Cement is too heavy.
To provide better intra city connectivity during the games, the Delhi government is constructing 24 new flyovers and six road-over-bridges for the 2010 Delhi Commonwealth Games
oramp deyuk
Yes they can last longer than wooden bridges. :)
3 FLYOVERS
There are many advantages of flyovers. For example, flyovers help to streamline the traffic control system by helping to reduce traffic congestion. With urban road development, flyovers assist in creating additional road space overhead.
Flyovers are purely aesthetic, just as fireworks or banners may be.
Cement bricks are made of Cement- it's in the name.
The military. All Nascar fans are big supporters of the Military,and we love the Flyovers
Portland cement is made of,CaoSiO2Al2O3Fe2O3MgOAlkaliesSO3
type 1
steel bridges are made out of steel OBVIOUSLY !!!
It also causes our roads, highways, and bridges to corrode and become weaker. This is a huge safety hazard not only for roads and highways, but also for bridges because if a bridge is weak, it will collapse. It costs a lot of money to keep replacing the roads, highways and bridges, and it comes out of our tax money.wanker wanker wanker hahaha lol