About five minutes.
5 minutes
90
About 4 minutes.
About 4 minutes
Just a few minutes.
about 5 minutesAbout 4 minutes
The construction started in 1886 and opened in 1894.
Tower Bridge first opened in 1894. The bridge is 801 feet in length.
The bridge opens for boats. The engineer in charge would open it.
Tower Bridge opens an average of two or three times per week.
Tower Bridge is a combined suspension and bascule bridge which allows it to open for the passage of boats with tall masts. Each of the bascules (which resemble a castle drawbridge) is 100 foot long - about 30 metres.
Tower Bridge
Tower Bridge is the only bridge in London that opens.
no it can only open 45 decrese