N scale bridge mod

Modification of n scale bridge. I started with jeff_j3ffr3y's fantastic N scale bridge, but the way I was using it on my layout I needed to reinforce it. The original bridge deck was somewhat flexible, so I duplicated the depth so it was much more rigid and kept the original teeth pattern on the end so construction was still nice and easy. The double thickness also meant I had more surface area to bond the sections of the bridge together, so it's holding well.

The .stl file with the vertical bridge trusses is another modification for my layout. I merged the reinforced bridge deck with the vertical trusses and added another layer beneath for the whole length of the each truss, making it aesthetically pleasing, too. The .stl file included has all the pieces merged.

These are both modifications to jeff_j3ffr3y's original N scale Concrete and Steel Truss Bridge (https://www.thingiverse.com/thing:3905004), which is absolutely amazing on my layout. Thanks to jeff_j3ffr3y for a fa