Moved to a downstairs apartment so came up with a new plan . There's sidings (runarounds) on both sides of the layout. Could have 2 people operating the layout, either one on each side or have one operator make up a train in yard, then that train to the switching side. Second person do same thing in yard first then to switching side. The 2 operators could pass each other on either siding. The bridge will be a plate girder like the LAJ one across the LA River, so not like one shown