Highway 20 eastbound, East of Dyersville will be reduced to one lane for about one week due to a pavement patching project. Iowa DOT engineer, Hugh Holak says the routine project is a fast moving process, where crews replace broken concrete panels in the pavement. As the pavement gets older, this type of minor repair is performed to extend the life cycle of the roadway. The work should be complete early next week. Holak says crews then plan to work on Hwy 13 between Central City and Manchester.