This map has a "Layers" icon in the upper right corner. When the cursor hovers over it a drop-down menu allows you to select base map layers and also which shuttle routes to display.
The "Shuttle Routes Zoom" panel allows you to focus the view on a route.
The "Downloads" panel provides files for the individual routes in the gpx format.
Maps are like milk: their information is perishable, and it is wise to check the date.
Click on the layer icon to download a track (.gpx) file :
Note: The download attribute is not supported in Edge version 12, IE, Safari 10 (and earlier), or Opera version 12 (and earlier).