Heads up members! Please make sure you write this down. OOIDA's street address in Grain Valley, MO, has changed and is now officially:Owner-Operator Independent Drivers Association1 OOIDA Drive NW Grain Valley, MO 64029

We are still in the same location and have the same phone number (1-800-444-5791), but the old R.D. Mize address is no longer valid.