Two American visitors — including an 11-year-old boy — were injured after their bike collided with a wall on Somerset Bridge.A 52-year-old man and the boy, a passenger on a bike, were taken to the King Edward VII Memorial Hospital where they were treated for minor injuries before being discharged.A Police spokesman said the accident happened 7.40pm yesterday.“It appears that a rental cycle was being ridden over Somerset Bridge when the collision occurred with a nearby wall,” said the spokesman.