Tower Bridge bridge's upper walkways. The pedestrian walkways are above the river at high tide. The main bridge deck carries two lanes of road traffic between two low-level pedestrian walkways across both suspension spans and the opening bascule section of the bridge, with the walkways separated from the roadway by fences. The roadway passes through each of the two towers, whereas the low-level walkways pass around the outside of the towers. One of the chimneys on the bridge, which are often mistaken for lamp posts, connects up to an old fireplace in a guardroom of the Tower of London. It is long-disused.
Tower Bridge behind the Olympic rings. The sound travelled backwards and forwards along the walkway, echoing the structure of the bridge. Following the Olympics, the rings were removed from Tower Bridge and replaced by the emblem of the Paralympic Games for the 2012 Summer Paralympics. Tower Bridge was closed to all road traffic for almost three months in late 2016 (1 October to 30 December). This was to allow structural maintenance work to take place. The work included: During this time the bridge was still open to water borne traffic as required by Act of Parliament. The bridge was open to pedestrians