Lot Next to Highway Great Location for Billboard

[Tim Steele]

Anyone with experience renting out space to billboard companies?

My family owns a nice lot, about 1 acre, along the major highway in my area (Southeast Iowa).

In the future, I plan to split the lot and build two new homes. In the meantime, I wondered about renting the space to a billboard company. I have now idea where to start. An advertising broker? are there key players in various regions? 

Any help is appreciated!