The usufructuary is responsible for ordinary maintenance and repairs for keeping the property subject to the usufruct in good order, whether the need for these repairs arises from accident or force majeure , the normal use of things, or his fault or neglect.
The naked owner is responsible for extraordinary repairs, unless they have become necessary as a result of the usufructuary's fault or neglect in which case the usufructuary is bound to make them at his cost.