Verrazzano-Narrows Bridge anchorage on the Staten Island side contains a facility for heating cinders that are used to de-ice the bridge deck during winter. At the time of opening, the Verrazzano-Narrows Bridge was the longest suspension bridge in the world; its 4,260-foot center span, between the two suspension towers, was longer than the Golden Gate Bridge's center span. Despite being only slightly longer than the Golden Gate Bridge, the Verrazzano-Narrows Bridge could carry a 75% greater load than the former could. In 1981, the Verrazzano Bridge was surpassed by the Humber Bridge in England, which has a center span of , as
Punalur Suspension Bridge was also built to prevent wild animals from getting to the populated side, a bridge which shakes when some one gets on it was built, this shaking scared off the animals and they wouldn't cross the bridge. The bridge is connected to four wells. The iron rods of the bridge is connected to the clips, situated in the wells. Each well is about 100 feet deep and no one since knows the engineering behind the construction of this bridge. It still remains a mystery. A new concrete bridge was built near to the Punalur Suspension Bridge in 1972 due to