Directions to Downtown Development Authority Search | Advanced Search | New Members | Coupons and Discounts | All Categories Business & Professional Services >> Economic Development & Business Organizations Downtown Development Authority 933 Terrace StreetMuskegon, MI 49440 | map Ms. Contessa Alexander 231-724-3180 Get directions to: Downtown Development Authority, 933 Terrace Street, Muskegon MI Get directions from: Click to Print This Page If you would like to see your business here, contact us today to get listed!