BISMARCK, N.D. (AP) — TransCanada Corp. is reassessing whether oil producers in North Dakota and Montana are still interested in shipping crude through its long-delayed Keystone XL pipeline now that they have other new options to ship their product, including the Dakota Access pipeline.

The Calgary-based company's announcement this month comes with the Keystone XL still needing approval of its proposed route through Nebraska and with the Dakota Access, which was designed to transport about half of North Dakota's oil production, expected to be fully operational by June.

TransCanada announced in...