Great work, especially with card.
I’ve got a double track Riyal Albert Bridge, made from Balsa and plywood, laser cut for me as a kit by a guy in Cornwall. I did message him last Christmas about him cutting the parts for the access bridges like you’ve got, but I haven’t sent him the dimensions yet as I’ve had so much on this year. Seeing your model inspires me to get on with mine.
Cheers, Timmo