OK, so its really only growing by one mile. ;>)
[
docs.stb.dot.gov]
"to permit WIR to lease from BNSF Railway Company ("BNSF")
approximately 1 mile of track, including (1) BNSF track 2309,
being the west leg of the "wye" beginning at the clearpoint of
BNSF track 2305 in Marshall (WA), Washington Yard, to and
including the turnout to BNSF.line segment 384 at MP 0.43, and
(2) BNSF line segment 384 from MP 0.43 to and including MP 1.00,
near Marshall." ..... "This lease will facilitate interchange and switching
between WIR and BNSF."