HOUSTON-- TransCanada Corp. (TSX:TRP) has won approval to build part of an oil pipeline to refineries the Texas coast.

The U.S. Army Corps of Engineers says in a letter that the Calgary-based company can build the 185-kilometre portion of pipeline near Galveston.

The company still needs approval for two other sections of the 780-kilometre line between Cushing, Okla., and the Gulf Coast.

The Obama administration rejected Keystone XL project in its entirety earlier this year because it said more time was needed to find a new route through Nebraska to ease environmental concerns.

TransCanada is pursuing the southern leg of Keystone XL first as that part doesn't need a federal permit to proceed.

In the meantime, the U.S. State Department has begun a new review of the segment from the Canada-U.S. border to Steele City, Neb.