42 metres above the River Thames, the walkways provide stunning views of the city and many famous London sites. With the aid of photographs and interactive kiosks, visitors to Tower Bridge Exhibition can gain a greater understanding of how life would have been when the idea of a new bridge was originally conceived.
Building the Walkways
The high level footway bridges were costly and difficult to construct. The engineer used them structurally as bracing, to stiffen the tops of the towers against the pull of the suspension chains. They were erected as a lattice box girder with the walkway inside. This enabled them to be [cantilevered|A cantilever is a section supported at one end, which can bear its own weight] outwards, piece by piece from the tops of the towers, and without scaffolding from below, for the whole of the semi-span of 115 feet (35.05 metres) till they met over the centre of the river, where a central section linked them together.
In 1910 the high level Walkways were closed to the public due to lack of use. People arriving on the bridge preferred to wait at street level for it to close rather then heading up the stairs carrying their heavy loads. In 1982, as part of the new Tower Bridge Exhibition, visitors to the bridge could once again enter the walkways, now fully covered, and experience the amazing panoramic views.