No, you shouldn't have the <br> element there, for two reasons:
- it's not valid HTML, and
- if you want some visual space there, use CSS (e.g. put some bottom padding on that LI.)
Remember, visual layout is the job of CSS, not HTML. As a rule, don't use HTML elements to get visual effects (except in rare cases mentioned above, such as in poetry or addreses).
Given your content, it's also worth asking yourself if an address is really a list. If not, don't use HTML that describes it as a list.