On the Hot Springs Junction Ntrak module, the three main Ntrak lines known as Red, Yellow, and Blue have to cross a stream. I wanted to keep the the riverbed scene as visible as possible so I needed to be careful what types of bridges to use. I was also concerned that the track would be accessible for cleaning and as the tracks were only about 15 to 20 scale feet above the river there was not much clearance underneath.
What I decided on was to use three single track concrete trestles with a ballasted deck. I got inspiration from some parts I found in Green Max kit # 47-5. There was a set of trestle bents with 3 posts that were vertical.
In this photo notice I mention the use of 4 penny finishing nails. Holes are drilled through horizontal beam and the nails provide additional strength to the posts and beam connection.
Instead of using nails on this one I used brass rod to strengthen the connection between the posts and beam connection.