they are
The I Street Bridge

Dimensions:
Length of largest span: 194.9 ft.
Total length: 854.0 ft.
Deck width: 30.0 ft.
Vertical clearance above deck: 14.8 ft.
Tower Bridge

Dimensions:
Length of largest span: 209.0 ft.
Total length: 737.9 ft.
Deck width: 51.8 ft.
Vertical clearance above deck: 14.0 ft.
Length 737'
California State Railway Museum

Dont know of any deminsions but here's the google maps stuff, there should be the veterans p42 with the heritage train there for scale

https://www.google.com/maps/@38.5849376 ... a=!3m1!1e3
These are vital to the route and need to be made, if anyone can make these thanks!