There’s only one working freight rail track through the recently purchased Union Pacific property, but there is room for another. In fact there’s room for a new line of track through much of Fremont as shown in the photo below.
When the city depressed Paseo Padre Parkway underneath the rail bridge, it and UP agreed to a deal. The city would build a single track bridge over Paseo Padre, but it would also put the infrastructure in place for a second track, which UP can build if it chooses.
This photo was sent to me by a reader: