Thank you for the news, how do you find out about such things?
Hiked much of the old row in the late 1960's when it was interesting, before it became a bike trail. Back then you could find a lot of debris, like third rail insulators still mounted to rotted ties. Believe I still have one of the 3rd rail insulators, pilfered from the grade climbing the hill out of the valley near Pacific heading toward the east portal of the Jovita Canyon tunnel.
Satellite view
Car barn Kent, Wa - Hope it works
This site shows a map of the car barn and yard area in Kent.