US-to-Canada crossing blocked by truckers protesting Trudeau's Covid curbs

The busiest land crossing from the United States to Canada has remained shut after Canadian truckers blocked lanes on Monday to protest their government's pandemic control measures.

The owner of the bridge, the Detroit International Bridge Co, said on Tuesday that international commerce on the bridge needed to resume.

"We encourage the appropriate officials to take prompt action to alleviate the situation as quickly as possible in a manner that reflects mutual respect," the company's chairman, Matt Moroun, said in a statement.

Drivers demanding an end to federal Covid-19 vaccine mandates for cross-border traffic began blocking the streets of Canada's capital, Ottawa, on January 28.

Since Sunday night, police have started slowly taking back control, seizing thousands of liters of fuel and removing an oil tanker truck.

Trucks started blocking traffic at the Ambassador Bridge, located between Lake Erie and Lake Huron, late on Monday. 

READ MORE: Canada warns US officials against support for truckers' 'siege'

'National humiliation'

Canada's Border Services Agency said on Tuesday that the bridge was closed, but police later tweeted that US-bound lanes were now open. 

Canada's Transport Minister Omar Alghabra said he was closely monitoring the situation. 

Canada sends 75 percent of its goods exports to the United States, and the bridge usually handles around 8,000 trucks a day. 

The president of the Canadian Vehicle Manufacturers' Association called for an immediate end to the blockade, saying "persistent delays at the Ambassador Bridge risk disrupting automotive production that employs tens of thousands of Canadians."

READ MORE: US groups must stop interfering in Canada protests: Ex-US envoy

Canadian Prime Minister Justin Trudeau, appeared in public on Monday for the first time in more than a week after being infected with Covid-19, saying the protest had to stop.

Trudeau was due to return to parliament on Tuesday to face opposition legislators demanding he do more to end what one aide called a "national humiliation."

He has denounced the demonstrators' tactics.

"Individuals are trying to blockade our economy, our democracy, and our fellow citizens' daily lives," he told an emergency debate in the House of Commons on Monday night. "It has to stop."