This is an audio guide for people taking a "tourism English" course in France.
Tower Bridge is still a busy crossing of the Thames. It is crossed by over 40 000 people (motorists, cyclists, and pedestrians) everyday. Road traffic has a speed restriction of 20 miles per hour (32 km / hour) and there is an 18 ton weight limit. River traffic is much less frequent than when the bridge was first opened, but the bascules are raised about 1 000 times a year.
In 2008, a local web developer created a Twitter feed to post live updates of the bridge’s opening and closing. So don’t hesitate to go on line to see it !