Links
SketchUp Free Version

https://www.sketchup.com/download


Step 1 - Choose a Product:  SELECT Educational use
Step 2 - Please complete the required info and select the FREE version SketchUp Make
Step 3 - Explore and have fun, don't forget me when your rich and famous.


West Point Bridge Builder

https://www.cesdb.com/west-point-bridge-designer.html