Humber Bridge July 1981. With a centre span of and a total length of , the Humber Bridge was the longest single-span suspension bridge in the world for 17 years, until Japan's Akashi Kaikyō Bridge opened on 5 April 1998. The road-distance between Hull and Grimsby was reduced by nearly as a consequence of the bridge. The bridge's surface takes the form of a dual carriageway with a lower-level foot and cyclepath on both sides. There is a permanent speed limit on the full length of the bridge. Each tower consists of a pair of hollow vertical concrete columns, each tall and
Kalemouth Suspension Bridge its confluence with the Kale Water, near Eckford. There is another nearby bridge called the Kalemouth Bridge, which carries the A698 over the Kale Water. The bridge works on the principle of suspension, and uses chains with long iron links for the suspension cables. Iron rods are used for suspenders to connect the chain to the deck of the bridge, and additional suspenders have been added in the middle of the chain links. A red painted wooden truss supports the wooden deck, which is covered with a layer of asphalt. The four ashlar pylons at the ends of the bridge