Scores of BNSF Railway locomotives are parked in a rail yard near Interstate 235 just north of NW 23 in Oklahoma City. The locomotives have been there for several weeks, and are expected to remain there until rail traffic improves, the company says. [Photo By Steve Gooch, The Oklahoman]

BNSF Railway has parked dozens of its locomotives at a storage yard north of downtown Oklahoma City over the past several weeks as slowing traffic demand has left the units idle.

The engines parked along the east side of Interstate 235 north of NW 23 are from BNSF trains throughout the country, company spokesman Joe Sloan said.

"We have a reduced amount of freight traffic now, and that storage point was available," he said.

Sloan said there is no timeline as to when the locomotives are expected back on the rails.