AUSTIN, Minn. — Interstate 90 motorists will have a weekend-long detour June 26-29 while construction crews demolish the Highway 218 north/14th Street Northwest bridge in Austin, according to the Minnesota Department of Transportation. Demolition crews will be removing the remaining bridge at Highway 218 north near Riverland Community College. Crews removed the adjacent bridge in April and have been building the replacement bridge at that site. …