Between 1967 and 1972. It was officially opened in 1973.
1967 until 1972
Tower Bridge is in London.
1886 to 1894
The current bridge was built between 1968 and 1973.
1886 to 1894
Eight years
About six years.
1886 to 1894
About 1 hour, arriving at either Victoria or London Bridge Stations
About 15 minutes.
Tower Bridge is a bascule bridge and is the only bridge in London which can open to allow tall ships to pass under it - although that doesn't happen very often now. It was officially opened for use by the public in 1894.
About 5 minutes, just walk across the bridge.