FORT COLLINS, Colo. — President Trump granted a key approval Thursday for a major new oil pipeline that would carry oil from Canada into the U.S. where it would be exported and refined.

The 3-foot-wide Bridger Pipeline Expansion would carry up to 550,000 barrels (87,400 cubic meters) of oil a day from the Canadian border with Montana down through eastern Montana and Wyoming, where it would link with another pipeline.

The project would require additional state and federal environmental approvals before construction, which company officials expect to start next year. Environmentalists hope to stop the project over worries that the pipeline could break and spill.

At peak volume, the 650-mile pipeline would move two-thirds as much oil as the better-known Keystone XL pipeline that got partially built before President Joe Biden, citing climate-change concerns, canceled its permit on the day he took office in 2021.

"Slightly different from the last administration. They wouldn't sign a pipeline deal. And we have pipelines going up," Trump said after signing the Bridger Pipeline Expansion cross-border approval.

Trump in his first term approved the Keystone XL project in 2020 over the concern of Native American tribes about possible spills and environmental groups about fossil fuels' contribution to climate change.

Biden's Keystone XL permit cancellation the following year frustrated Canadian officials, including Prime Minister Justin Trudeau, after Alberta invested more than $1 billion in the project.

Sometimes called "Keystone Light," the Bridger Pipeline Expansion would not cross any Native American reservations. More than 70% would be built within existing pipeline corridors and 80% on private land, Bridger Pipeline LLC said in a statement.

The Casper, Wyoming-based company operates more than 3,700 miles (5,950 kilometers) of gathering and transmission oil pipelines in the Williston Basin of North Dakota and Montana and the Powder River Basin of Wyoming.

A subsidiary of True Companies, Bridger Pipeline could avoid a reversal by a future administration if it's able to complete its project before Trump leaves office. It hopes to start construction in the fall of 2027 and finish it by late 2028 or early 2029, Bridger spokesperson Bill Salvin said.

Trump's term ends Jan. 20, 2029.

True Company subsidiaries have been responsible for several major pipeline accidents including more than 50,000 gallons (240,000 liters) of crude that spilled into the Yellowstone River and fouled a Montana city's drinking water supply in 2015, a 45,000-gallon diesel spill in Wyoming in 2022 and a 2016 spill that released more than 600,000 gallons (2.7 million liters) of crude in North Dakota, contaminating the Little Missouri River and a tributary.

Subsidiaries of True agreed to pay a $12.5 million civil penalty to settle a government lawsuit over the North Dakota and Montana spills.

Salvin said the company has developed an AI-driven leak detection system that allows it to be notified more quickly when there are problems. It also plans to bore 30 to 40 feet (9 to 12 meters) beneath major rivers including the Yellowstone and Missouri to reduce the chances of an accident. The 2015 accident occurred on a line that was constructed in a shallow trench at the bottom of the river.

"We designed the pipeline with integrity and safety in mind. We have emergency response plans should something happen where oil happens to get out of the line, which is fairly rare," Salvin said.

Environmental groups opposed to the project include the Montana Environmental Information Center and WildEarth Guardians.

"The biggest concern we see right now is the concern inherent in all pipeline projects which is the risk of spills," said attorney Jenny Harbine with the environmental law firm Earthjustice. "Pipelines rupture and leak. It's just a fact of pipelines."