Simplify the following text for a Grade 10 native English-speaking person.
Original: Each year , most of the trackside fencing , pedestrian overpasses , grandstands and other motorsport infrastructure are erected approximately a month prior to the Grand Prix weekend and removed within 6 weeks after the event .
Simplified: Each year , most of the trackside fencing , pedestrian overpasses , grandstands and other motorsport infrastructure must be erected for the race . This is done about one month before the Grand Prix weekend .