Performance of Michigan's concrete barriers.

676689135PDFTech ReportR-1498Barriers (Roads)Bridge railingsPortland cement concreteDeteriorationMichiganMichigan. Dept. of Transportation. Construction and Technology DivisionStaton, John F.Knauff, JasonMichigan. Dept. of Transportation. Construction and Technology DivisionMichigan. State Transportation CommissionNTL-HIGHWAY/ROAD TRANSPORTATION-Pavement Management and PerformanceNTL-HIGHWAY/ROAD TRANSPORTATION-Bridges and StructuresUS Transportation CollectionModifications to design standards, material specifications, construction methods, and roadwaymaintenance practices are believed to be major contributing causes for the observed prematuredeterioration of Michigan\u2019s Portland cement concrete bridge railings and barriers.This study documents the history of Michigan\u2019s barrier design configurations, provides asynopsis of typical modes of deterioration, and finally, provides recommendations intended toaddress improvements to the long-term performance of concrete barriers exposed to Michigan\u2019sharsh environments