Dave Vollmer:Terry, that's an option. Not so much the mirror (seems kinda cliche to me) but the placement of the overpass. But if you've ever railfanned from the real Belle Vista Dr bridge or I81 bridge at Enola, the thrill is enjoying train action from both directions. Of course, I have the bridge on the wrong side of the diesel house for Enola, but it's "proto-lanced."
I'd say you've captured the flavor quite well...

And I see you used an older style bridge to work with your steam era ops... even though the interstate bridge didn't appear until long after the last fires were dropped. Good compromise.
Lee