Large Scale Central

Pratt Truss Bridge for Iron Island RR

Thanks Diesel Dude, Really like the plan and the execution of said plan. Did one milk crate equal the whole bridge, or did it take more crates?

Pete-

Thanks again.

I used two crates. The bridge is five feet long and double tracked. Each side of the milk crate yielded a one foot length of material for the bridge bottom.

The bottom of the milk crate also has a similar “girder” pattern, but the dimensions and design did not match the side pattern. So, I needed a second crate.

If you are building a shorter span or if you are doing a single track bridge, you could get away with less material- perhaps only one crate.

The material that I used for the simulated girders above the entrance and exit of the bridge came from a different type of plastic crate (not a milk crate). Unfortunately, I do not have a picture of that crate.

Let me know if you need anything else.

-Kevin.

Kevin , just curious, what is the clearances you decided on and the overall height of the bridge. Laying out for mine and I really like your porportions. I am going with 10" actual clearance to allow for double stack intermodals, and guessing about 13 " overall height from deck of bridge to top of the center section