The file 'N Scale 100 Ft. Warren Truss Roadway Bridge…. 3D Printer Model' is (stl) file type, size is 1.3MB.
This is a N Scale Warren Truss roadway bridge. Much more info and build pictures on my site here ....
https://1fatgmc.com/RailRoad/3D-Printer-2/page-62.html
You can find other 3D printable parts for your layout here....
12_Side_A_-_Pt_1-1.stl | 1.3MB | |
14_Side_A_-_Pt_2-1.stl | 1010.5KB | |
16_Side_B_-_Pt_1-1.stl | 1.3MB | |
18_Side_B_-_Pt2_-1.stl | 1010.5KB | |
54_Bridge_Decking_South_End-1.stl | 13.6KB | |
56_Bridge_Decking_North_End-1.stl | 10.8KB | |
60_Top_Cross_Piece-2.stl | 115.3KB | |
65_Bottom_Cross_Piece-1.stl | 1.4KB | |
70_Top_X_Brace-2.stl | 174.9KB | |
80_Top_End_Brace-10.stl | 837.4KB | |
85_Roadway-Railing-7.stl | 79.5KB |