level 1:

I did a plane bridge with two sticks holding it up.

level 2:
I did the same thing like on level one with the first bridge but the second bridge fell a little but it worked.






level 3:

I did a slanted bridge with a two pieces holding it up.

level 4

I did a through Pratt truss type of bridge on both of the but the 2nd one is held by two crossed sticks.

level 5

 On the 1st bridge I used 11 sticks to hold it up and I used a v in the squares. The 2nd one I did a slanted bridge with 8 sticks holding it up.

level 5

The 3rd one I used different shapes like triangles and rectangles.





I used these real bridges

I used arch, beam and truss

If the golden gate bridge is 8999 ft  in length then that is about 200 buses.

If the Le Havre, France  bridge is  

2800 feet in length then that is about 28 blue whales.

If the Kaikyo Suspension Bridge is 153937 inches long in length then that is 25700 Twiggy Winkles.