All phases of the pipeline (except the last phase) were completed and operational when Biden shut it down.
Keystone Pipeline - Wikipedia
Biden didn't shut the 1st 3 phases down. Only the 4th which wasn't built yet. Did you even read your own source???
Phase 1 (complete)
Keystone 30 in (760 mm) pipeline (phase 1) near
Swanton, Nebraska (2009)
This 3,456-kilometre-long (2,147 mi) pipeline runs from
Hardisty, Alberta, to the junction at
Steele City, Nebraska, and on to the
Wood River Refinery in
Roxana, Illinois, and
Patoka Oil Terminal Hub (tank farm) north of
Patoka, Illinois.
[101] The Canadian section involves approximately 864 kilometres (537 mi) of pipeline converted from the Canadian Mainline natural gas pipeline and 373 kilometres (232 mi) of new pipeline, pump stations and terminal facilities at Hardisty, Alberta.
[102]
The United States section is 2,219 kilometres (1,379 mi) long.
[102] It runs through
Nemaha,
Brown and
Doniphan counties in
Kansas and
Buchanan,
Clinton,
Caldwell,
Montgomery,
Lincoln and
St. Charles counties in
Missouri, before entering
Madison County, Illinois.
[38] Phase 1 went online in June 2010.
[1]
Phase 2 (complete)
The
Keystone-Cushing pipeline phase connected the Keystone pipeline (phase 1) in
Steele City, Nebraska, south through Kansas to the oil hub and tank farm in
Cushing, Oklahoma, a distance of 468 kilometres (291 mi) long. It was constructed in 2010 and went online in February 2011.
[3]
Truck hauling 36 in (910 mm) pipe to build Keystone-Cushing pipeline (phase 2) southeast of
Peabody, Kansas (2010)
Phase 3a (complete)
The
Cushing MarketLink pipeline phase started at
Cushing, Oklahoma, where American-produced oil is added to the pipeline, then runs south 435 miles (700 km) to a delivery point near terminals in
Nederland, Texas, to serve refineries in the
Port Arthur, Texas, area. Keystone started pumping oil through this section in January 2014.
[4][5][103] Oil producers in the U.S. pushed for this phase so the glut of oil can be distributed out of the large oil tank farms and distribution center in Cushing.
Phase 3b (complete)
The
Houston Lateral pipeline phase is a 47-mile (76 km) pipeline to transport crude oil from the pipeline in
Liberty County, Texas, to refineries and terminal in the
Houston area. This phase was constructed 2013 to 2016 and went online in 2017.
[6]
Phase 4 (cancelled)