NHL's Detroit Red Wings before passing in 2016. Work started in 2018 and extended over several years due in part to pandemic-related delays worldwide.

The six-lane span stretches 1.5 miles (2.4 kilometers) and rises 151 feet (46 meters) above the Detroit River at its peak. Walkers and cyclists with valid identification can cross without charge starting in a few weeks.

Canada funded the entire project at a cost of roughly $6.4 billion. Under a recent pact, Canada will split some toll income with the U.S. government for 15 years. Michigan will receive a portion only after Canada recoups its expenses, which may take decades.