Thanks Charlie, wish I had room to string 2 to 3 of them together. I am doing layout l with input from Tom Snyder's layout. I have been leaning toward supports created for his bridge, but always looking for other options.
Understood and good luck with the design. I would say to make sure the trestles are substantial looking enough to support the bridge ends (not sure what that part of the bridge is called) with all the concrete work.
What ever you choose, I'm sure it will be fine as the bridge almost stand alone as a focal point on any layout.