this is a knex bridge i built long ago. it's a little basic, but it still looks nice. i made instructions! :)
green (or red or grey): 320
blue ring: 100
Teachers! Did you use this instructable in your classroom?
Add a Teacher Note to share how you incorporated it into your lesson.
Step 1: Supports
this should support the road
Step 2: Towers
Step 3: Road
Step 4: Well Done
the bridge is finished! enjoy :)