Roads & Traffic Authority of NSW v Leichhardt Council

The High Court of Australia considered a dispute between the Roads and Traffic Authority of New South Wales (RTA) and Leichhardt Council concerning the RTA's liability for damage caused by a tree on council land to a road. The RTA sought to recover damages from the Council for the cost of repairing the road, which had been damaged by the roots of a large fig tree situated on land owned and managed by the Council. The RTA argued that the Council had breached its duty of care to maintain its land in a safe condition, which in turn affected the integrity of the adjacent road.

The central legal issue before the High Court was whether the Council owed a duty of care to the RTA in relation to the maintenance of the tree on its land, and if so, whether that duty had been breached, thereby causing the damage to the road. Specifically, the Court had to determine the scope of the Council's responsibility for the potential impact of its land management practices on public infrastructure, and whether the foreseeability of such damage established a causal link sufficient to found liability.

The High Court, in dismissing the RTA's appeal, held that the Council did not owe a duty of care to the RTA in the circumstances. The Court reasoned that the Council's duty of care in relation to its land extended to preventing foreseeable harm to persons and property in the vicinity of the land, but not to protecting the structural integrity of public roads from the natural growth of trees on its property. The principles applied focused on the established boundaries of negligence, particularly the requirement for a sufficiently proximate relationship between the parties and the foreseeability of the specific type of harm alleged. The Court found that the damage to the road was not a foreseeable consequence of the Council's management of the tree in a way that would give rise to a duty owed to the RTA.