if you build an arch bridge it can hold more weight then anyother type of toothpick bridge and can hold about 20lbs (if made well) another good type of bridge is the truss bridge it is just as strong as the arch bridge but it has diffrent structures.
There are many forces acting on a truss bridge compression, tension, and torsion. The truss bridge uses equilateral triangles to spread out the stress of the load on these forces along the hold structure.
Simply put, a truss bridge is just a bridge built by trusses. Trusses are structural frames composed of triangular pieces/joints. So basically a truss bridge is just many triangular structural frames as a support for the bridge.
As far as i can tell there are 27 different types of truss bridges (i.e. Brown truss, Bowstring truss, Kingpost truss, Long truss, and Pratt truss). Hope this helps :D
The answer will depend on its design and the material that it is built from.
The Victoria Falls bridge is supported by many steel trusses
Zero
21,000,000
Put many straws together to make it stronger
The Sydney Harbour Bridge is not the largest bridge in the world. There are many longer bridges. However, it is the largest steel arch bridge in the world, but not the longest. It's arch stands 134 m above the waters of Sydney Harbour.
1. Suspension bridge2. Cable stayed bridge3. Arch bridge4. Stone masonry bridge5. skew slab bridge6. Void slab bridge7. Continous bridge8. Rigid frames9. Truss bridge10. Pre-stressed Bridge
To hold 150 pounds of air, a whole lot of them. To hold 150 pounds of water, around 34 of them. To hold 150 pounds of stones or lead, not many at all.