Oktoberfest to Close Two Blocks on 7th Avenue Tomorrow. Oktoberfest, presented by Sheets Forrest Draper Insurance, returns for the third year on Saturday, Sept. 21, 2024. It will feature 30 breweries from Iowa and surrounding areas sampling a wide variety of styles. Please be aware, on Saturday, Sept. 21, 7th Avenue will be closed between 10th and 12th Streets from 7 a.m.-5 p.m. for this event.