The bridge needed to allow access to the docks for large vessels. Hence an opening mechanism was required.
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Tower
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As part of the London OpenHouse, the actual bridge vestibule chambers were opened to a small number of vistors visitors. The original sign-up list was filled within hours of the publication of the London OpenHouse brochure. However, the brige personnel was kind enough to set up a special tour. |
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| London's ultimate landmark is the Tower Bridge. It was the first bridge across the Thames downstream of the old docks. | All bridges in London are funded by a trust fund and not owned by the city. There is no charge for ships to pass the bridge, even though they need to give 24 hours notice | . The bridge needed to allow access to the docks for large vessels. Hence an opening mechanism was required. |
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| The original hydraulic motor is still in the machine room below the pillar. It is fully operational and was only replaced to reduce maintenance cost. | The original drive shaft was disconnected and the original hydraulic motor was replaced by a new, compact hydraulic motor. All other original mechanics remain. | The accumulator stores water under pressure to supply enough water to raise the bridge fully. The pressure pumps are located next to the bridge. |