On Friday, April 23, the Massachusetts State Police just announced a second DUI roadblock for this coming weekend. This sobriety checkpoint will take place at various hours beginning Saturday, April 24, 2010 and continuing into Sunday, April 25, 2010. While the previously-announced roadblock will take place somewhere in Middlesex County, this recently-announced one will be in Essex County. Essex County is made up of cities and towns north of Boston, from Amesbury and Danvers to Gloucester and Marblehead.