Hey! Just wanted to make you aware that a lot of the track you tagged as "abandoned" is still in service at the Peterson Industrial Depot. There have been a lot of improvements made at the depot over the last few years that has rehabilitated a lot of the existing track. NAIP provides the most up-to-date representation of the depot. Esri is a close second.

A point of clarification I'll offer (and one that I wish was better understood in the OSM world), the difference between "disused" and "abandoned" is actually quite distinct. Anytime infrastructure is visible (i.e. Draper south of current terminus of TRAX), I tag this as "disused" because there is the potential to be used again at some future date. I only tag infrastructure as abandoned if a formal request has been filed and accepted by the Surface Transportation Board or in the case of non common carrier rail (like Peterson), the rail and raised grade have been removed completely and/or development has occurred over it. Hope this helps!