The GRAND PARADE is the only interstate St Patrick's Day Parade in the USA and is viewed by tens of thousands of people along the route from Rock Island, Illinois across the Mississippi River through Davenport, Iowa. A Mass at St. Mary's Church, Rock Island, IL will be celebrated at 10:00 am. The Saint Patricks Day parade will begin at 11:30 AM at the corner of 4th Ave and 23rd St in Rock Island and wind its way west thru downtown Rock Island following 4th Ave to 20th St to 3rd Ave to 17th St to 2nd Ave to the Centennial Bridge, where it crosses the Mississippi River to Gaines St. in Davenport and then north to 3rd St. and east on 3rd to Harrison St and then south on Harrison to conclusion at 2nd St.