Interest and Gambling

Using interest money to fix potholes and to pay off interest of a bond

Q: I wanted to find out about the following to questions regarding interest.

1. Is it permissible to hire out people with interest money to repair potholes which the government supposed to do and are not doing so. Would it affect the maslah if the person who gave the interest money to repair the roads is also using the roads and taking benefit from this interest money?

2.Can a person use interest money to pay off the interest of a bond?