Increase limits of Delegated Authority to District Engineers Re: Infrastructure Contract and Related Matters. Category: Department OrderSub Category: areas-responsibilities-authority-designationSeries: 1992No: 139File: DO_139_S1992.pdfDate: Wednesday, August 26, 1992Tags: Delegated Authority District Engineers Infrastructure Contract areas 139 Read more about Increase limits of Delegated Authority to District Engineers Re: Infrastructure Contract and Related Matters.