A cable-stayed bridge has one or more towers (or pylons), from which cables support the bridge deck.
There are two major classes of cable-stayed bridges: harp and fan.
In the harp design, the cables are nearly parallel so that the height of their attachment to the tower is similar to the distance from the tower to their mounting on the deck.
In the fan design, the cables all connect to or pass over the top of the towers. The fan design is structurally superior with minimum moment applied to the towers but for practical reasons the modified fan is preferred especially where many cables are necessary. In the modified fan arrangement the cables terminate near to the top of the tower but are spaced from each other sufficiently to allow better termination, improved environmental protection, and good access to individual cables for maintenance.
The cable-stayed bridge is optimal for spans longer than cantilever bridges, and shorter than suspension bridges. This is the range where cantilever bridges would rapidly grow heavier if the span was lengthened, and suspension bridge cabling would not be more economical if the span was shortened.
The Newton Navarro Bridge, is one of the biggest cable-stayed bridge of Brazil located in the city of Natal, capital of the Brazilian state of Rio Grande do Norte. It connects North Zone and the cities of the north coast to the South Zone and other regions of the city crossing Potengi River.
The main purpose is to ease the usual heavy traffic in Igapó bridge and to improve access to the future Greater Natal International Airport and its adjacent areas, also increasing the flow of tourism in the north coast and improving access of the inhabitants of the North Zone to the downtown and main zones.
It is named upon Newton Navarro, an important local artist.