You can't go over it. You can't go under it. You could go around it. But you really ought to go through the 39th annual Ada Harvest and Herb Festival, today, Saturday, September 20 from 9:00 a.m.-4:00 p.m. The festival is a program of the Ada Area Chamber of Commerce and will fill Main St. from Highland to University, as well as a portion of Buckeye Ave.