0
The longest bridges in the world are viaducts or trestle bridges.
It is easier to design a high, elevated roadway by
directly supporting it with many towers or piers (as in a viaduct or trestle bridges).
It is more difficult to design an elevated roadway with a large unobstructed span (as in a suspension bridge or arch bridge).
However, the bridges with the longest unobstructed spans in the world are invariably suspension bridges, because ...
Wiki User
∙ 11y ago
Wiki User
∙ 14y agoBecause they help speed up the Long ******** of ******Traffic
Wiki User
∙ 13y agoSuspension bridges use steel ropes because steel is very strong and can hold under tension. xxx hope that helps xx
Wiki User
∙ 13y agobecause that is the strongest material?
Add your answer:
Earn +20 pts
What is the main difference between an arch bridge and a suspension bridge?
Arch bridges are in the shape of an upside down "U" with mainly steel beans, while supension bridges have one or two Major verticle beams with strong wire connecting to the bridge.
Who invented the steel wire cable that is used to build modern suspension bridges?
John Roebling
When was the first suspension bridge built?
This question is difficult to answer as "suspension bridge" is a very loose term. Ancient people from South America and the Himalayas have used rope suspension bridges to span chasms since ancient times and there are arguments about who first designed/built the first modern bridges. For information relating to these arguments see the related link below.
What is a major problem for suspension bridges?
Although suspension bridges are among the longest bridges, and most are well-built, the design does include features that make them more susceptible to failure. Rather than a rigidly-connected skeleton, a cable bridge is held in place by its own weight, which maintains a constant tension. The cables supporting the roadway are balanced, and if any fail, the change in weight can cause a complete collapse. Cables must be inspected regularly for corrosion, wear, or slippage. Shifts in the foundation of any bridge can cause it to fall, but because there are fewer supports in the cable bridge, any change will tend to have greater effect. High winds can cause structural failure of a poorly-designed bridge by causing swinging oscillations known as "aeroelastic flutter." This causes a twisting motion that can warp or crumble the bridge deck.
What was used before bridges were invented?
Boats.
Where is a suspension bridge used?
For a long spans mainly.
What is used to stabilize suspension bridges?
Cables .
Where are suspension bridges most commonly used?
i dont know but its strong
What matirial was used in early suspension bridges?
wood and hot metal
What is the main difference between an arch bridge and a suspension bridge?
Arch bridges are in the shape of an upside down "U" with mainly steel beans, while supension bridges have one or two Major verticle beams with strong wire connecting to the bridge.
When would a bridge crane be useful?
Cranes that are used for building bridges or other large structures are used because they can carry very large weights across very long spans and heights.
Steel is used for cables in suspension bridges because of its capacity for?
tension :D
. Steel is used for cables in suspension bridges because of its capacity for?
tension :D
What type of architecture is used to construct many bridges?
steel cable suspension
What are bridge towers?
Bridge towers are used in suspension bridges or cable stayed bridges. cables, what hold roadway, are fixed there.
What materials are used in modern bridges?
Steel is the most common, especially for suspension bridges. Concrete is used for lower bridges (and where little shifting will occur) because it is more resistant to the elements.
A advantage of a suspention bridge?
They can be used on fairly long span bridges compared to suspension bridges by using pylons in between. They have better stability against wind loads. They can be constructed in steps working on their own decks.
