The bridge spans needed to just be functional, i.e. hold up a passing train. They were installed at a slight angle to the abutments so that the easement of the curves could be accommodated. First the bridge spans were glued to the abutments using Testors plastic cement. This did not provide enough strength, of course, because there wasn't much glue surface. However, that did provide me with the time to install the C-channels under the bridge spans. These did provide enough glue surface to provide plenty of support. From a side profile the C-channels look like embedded I-beams in the concrete of the abutments. The sides of the bridge spans and the C-channels were painted with a stainless steel color.
And here is the more-or-less completed project. The bridge didn't quite turn out as well as I had hoped, but it IS functional. I placed AMI Roadbed on the bridge spans and then the track. The track was ballasted as is done on some bridges in the real world. Detailed patching will need to be done some time in the future to completely hide the AMI Roadbed with more ballast.
Happy with the new trackplan for this area, I placed the AMI Roadbed.
I spent most of the month building the four turnouts I need for this section of the main line.