business law question

Bamford Pty Ltd owns an area where they have a car park for employees. There is a small bridge over a drain on the land that employees use to walk or ride bikes to a nearby park often during their lunch break. Jonny lives nearby and occasionally uses the bridge and car park as a short cut to his friend's place even though a sign says "private property". The management of Bamford Pty Ltd know people use it occasionally as a short cut. Jonny was riding his bike across the bridge when a loose plank caused him to fall off his bike. He suffered a head wound and concussion. He was not wearing a helmet at the time. a) Does Bamford Pty Ltd owe a duty of care to Jonny and if so why? b) If Bamford Pty Ltd does owe a duty of care have they breached their duty? Are there any defences to reduce Jonny's claim? d) Are there any similar cases that assist your arguments? Bamford Pty Ltd owns an area where they have a car park for employees. There is a small bridge over a drain on the land that employees use to walk or ride bikes to a nearby park often during their lunch break. Jonny lives nearby and occasionally uses the bridge and car park as a short cut to his friend's place even though a sign says "private property". The management of Bamford Pty Ltd know people use it occasionally as a short cut. Jonny was riding his bike across the bridge when a loose plank caused him to fall off his bike. He suffered a head wound and concussion. He was not wearing a helmet at the time. a) Does Bamford Pty Ltd owe a duty of care to Jonny and if so why? b) If Bamford Pty Ltd does owe a duty of care have they breached their duty? Are there any defences to reduce Jonny's claim? d) Are there any similar cases that assist your arguments