What is the ruling on spending interest from bank profits on painting a building and repairing a road, and is it permissible to open an interest-bearing account for the same purpose?

The person who has acquired usurious gains is obligated to repent to Allah for this grave sin. Part of this repentance is to dispose of these gains by spending them on charitable causes, such as public interests (roads and hospitals). It is not permissible for him to benefit from them personally or for those whose maintenance is obligatory upon him. Based on this, it is not permissible to use them to paint the building, but it is permissible to use them to repair a public road near the house. It is not permissible to open an interest-bearing account to achieve a specific purpose, because the end does not justify the means.